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\f
m. monfpasub - fpa subprocesses drivers
b.i30 w.
i0=81 03 25, i1=12 00 00
; if newtime (i0,i1) > oldtime (a133,a134) then oldtime:=newtime;
c.i0-a133
c.i0-a133-1, a133=i0, a134=i1, z.
c.i1-a134-1, a134=i1, z.
z.
i10=i0, i20=i1
i15=i10/100000 , i10=i10-i15*100000 , i25=i20/100000 , i20=i20-i25*100000
i14=i10/10000 , i10=i10-i14*10000 , i24=i20/10000 , i20=i20-i24*10000
i13=i10/1000 , i10=i10-i13*1000 , i23=i20/1000 , i20=i20-i23*1000
i12=i10/100 , i10=i10-i12*100 , i22=i20/100 , i20=i20-i22*100
i11=i10/10 , i10=i10-i11*10 , i21=i20/10 , i20=i20-i21*10
i2: <: date :>
(:i15+48:)<16+(:i14+48:)<8+46
(:i13+48:)<16+(:i12+48:)<8+46
(:i11+48:)<16+(:i10+48:)<8+32
(:i25+48:)<16+(:i24+48:)<8+46
(:i23+48:)<16+(:i22+48:)<8+46
(:i21+48:)<16+(:i20+48:)<8+ 0
i3: al. w0 i2. ; write date:
rs w0 x2+0 ; first free:=start(text);
al w2 0 ;
jl x3 ; return to slang(status ok);
jl. i3. ;
e.
j.
;
; fpa-subproc
;
\f
; fpa-subproc common procedures
; eli, 7.8.1975
; start of subprocess-code
;*************************
w.
; table of reservations
;
; the following table is used to determine, whether the sender of a
; message has to have reserved the device or just has to be a user
; of the device.
;
; the table holds one word for each kind of subprocesses. bit(i)=1
; means, that reservation is needed for operation=i, otherwise just user is needed.
a0= 1<23
u0= 0 ; first subkind used
u1=k-u0
; subkind 0: general sequential device
0 ;
; subkind 2: not used
0 ;
; subkind 4: area processes
; note, that areaprocesses are checked at normal entry
0 ;
; subkind 6: disc
a0>5 ; output needs reservation
; subkind 8: typewriter
0 ; reservation never needed
; subkind 10: paper tape reader
-1 ; reservation always needed
; subkind 12: paper tape punch
-1 ; reservation always needed
; subkind 14: line printer
-1 ; reservation always needed
; subkind 16: card reader
-1 ; reservation always needed
; subkind 18: magnetic tape
-1 ; reservation always needed
; subkind 20: plotter
-1 ; reservation always needed
; subkind 22: discette
-1 ; reservation always needed
; subkind 24: character level i/o
-1 ; reservation always needed
\f
; fpa-subproc common procedures
; eli, 16.2.1976
;u2: ; see after u21.
;u3: ; - - -
\f
; fpa-subproc common procedures
; eli, 4.11.1975
; procedure check and link operation
;
; checks, that the sender of the message is a user or reserver of the
; device as defined by the reservation table of the corresponding
; subkind.
;
; for messages with operation code 3 or 5 (input or output) the field
; <updated first> in the message is initialized according to <first address> in
; the message and the addresses in the message are checked.
;
; if user or reservation is ok, the message is linked to the queue of
; the subproc.
;
; note: contrary to the standard procedure 'link operation' return is
; always made, even if other messages exist in the queue.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 undefined
; w3 link undefined
b. i10, j10
w.
u4: rs. w3 j0. ; check and link operation: save link
bl w3 x1+p10 ; w3:= subkind(subproc)
rl. w0 x3+u1. ; w0:= reservation mask(subkind)
rl w2 b18 ; w2:= current message
bz w3 x2+8 ; w3:= operation(message)
rl w1 x2+6 ; w1:= sender(message)
ls w0 x3 ; if reservation mask(bit(operation))=1 then
sh w0 -1 ;
am g15-g14 ; check reservation else
jl w3 g14 ; check user
; access rights ok
; w1 still holds address of internal process
bz w0 x2+8 ; if operation(mes)= input or output then
se w0 3 ;
sn w0 5 ; begin
jl. i0. ;
jl. i1. ;
i0: dl w0 x2+12 ; make first and last address in message even
la w0 g50 ;
la w3 g50 ;
sl w3 (x1+a17) ; if first(mes)<first(internal) or
sl w0 (x1+a18) ; last(mes)>=top(internal) or
jl g5 ;
sh w0 x3-2 ; first(mes)>last(mes) then
jl g5 ; goto result 3
ds w0 x2+12 ;
rs w3 x2+22 ; updated first(mes):= first(mes)
; end
; link message to message queue of subproc
i1: am (b19) ; w1:= addr. of message queue of subproc
al w1 +a54 ;
jl w3 d6 ; link(w1=head,w2=elem)
c.p101 b.f1 w. ;*****test48*****
rs. w3 f0. ;*
jl. w3 f4. ;*
48 ;*
f0: 0 ;*
jl. f1. ;*
al w0 x2 ;*
al w1 x2+22 ;*
jl. w3 f5. ;*
f1: ;*
e.z. ;*****test48*****
; return
rl w1 b19 ; restore subproc address
jl. (j0.) ;
j0: 0 ; saved return
e. ; end of check and link operation
\f
; fpa-subproc common procedures
; eli, 11.2.1976
; procedure get and deliver result
;
; returns an answer with a result as defined in the result-field of mainproc
; in the following way:
;
; result4000:= result(mainproc)+1
; deliver result(result4000)
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 undefined
; w3 link undefined
b. i10, j10
w.
u5: ; get and deliver result:
am (x1+a50) ; if function(mainproc(subproc))=
bz w0 +p81 ; answer message with data then
se w0 v55+(:1<0:); begin
jl. i0. ; copy answer content to words g20, g21, ...
rl w2 b18 ; w2:= message
rl w0 x2+8 ; copy status
rs w0 g20 ;
dl w1 x2+12 ; copy rest of answer
ds w1 g22 ;
dl w1 x2+16 ;
ds w1 g24 ;
rl w1 b19 ; end
i0: al w0 1 ; result4000:= result(mainproc(subproc))+1
am (x1+a50) ;
ba w0 +p82 ;
c.p101 b.f1 w. ;*****test49*****
rs. w3 f0. ;
jl. w3 f4. ;
49 ;
f0: 0 ;
jl. f1. ;
rl w1 g20 ;
ds w1 x3+2 ;
dl w1 g22 ;
ds w1 x3+6 ;
dl w1 g24 ;
ds w1 x3+10 ;
al w0 x3 ;
al w1 x3+10 ;
jl. w3 f5. ;
f1: ;
e.z. ;*****test49*****
jl g19 ; goto deliver result(result4000)
; note: link unchanged.
e. ; end of get and deliver result
\f
; fpa-subproc common procedures
; eli, 7.8.1975
; procedure prepare answer
;
; prepares the variables
; g20 <status>
; g21 <bytes>
; g22 <chars>
; for sending of an answer
;
; <status> is taken from the status-field of the mainproc
; <bytes> and <chars> are calculated by the fields <first address> and
; <updated first> in the message buffer and by the field <size> in
; mainproc.
;
; the separate entry, prepare after stop, initially clears the <size> and <status> fields
; of mainproc. it may be used, when the sender is stopped thus returning
; an answer corresponding to the message only.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 message undefined
; w3 link undefined
b. i10, j10
w.
u6: rl w1 x1+a50 ; prepare after stop:
al w0 0 ; result(mainproc):= status(mainproc):=
rs w0 x1+p83 ; size(mainproc):= 0
rs w0 x1+p84 ;
rl w1 b19 ; restore current subproc
u7: rs. w3 j0. ; prepare answer:
rl w3 x1+a50 ; main:= mainproc(subproc)
rl w0 x3+p83 ;
ls w0 12 ;
rs w0 g20 ;
rl w0 x2+22 ; chars:=
ws w0 x2+10 ; (updated first(mess)-first(mess))/2*3
rl w2 0 ;
ls w2 -1 ;
wa w2 0 ;
wa w2 x3+p84 ; chars:= chars+size(main)
rs w2 g22 ; save chars
al w1 0 ;
wd. w2 j1. ; bytes:=
se w1 0 ; if chars mod 3=0 then chars/3*2 else
al w2 x2+1 ; chars/3*2 +2
ls w2 1 ;
rs w2 g21 ; save bytes
; restore w1 to subproc and return
rl w1 b19 ; w1:= current subproc
jl. (j0.) ;
j0: 0 ; saved return
j1: 3 ; division constant
e. ; end of prepare answer
\f
; fpa-subproc common procedures
; eli, 8.8.1975
; procedure current message address
;
; returns the content of the message address entry corresponding
; to current bufno.
;
; call return
; w0
; w1 subproc unchanged
; w2 even entry content
; w3 link unchanged
b. i10, j10
w.
u8: bl w2 x1+p17 ; current message entry:
am x2 ;
am x2 ; w2:= even mes.adr(current fubno*2)
rl w2 x1+p19 ;
la w2 g50 ;
jl x3 ; return
e. ; end of current message address
\f
; fpa-subproc common procedures
; eli, 8.8.1975
; procedure current message entry
;
; returns the absolute address of the message address entry
; corresponding to current bufno.
;
; call return
; w0
; w1 subproc unchanged
; w2 absolute address of entry
; w3 link unchanged
b.i10, j10
w.
u9: bl w2 x1+p17 ; current message entry:
am x2 ;
am x2 ; w2:= entry address(current bufno*2)
al w2 x1+p19 ;
jl x3 ; return
e. ; end of current message entry
\f
; fpa-subproc common procedures
; eli, 8.8.1975
; procedure increase message entry
;
; increases the field current bufno to point to the next entry,
; modulo the system constant max number of buffers.
;
; call return
; w0 new bufferno
; w1 subproc unchanged
; w2 unchanged
; w3 link unchanged
b. i10, j10
w.
u10: ; increase message entry:
bl w0 x1+p17 ; current bufno(subproc):=
ba. w0 1 ; current bufno(subproc) + 1
sl w0 v0 ; modulo max bufferno
al w0 0 ;
hs w0 x1+p17 ;
jl x3 ; return
e.
\f
; fpa-subproc common procedures
; eli, 8.8.1975
; procedure clear message entry
;
; the entry in the message address table corresponding to bufno in
; the receiver-field of mainproc is cleared. the field free bufs in
; the subproc is increased by one.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2
; w3 link undefined
b. i10, j10
w.
u11: rs. w3 j0. ; clear message entry: save link
am (x1+a50) ;
bl w3 +p88 ;
al w0 0 ;
am x3 ;
am x3 ; message addr.(bufno(mainproc)*2):= 0
rs w0 x1+p19 ;
al w3 1 ; free bufs(subproc):=
ba w3 x1+p16 ; free bufs(subproc)+1
hs w3 x1+p16 ;
;
jl. (j0.) ; return
j0: 0 ; saved link
e. ; end of clear message entry
\f
; fpa-subproc common procedures
; eli, 20.1.1976
; procedure find first message
;
; if <current message> is nonzero, this value is returned.
; otherwise the procedure continues through
; <find first unprocessed message>
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 message or 0
; w3 link unchanged
b. i10, j10
w.
u12: ; find first message:
rl w2 x1+p13 ; if current message(subproc)<>0 then
se w2 0 ; goto check regret
jl. i3. ;
; continue through u22
\f
; fpa-subproc common procedures
; eli, 12.8.1976
; procedure find first unprocessed message
;
; scans the messagequeue of the calling subproc and returns
; the address of the first unprocessed messagebuffer.
; 0 is returned, if no buffer is found.
;
; if a message selected has been regretted (or the sender removed)
; the message is returned and the queue scanned again.
;
; note: a processed messagebuffer has receiver(mes)<0.
; the procedure does not change the receiver-field
; of the message.
; the monitor-word <current message> is set to the buffer found.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 message or 0
; w3 link undefined
u22: rs. w3 j0. ; save link
; scan message queue
i0: rl w2 x1+a54 ; scan:
jl. i2. ; mes:= first message(subproc)
i1: rl w0 x2+4 ; while receiver(mes)<0
sl w0 0 ; and mes<>last message(subproc) do
jl. i4. ;
rl w2 x2+0 ; mes:= next(mes)
i2: se w2 x1+a54 ;
jl. i1. ;
; no message pending in queue
al w2 0 ;
jl. (j0.) ; return
; w2 points to message. check regretted
i3: rs. w3 j0. ; check regret: save link
i4: rs w2 b18 ; current message(monitor):= mes
rl w0 x2+6 ;
sl w0 0 ; if sender(mes)>0 then
jl. (j0.) ; return
al w0 0 ;
sn w2 (x1+p13) ;
rs w0 x1+p13 ;
al. w3 i0. ; no operation(mes)
jl g26 ; goto scan
j0: 0 ;
e. ; end of find first message
\f
; fpa-subproc common procedures
; eli, 8.8.1975
; procedure save and reserve message
;
; stores a message buffer address in the message entry described by
; current entry and in the current message field of the subproc.
; the message is reserved by setting the receiver-field negative,
; if it is not already so.
;
; call return
; w0
; w1 subproc unchanged
; w2 message unchanged
; w3 link undefined
b. i10, j10
w.
u13: ds. w3 j1. ; save and reserve message: save message and link
jl. w3 u9. ; w2:= current entry address
rx. w2 j0. ; save entry:= w2
rs. w2 (j0.) ; mess addr(entry):= message
rs w2 x1+p13 ; current message(subproc):= message
al w3 -1 ; free buffers(subproc):=
ba w3 x1+p16 ; free buffers(subproc)-1
hs w3 x1+p16 ;
ac w3 (x2+4) ; if receiver(mes)>0 then
sl w3 0 ; begin
jl. (j1.) ;
rs w3 x2+4 ; receiver(mes):= -receiver(mes)
am (b1) ; decrease(buffer claim(current internal proc))
bz w3 +a19 ;
al w3 x3-1 ;
am (b1) ;
hs w3 +a19 ; end
;
jl. (j1.) ; return
j0: 0 ; saved message
j1: 0 ; saved link
e. ; end of save and reserve message
\f
; fpa-subproc common procedures
; eli, 8.8.1975
; procedure convert to 8-bit
;
; converts the number in w0, representing a number of 12-bit characters,
; to the corresponding number of 8-bit characters
;
; call return
; w0 number in 12-bits
; number in 8-bits
; w1
; w2
; w3 link undefined
b. i10, j10
w.
u14: rs. w3 j0. ; convert to 8-bit: save link
rl w3 0 ; size8:=
ls w3 -1 ; size12*3/2
wa w0 6 ;
jl. (j0.) ; return
j0: 0 ; saved link
e. ; end of convert to 8-bit
\f
; fpa-subproc common procedures
; eli, 15.1.1976
; procedure convert to 12-bit
;
; converts the number in w0, representing a number of 8-bit characters,
; to the corresponding number of 12-bit characters.
;
; call return
; w0 number in 8-bit
; number in 12-bit
; w1
; w2
; w3 link undefined
b. i10, j10
w.
u15: rs. w3 j0. ; convert to 12-bit: save link
al w3 0 ; prepare division
wd. w0 j1. ; size12:= size8/3*2
se w3 0 ; if size8 mod 3<>0 then
ba. w0 1 ; size12:= size12+2
ls w0 1 ;
jl. (j0.) ; return
j0: 0 ; saved link
j1: 3 ; 8-bit characters per word
e. ; end of convert to 12-bit
\f
; fpa-subproc common procedures
; eli, 19.8.1975
; procedure prepare addresses
;
; initializes the fields <first addr>, <data size> and <size>
; in the mainproc sender table corresponding to the next part
; of a message to be transmitted.
; if a block of size 0 is encountered, the data-bit in the func-
; tion-field is cleared.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 message unchanged
; w3 link undefined
b. i10, j10
w.
u16: rs. w3 j0. ; prepare addresses: save link
al w3 2 ; saved size:=
wa w3 x2+12 ; last addr(mes)-updated first(mes)
ws w3 x2+22 ; +2
rl w0 6 ; size:= saved size
; test for maximum size exceeded
sl w0 (x1+p18) ; if size>maxsize(subproc) then
rl w0 x1+p18 ; size:= maxsize(subproc)
sl. w0 (j1.) ; if size>maxsize(datanet) then
rl. w0 j1. ; size:= maxsize(datanet)
se w0 (6) ; if size= saved size then
jl. i0. ; comment: last block of message
al w3 0 ; current message(subproc):= 0
rs w3 x1+p13 ;
; set first, last and size in mainproc
i0: rl w1 x1+a50 ; main:= mainproc(subproc)
rl w3 x2+22 ; first:= first(main):= updated first(mes)
rs w3 x1+p65 ;
se w0 0 ; if size=0 then
jl. i1. ;
bl w3 x1+p61 ; databit(function(main)):= 0
la w3 g50 ;
hs w3 x1+p61 ;
i1: jl. w3 u14. ; header size(main):= data size(main):=
rs w0 x1+p64 ; convert to 8-bit(size)
rs w0 x1+p66 ;
rs w0 x2+20 ; expected size(mes):= size(main)
; return
rl w1 b19 ; restore subproc addr
jl. (j0.) ;
j0: 0 ; saved link
j1: v2 ; datanet max buffer size
e. ; end of prepare addresses
\f
; fpa-subproc common procedures
; eli, 17.9.1975
; procedure test and decrease stop count
;
; upon entry w2 holds a number of an entry in the message table.
; if the entry points to a message and the stop count of
; the sender of the corresponding message has been increased (i.e.
; message entry is odd) then the stop count of the sender is decreased
; and the flag in the message table cleared.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 messageno undefined
; w3 link undefined
b. i10, j10
w.
u18: ; test and decrease stop count:
am x2 ; mes:= message table(messageno*2)
am x2 ;
al w2 x1+p19 ;
rl w0 x2 ;
sl w0 (b8+4) ; if not possible messageaddress or
so w0 2.1 ; not stop count increased(mes) then
jl x3 ; return
rs. w3 j0. ; save return
la w0 g50 ; stop count increased(mes):= false
rs w0 x2 ;
rx w0 b18 ; current message(monitor):= mes
rs. w0 j1. ; save old current message(monitor)
jl w3 g32 ; decrease stop count
rl w1 b19 ; restore subproc
rl. w2 j1. ; restore current message(monitor)
rs w2 b18 ;
jl. (j0.) ; return
j0: 0 ; saved link
j1: 0 ; saved current message(monitor)
e. ; end of test and decrease stop count
\f
; fpa-subproc common procedures
; eli, 17.9.1975
; procedure clear subproc message queue
;
; called from hostproc, when a transmission line error is detected or a
; master clear received.
;
; all messages in the queue of the subproc (processed as well as unprocessed)
; are returned with result=4 (receiver malfunction)
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 undefined
; w3 link undefined
b. i10, j10
w.
u19: ; clear subproc message queue:
v100= u19 ;
rs. w3 j0. ; save link
rl w2 b18 ;
rs. w2 j2. ; save curr mess;
al w2 0 ; for w2:= all entries in message table do
c.p101 b.f1 w. ;******test50*****
rs. w3 f0. ;
jl. w3 f4. ;
50 ;
f0: 0 ;
jl. f1. ;
al w0 x1 ; testrecord:=
al w1 x1+p19+16 ; process description;
jl. w3 f5. ;
f1: ;
e.z. ;*****test50*****
i2: rs. w2 j1. ;
jl. w3 u18. ; test and decrease stopcount(w2)
rl. w2 j1. ;
al w0 0 ;
am x2 ; if message table(w2)<>0 then
am x2 ; begin
rx w0 x1+p19 ;
sn w0 0 ;
jl. i3. ;
al w3 1 ; free bufs(subproc):= free bufs(subproc)+1
ba w3 x1+p16 ;
hs w3 x1+p16 ;
i3: al w2 x2+1 ;
rl w0 x1+a10 ; if kind(sub)=hostproc kind then
sn w0 p111 ; max entries:=v3
am v3-v0 ; max entries:=v0;
se w2 v0 ;
jl. i2. ; end
jl. i1. ;
; scan message queue and return answers
i0: rs w2 b18 ; for mes:= first message(subproc)
al w0 4 ; while mes<>last message(subproc) do
jl w3 g19 ;
rl w1 b19 ; deliver result(4)
i1: rl w2 x1+a54 ;
se w2 x1+a54 ;
jl. i0. ;
al w0 0 ; internal state(subproc):= 0
rs w0 x1+p12 ;
rs w0 x1+p13 ; current message(subproc):= 0
hs w0 x1+p17 ; current bufno(subproc):= 0
rl. w2 j2. ;
rs w2 b18 ; restore curr mess;
jl. (j0.) ; return
j0: 0 ; saved link
j1: 0 ; saved messageno
j2: 0 ; saved curr mess
e. ; end of clear subproc message queue
\f
; fpa-subproc common procedures
; eli, 15.1.1976
; procedure test answer attention
;
; called when the subproc is ready for sending a header.
;
; if the <answer attention> flag is set in the statefield of the subproc,
; mainproc will be initiated to transmit the answer. <bufno> from the
; attention message received has previously been saved in the rightmost 8
; bits of <state>.
; if an attention answer is pending the procedure will return to mainproc.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 unchanged
; w3 link undefined
b. i10, j10
w.
u20: ; test answer attention:
rl w0 x1+p12 ; if answer attention(state(subproc))=0 then
so w0 v71 ; return
jl x3 ;
;
rl w3 x1+a50 ; main:= mainproc(subproc)
c. p103-1
al w0 8 ; addresscode(main):= ' no check '
hs w0 x3+p72 ;
z.
jl. w3 u25. ; set linkparams
al w0 v59 ; function(main):= answer attention
hs w0 x3+p61 ;
rl w0 x1+p12 ; bufno(main):= rightmost 8 bits
la w0 g53 ; (state(subproc))
hs w0 x3+p68 ;
;
jl (b101) ; goto mainproc return
e. ; end of test answer attention
\f
; fpa-subproc common procedures
; eli, 11.2.1976
; procedure test and increase stop count
;
; increases the stop count of the sender of a message, if it has
; not already been increased. the message must be present in the
; message table and the address in the table must bee odd if stop
; count has been increased.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 message see below
; w3 link undefined
;
; if stop count could not bee increased, because the sender has been
; stopped then return will be made to <link> and the message has
; been returned (w2 is undefined).
;
; otherwise return to <link+2> (w2 is unchanged).
b. i10, j10
w.
u21: ; test and increase stop count:
rs. w3 j0. ; save link
al w3 x1+p19 ; search message table for message
jl. i1. ;
i0: al w3 x3+2 ;
i1: rl w0 x3 ; w0:= even message(message table)
la w0 g50 ;
se w0 x2 ;
jl. i0. ;
; w3 points to entry. w0 holds even message address
lo w0 g63 ; set odd value in message table
rx w0 x3 ;
sz w0 2.1 ; if stop count already increased then
jl. i2. ; goto ok-return
; examine state of sender before increase
rs. w3 j1. ; save entry
jl w3 g34 ; exam sender
jl. i3. ; stopped: goto stop-return
jl w3 g31 ; ok: increase stop count
; return to <link+2>
i2: rl. w3 j0. ; ok-return:
jl x3+2 ;
; stop count could not be increased. deliver answer
i3: al w0 0 ; message entry:= 0
rs w0 x1+p12 ; state(subproc):= ready;
rs. w0 (j1.) ; if mes=current message(subproc) then
sn w2 (x1+p13) ; current message(subproc):= 0
rs w0 x1+p13 ;
al w3 1 ;
ba w3 x1+p16 ;
hs w3 x1+p16 ; free buffers:= free buffers+1
c.p101 b.f1 w. ;*****test51*****
rs. w3 f0. ;*
jl. w3 f4. ;*
51 ;*
f0: 0 ;*
jl. f1. ;*
al w0 x1+p11 ;*
al w1 x1+p19+14 ;*
jl. w3 f5. ;*
f1: ;*
e.z. ;*****test51*****
jl. w3 u6. ; prepare answer after stop
jl w3 g18 ; deliver result(1)
jl. (j0.) ; goto <link>
j0: 0 ; saved link
j1: 0 ; saved entry
e. ; end of test and increase stop count
\f
; fpa-subproc common procedures
; eli, 8.6.1977
; procedure set linkparams
;
; copies the fields devhost linkno, jobhost linkno,
; devhost host-id, devhost net-id and devhost
; home-reg to the mainproc parameters.
;
; also copies the bufferno of the link and sets the
; monitor address code to 'no check'.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 unchanged
; w3 link mainproc
b. i10, j10
w.
u25: ; set linkparams:
rs. w3 j0. ; save link
rl w3 x1+a50 ; main:= mainproc(subproc)
bz w0 x1+p11 ; receiver linkno(main):=
hs w0 x3+p69 ; devhost linkno(subproc)
bz w0 x1+p9 ; sender linkno(main):=
hs w0 x3+p78 ; jobhost linkno(subproc)
bz w0 x1+p7 ; receiver net-id(main):=
hs w0 x3+p301 ; devhost net-id(subproc)
bz w0 x1+p6 ; receiver home-reg(main):=
hs w0 x3+p302 ; devhost home-reg(subproc)
rl w0 x1+p5 ; receiver host-id(main):=
rs w0 x3+p303 ; devhost host-id(subproc)
bz w0 x1+p17 ; bufno(main):= bufno(subproc)
hs w0 x3+p68 ;
;
jl. (j0.) ; goto return
j0: 0 ; saved link
e. ; end of set linkparams
\f
; fpa-subproc common procedures
; eli, 8.6.1977
; procedure testlink
;
; tests, that the mainproc parameters sender linkno, sender host-id
; and sender net-id are equal to the parameters devhost linkno,
; devhost host-id and devhost net-id in the subproc.
;
; if not equal, return will be made to link+0, otherwise
; to link+2.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 mainproc
; w3 link unchanged
b. i10, j10
w.
u23: ; testlink:
rl w2 x1+a50 ; main:= mainproc(subproc)
bl w0 x2+p98 ; if sender linkno(main)<>
bs w0 x1+p11 ; devhost linkno(subproc) then
se w0 0 ; goto link+0
jl x3+0 ;
rl w0 x2+p323 ; if sender host-id(main)<>
se w0 (x1+p5) ; devhost host-id(subproc) then
jl x3+0 ; goto link+0
bl w0 x2+p321 ; if sender net-id(main)<>
bs w0 x1+p7 ; devhost net-id(subproc) then
; se w0 0 ; goto link+0
; jl x3+0 ;
jl x3+2 ; goto link+2
e. ; end of testlink
\f
; fpa-subproc common procedures
; eli, 8.6.1977
; procedure reject
;
; sets the internal status of mainproc to 'reject'
; and jumps to testmore
;
; call no return
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
u24: ; reject:
al w0 p163 ; internal status(mainproc(subproc):=
am (x1+a50) ; reject
hs w0 +p80 ;
jl. u2. ; goto testmore
e. ; end of reject
\f
; fpa-subproc common procedures
; eli, 7.8.1975
; testmore
;
; entered, when the subproc-state should be tested for more messages to
; process.
;
; if the state of the subproc is free, and more messages to process exist
; the subproc is linked to the mainproc.
;
; return is made through the common return.
;
; upon entry:
;
; w0
; w1
; w2
; w3
; b19 subproc
b.i10, j10
w.
u2: ; testmore:
rl w1 b19 ; get current subproc
c.p101 b.f1 w. ;*****test52*****
rs. w3 f0. ;
jl. w3 f4. ;
52 ;
f0: 0 ;
jl. f1. ;
al w0 x1 ; testrecord:=
al w1 x1+p19+16 ; process description;
jl. w3 f5. ;
f1: ;
e.z. ;*****test52*****
rl w0 x1+p14 ; if in mainproc queue then
se w0 x1+p14 ;
jl (b101) ; return
; test answers to transmit
rl w0 x1+p12 ;
c.p101 b.f1 w. ;*****test53*****
rs. w3 f0. ;*
jl. w3 f4. ;*
53 ;*
f0: 0 ;*
jl. f1. ;*
al w0 x3 ;*
al w1 x3-2 ;*
jl. w3 f5. ;*
f1: ;*
e.z. ;*****test53*****
sz w0 v71 ; if answer att<>0 then
jl. i0. ; goto link subproc
; test message entry free and number of buffers free
jl. w3 u8. ; if mess.addr.(cur.entry)<>0
bl w0 x1+p16 ;
c.p101 b.f1 w. ;*****test54*****
rs. w3 f0. ;*
jl. w3 f4. ;*
54 ;*
f0: 0 ;*
jl. f1. ;*
al w0 x3 ;*
al w1 x3-2 ;*
jl. w3 f5. ;*
f1: ;*
e.z. ;*****test54*****
sn w2 0 ; or bufs free=0 then
sn w0 0 ;
jl (b101) ; goto return
; test for a current message or more messages to process
rl w0 x1+p12 ;
sz w0 v70 ; if blocked(subproc) then
jl (b101) ; goto mainproc return
sz w0 v72 ; if pending messages(subproc)<>0 then
jl. i0. ; goto link subproc
jl. w3 u12. ; if next pending=0 then
c.p101 b.f1 w. ;*****test55*****
rs. w3 f0. ;*
jl. w3 f4. ;*
55 ;*
f0: 0 ;*
jl. f1. ;*
al w0 x3 ;*
al w1 x3-2 ;*
jl. w3 f5. ;*
f1: ;*
e.z. ;*****test55*****
sn w2 0 ;
jl (b101) ; goto return
; a message or answer is pending
; link subproc to the corresponding mainproc
;
; note: the buffer is not reserved for the subproc and the bufferaddress
; not saved until processing actually starts.
i0: ; link subproc:
al w2 x1+p14 ; elem:= queue elem(subproc)
am (x1+a50) ; head:= queue head(mainproc(subproc))
al w1 +p14 ;
jl w3 d6 ; link(head,elem)
; mainproc will later activate the subproc
jl (b101) ; goto return
e. ; end of testmore
\f
; fpa-subproc common procedures
; eli, 7.8.1975
; procedure no block
;
; signals a 'nothing to do' status to mainproc,
; clears busy and returns to mainproc
;
; call no return
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
u3: al w0 p164 ; no block:
am (x1+a50) ; internal state(mainproc):=
hs w0 +p60 ; 'nothing to do' (i.e. regretted)
jl. u2. ; goto testmore
e. ; end of no block
\f
; fpa-subproc stepping stones
; eli, 77.06.14
c. p101
jl. f4. ;
f4=k-2
jl. f5. ;
f5=k-2
jl. f6. ;
f6=k-2
z.
jl. u4. ;
u4=k-2
jl. u8. ;
u8=k-2
jl. u12. ;
u12=k-2
jl. u15. ;
u15=k-2
\f
; fpa-subproc common procedures
; eli, 11.2.1976
; procedure prepare transfer
;
; saves the message address for the subproc and then
; prepares transmission of a header (and maybe a datablock)
; depending on the operation-field in the message.
; finally the standard parameters in mainproc corresponding to
; the subproc are set.
;
; note, that only the operations <input>, <output> or <message>
; may be handled.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 message unchanged
; w3 link undefined
b. i10, j10
w.
u30: ; prepare transfer:
rs. w3 j0. ; save link
jl. w3 u13. ; save and reserve message
al. w3 i0. ; link:= after prepare
; switch to procedure, corresponding to operation
bl w0 x2+8 ; op:= operation(mes)
sn w0 3 ; if op=input then
jl. u31. ; goto prepare input
sn w0 5 ; if op=output then
jl. u32. ; goto prepare output
jl. u33. ; goto prepare message
; return is made to here from all subroutine calls.
; set rest of parameters
i0: rl w3 x1+a50 ; main:= mainproc(subproc)
bz w0 x1+a56+1 ; s:= initialize state(subproc)
se w0 1 ; state(main):= if s=1 then s else 0
al w0 0 ;
hs w0 x3+p62 ;
al w0 0 ; initialize state(subproc):=0
hs w0 x1+a56+1 ;
bz w0 x2+9 ; mode(main):= mode(mes)
rs w0 x3+p63 ;
jl. w3 u25. ; set linkparams
rl w0 x1+p13 ; if current message(subproc)<>0 then
sn w0 0 ; blocked(subproc):=true;
jl. i1. ;
al w0 v70 ;
lo w0 x1+p12 ;
rs w0 x1+p12 ;
i1: ;
c.p101 b.f1 w. ;*****test56*****
rs. w3 f0. ;*
jl. w3 f4. ;*
56 ;*
f0: 0 ;*
jl. f1. ;*
al w0 x2 ;*
al w1 x2+22 ;*
jl. w3 f5. ;*
f1: ;*
e.z. ;*****test56*****
; return
jl. (j0.) ;
j0: 0 ; saved link
e. ; end of prepare transfer
\f
; fpa-subproc common procedures
; eli, 19.8.1975
; procedure prepare input
;
; prepares transmission of a header corresponding to an input-
; message. the <size>-field of the header shows how many characters
; should be input.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 message unchanged
; w3 link undefined
b. i10, j10
w.
u31: ; prepare input:
rs. w3 j0. ; save link
jl. w3 u16. ; prepare addresses
rl w3 x1+a50 ; main:= mainproc(subproc)
al w0 v50 ; function(main):= input
hs w0 x3+p61 ;
al w0 0 ; data size(main):= 0
rs w0 x3+p66 ;
jl. (j0.) ; goto link
j0: 0 ; saved link
e. ; end of prepare input
\f
; fpa-subproc common procedures
; eli, 11.2.1976
; procedure prepare output
;
; prepares the transmission of a header corresponding to an
; output-message. the addresses in the sender table of mainproc
; are initialized corresponding to a datablock, which is to
; be transmitted following the header.
; if the sender of the message is stopped, an answer is
; generated showing the number of bytes and characters output
; until now.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 message unchanged
; w3 link undefined
b. i10, j10
w.
u32: rs. w3 j0. ; prepare output: save link
; examine state of sender
jl. w3 u21. ; test and increase stop count
jl. u3. ; stopped: goto no block
; sender still running
rl w3 x1+a50 ; main:= main(subproc)
al w0 v52+(:1<0:); function(main):=
hs w0 x3+p61 ; output+databit
c. p103-1
al w0 0 ; addresscode(main):=
hs w0 x3+p72 ; sender area
rs w2 x3+p71 ; messagebuf(main):= message;
z.
jl. w3 u16. ; prepare addresses
jl. (j0.) ; goto link
j0: 0 ; saved link
e. ; end of prepare output
\f
; fpa-subproc common procedures
; eli, 19.8.1975
; procedure prepare message
;
; prepares transmission of a header , followed by the content of
; the messagebuffer (only the user part is transmitted).
; the field <current message> in the subproc is cleared.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 message unchanged
; w3 link mainproc
b. i10, j10
w.
u33: rs. w3 j0. ; prepare message: save link
al w0 0 ; current message(subproc):= 0
rs w0 x1+p13 ;
rl w3 x1+a50 ; main:= mainproc(subproc)
al w0 x2+8 ; first(main):= first user addr(mes)
rs w0 x3+p65 ;
al w0 (:22-8+2:)/2*3; header size(main):= data size(main):=
rs w0 x3+p64 ; size of user part(mes)
rs w0 x3+p66 ;
al w0 v54+(:1<0:); function(mainproc):= message+databit
hs w0 x3+p61 ;
c. p103-1
al w0 8 ;
hs w0 x3+p72 ;
z.
; return
jl. (j0.) ;
j0: 0 ; saved link
e. ; end of prepare message
\f
; fpa-subproc common procedures
; eli, 11.2.1976
; procedure test header and data transmitted
;
; tests the result of transmission of a header and (maybe)
; a datablock.
; if the <stop count increased>-flag is set, the stop count
; of the sender of current message is decreased.
; if a transmission error has occured, the message is returned
; with result=4 (receiver malfunction) and the <current message>-
; field cleared. return will then be made to <link+0>.
;
; if no error has occured, <current bufno> is
; increased and return made to <link+2>.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 undefined
; w3 link undefined
b. i10, j10
w.
u40: ; test header and data transmitted:
rs. w3 j0. ; save link
rl w3 x1+a50 ; if function type(main(subproc))=answer then
bz w0 x3+p61 ;
sz w0 2.10 ;
jl. i1. ; goto after answer attention
jl. w3 u8. ; <current buffer>:= w2:=
rs w2 b18 ; message
bl w2 x1+p17 ; get messageno
sz w0 2.1 ; if databit(function)=1 then
jl. w3 u18. ; test and decrease stop count
rl w2 b18 ;
; test transmission state
am (x1+a50) ; if internal state(mainproc(subproc))<>0 then
bl w0 +p60 ; begin
sn w0 0 ;
jl. i0. ;
; transmission trouble
sl w2 (b8+4) ; if message addr>=first message then
jl. +4 ; begin
jl. i2. ;
;
se w0 p161 ; if state<>1 then
al w2 0 ; mes:= 0
rs w2 x1+p13 ; comment: state=1 after wait;
bl w2 x1+p17 ; get messageno;
jl. w3 u18. ; test and decrease stopcount;
rl w2 x1+p13 ; mes:= current message(subproc);
al w0 4 ; current message(subproc):= mes
sn w2 0 ; if mes=0 then
jl w3 g19 ; deliver result(4)
i2: al w0 -1-v70 ; end
la w0 x1+p12 ; blocked(subproc):= false
rs w0 x1+p12 ;
c.p101 b. f1 w. ;*****test57*****
rs. w3 f0. ;*
jl. w3 f4. ;*
57 ;*
f0: 0 ;*
jl. f1. ;*
rl w2 b18 ;*
al w0 x2 ;*
al w1 x2+22 ;*
jl. w3 f5. ;*
f1: ;*
e.z. ;*****test57*****
al w0 0 ;
jl. w3 u9. ; message addr(current entry):= 0
rs w0 x2 ;
al w0 1 ; increase(free buffers(subproc))
ba w0 x1+p16 ;
hs w0 x1+p16 ;
jl. (j0.) ; goto link+0
; end
; transmission ok.
i0: ;
c.p101 b.f1 w. ;*****test58*****
rs. w3 f0. ;*
jl. w3 f4. ;*
58 ;*
f0: 0 ;*
jl. f1. ;*
rs w2 x3 ;*
rl w2 x1+p13 ;*
rs w2 x3+2 ;*
al w0 x3 ;*
al w1 x3+2 ;*
jl. w3 f5. ;*
f1: ;*
e.z. ;*****test58*****
jl. w3 u10. ; increase(current entry(subproc))
; return
jl. i3. ; goto link+2
; answer attention has been transmitted
i1: bz w3 x3+p60 ; after answer attention:
c.p101 b.f1 w. ;*****test59*****
rs. w3 f0. ;*
jl. w3 f4. ;*
59 ;*
f0: 0 ;*
jl. f1. ;*
rs w0 x3 ;*
al w0 x3 ;*
al w1 x3 ;*
jl. w3 f5. ;*
f1: ;*
e.z. ;*****test59*****
al w0 -1-v71 ; if internal state(main)=0 then
la w0 x1+p12 ;
sn w3 0 ;
rs w0 x1+p12 ; answer attention flag(subproc):= false
i3: rl. w3 j0. ; goto link+2
jl x3+2 ;
j0: 0 ; saved link
e. ; end of test header and data transmitted
\f
; fpa-subproc common procedures
; eli, 15.1.1976
; procedure test answer header
;
; called when a header, which is going to be followed by a datablock has
; been received.
; in the current version only answers to previously transmitted messages
; may be handled.
; functions may be <answer input> or <answer message>.
; the bufno in the answer is used to find the message table entry.
; depending on the value in the entry, the following is performed:
;
; message entry:
;
; 0 the message has been returned due to line errors. a reject
; status is returned on the communication line. return
; will be made to testmore.
; impossible message address: signals a special function for the
; subproc. return to <link+2>.
; normal message address: procedure corresponding to function is
; activated. if the datablock can be received return is
; made to mainproc. otherwise a skip-status is signalled
; and return made to <link>.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 undefined
; w3 link undefined
b.i10, j10
w.
u50: ; test header:
rs. w3 j0. ; save link
jl. w3 u23. ; testlink
jl. u24. ; error: goto reject
rl. w3 j0. ; restore link
al w0 p160 ;
hs w0 x2+p80 ; skip(main):= false
bz w0 x2+p81 ; func:= function(main)
bz w2 x2+p88 ; mes:= even message table(bufno(main))
am x2 ;
am x2 ;
rl w2 x1+p19 ;
c.p101 b.f1 w. ;*****test60*****
rs. w3 f0. ;*
jl. w3 f4. ;*
60 ;*
f0: 0 ;*
jl. f1. ;*
al w0 x2 ;*
al w1 x2+22 ;*
jl. w3 f5. ;*
f1: ;*
e.z. ;*****test60*****
la w2 g50 ;
sl w2 (b8+4) ; if mes<first message then
jl. i0. ; begin
sn w2 0 ; if mes=0 then
jl. u24. ; goto reject
c.p101 b.f1 w. ;*****test61*****
rs. w3 f0. ;
jl. w3 f4. ;*
61 ;*
f0: 0 ;*
jl. f1. ;*
al w0 x1+p19 ;*
al w1 x1+p19+14 ;*
jl. w3 f5. ;*
f1: ;*
e.z. ;*****test61*****
jl x3+2 ; goto <link+2>
; end
i0: rs w2 b18 ; current message(monitor):= mes
am (x1+a50) ; if local function(rec)=
bz w3 +p99 ; rejected packet then
se w3 3 ; begin comment: deliver answer malfunction;
jl. i1. ;
am (x1+a50) ; w2:= bufno(rec)
bz w2 +p88 ;
jl. w3 u18. ; test and decrease stopcount
jl. w3 u11. ; clear message entry
jl w3 g4 ; deliver result(4)
al w0 p162 ; internal status(main):= skip
am (x1+a50) ;
hs w0 +p80 ;
jl. u2. ; goto testmore
i1: rl. w3 j0. ; end
; switch to action
sn w0 v51+(:1<0:); if function= <answer input with data> then
jl. u51. ; goto test answer input
jl. u53. ; goto test answer message
j0: 0 ; saved link
e. ; end of test answer header
\f
; fpa-subproc common procedures
; eli, 11.2.1976
; procedure test answer input header
;
; called, when a header with function=<answer input with data> has been
; received.
; the state of the receiving process
; is checked. if it is still running, the mainproc parameters
; are initialized and the procedure returns to mainproc.
;
; if the receiver is stopped an answer is returned and a skip-status signalled
; to mainproc.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 message undefined
; w3 link undefined
b. i10, j10
w.
u51: ; test answer input header:
rs. w3 j0. ; save link
; examine state of receiving process
jl. w3 u21. ; test and increase stop count
jl. i0. ; stopped: goto skip
; sender still running
rl w3 x1+a50 ; main:= mainproc(subproc)
rl w0 x2+22 ; first(main):= updated first(mes)
rs w0 x3+p85 ;
rl w0 x3+p84 ;
rs w0 x3+p86 ; data size(main):= header size(main)
c. p103-1
al w0 0 ; addres code(main):=
hs w0 x3+p92 ; sender area
rs w2 x3+p91 ; messagebuf(main):= message
z.
; return to mainproc, which will then receive the datablock
jl (b101) ; goto mainproc return
; receiver of databuffer stopped
i0: al w0 p162 ; skip: signal skip-status to mainproc
am (x1+a50) ;
hs w0 +p80 ;
al w0 0 ;
rs w0 x1+p12 ; state(proc):=0;
; return
jl. (j0.) ;
j0: 0 ; saved link
e. ; end of test answer input header
\f
; fpa-subproc common procedures
; eli, 15.1.1976
; procedure test answer message header
;
; called when a header with function=<answer message with data> has been
; received.
; the parameters in mainproc are initiated to receive the answer.
; return will always be made to mainproc.
;
; note, that it is not necessary to check the running status
; of the receiver, as the datablock is received directly
; in the messagebuffer area in the monitor.
;
; call no return
; w0
; w1 subproc
; w2 message
; w3
b. i10, j10
w.
u53: ; test answer message header:
rl w3 x1+a50 ; main:= mainproc(subproc)
al w0 x2+8 ; first(main):= first user word(mes)
rs w0 x3+p85 ;
al w0 (:22-8+2:)/2*3; data size(main):=
rs w0 x3+p86 ; size of user part(mes)
al w0 8 ; address code(main):= dirty
hs w0 x3+p92 ;
c. p103-1
al w0 0 ;
rs w0 x3+p91 ;
z.
jl (b101) ; return to mainproc
e. ; end of test answer message header
\f
; fpa-subproc common procedures
; eli, 11.2.1976
; procedure test answer data received
;
; a header without a datablock, or the datablock following a header has
; been received.
; if stop count has been increased (answer input) it is decreased.
;
; if the function field of the header corresponds to a message received
; (attention) return will be made to <link+2>.
;
; if the message table of the entry corresponding to the bufno in the
; answer does not describe a message (value to small) return will be made
; to <link+4>. in this case w2 will hold the content of the message table entry.
;
; otherwise the procedure, corresponding to the mainproc <function>-
; field is activated and return made to <link>.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 undefined (see above for return to <link+4>
; w3 link undefined
b. i10, j10
w.
u60: ; test answer data received:
rl w2 x1+a50 ; if function(mainproc(subproc))=attention then
bz w0 x2+p81 ;
sn w0 v58 ;
jl. u64. ; goto attention received.
; note: link unchanged. will return to <link+2>
rs. w3 j0. ; save link
sz w0 2.1 ; if no data then
jl. i2. ; begin
jl. w3 u23. ; testlink
jl. u24. ; error: goto reject
; end
i2: bz w2 x2+p88 ; mes:= even message addr(bufno(mainproc(subproc)))
am x2 ;
am x2 ;
rl w3 x1+p19 ;
la w3 g50 ;
sn w3 0 ; if mes=0 then
jl. u24. ; goto reject
rs w3 b18 ; current message(monitor):= mes
jl. w3 u18. ; test and decrease stopcount(w2=messageno)
rl w2 b18 ; restore message
jl. w3 u11. ; clear message entry
al w0 -1-v70 ; blocked(subproc):=false;
la w0 x1+p12 ;
rs w0 x1+p12 ;
sl w2 (b8+4) ; if mes<first message buffer then
jl. i0. ;
rl. w3 j0. ; goto <link+4>
jl x3+4 ;
; switch to action
i0: rl w3 x1+a50 ;
bz w0 x3+p99 ; if local function(rec)=
se w0 3 ; rejected packet then
jl. i1. ; begin
al w0 4 ;
jl w3 g19 ; deliver result(4)
jl. u2. ; goto testmore
i1: ; end
bz w0 x3+p81 ; w0:= function(mainproc(subproc))
la w0 g50 ; remove databit
rl. w3 j0. ; link:= saved link
sn w0 v51 ; if function=<answer input> then
jl. u61. ; goto answer input data received
sn w0 v53 ; if function=<answer output> then
jl. u62. ; goto test answer output header
jl. u63. ; goto test answer message data
j0: 0 ; saved link
e. ; end of test answer data received
\f
; fpa-subproc common procedures
; eli, 15.1.1976
; procedure answer input data received
;
; called, when the datablock following a header with <function>=
; <answer input (with or without data)> has been received.
;
; if the message is not current message, if a result- or status error
; is detected or if less than wanted is input, an answer with result=1
; is generated. otherwise the next block may be input.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 message unchanged
; w3 link undefined
b. i10, j10
w.
u61: ; answer input data received:
rs. w3 j0. ; save link
se w2 (x1+p13) ; if mes=current message(subproc) then
jl. i1. ; begin
rl w3 x1+a50 ; main:= mainproc(subproc)
rl w0 x3+p84 ; if size(main)=expected size(mes)
bl w3 x3+p82 ; and
am (x1+a50) ;
wa w3 +p83 ;
sn w3 0 ;
se w0 (x2+20) ; result(main)=status(main)=0 then
jl. i0. ; begin
jl. w3 u15. ; updated first(mes):=
wa w0 x2+22 ; updated first(mes)+ convert to 12-bit(header size(main))
rs w0 x2+22 ;
jl. (j0.) ; goto return
; end result ok
; after some error in current message
i0: al w0 0 ; current message(subproc):= 0
rs w0 x1+p13 ; end current message
; not current message
; else
i1: jl. w3 u7. ; prepare answer
rl. w3 j0. ; link:= saved link
jl. u5. ; goto get and deliver result
j0: 0 ; saved link
e. ; end of answer input data received
\f
; fpa-subproc common procedures
; eli, 15.1.1976
; procedure test answer output
;
; test the parameters in a header corresponding to function
; =answer output.
; if the following conditions:
;
; -the corresponding message is <current message>
; -the result is ok (=0)
; -the status is ok (=0)
; -the whole block has been output
; a transfer of next part is prepared.
;
; otherwise an answer is generated
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 message undefined
; w3 link undefined
b. i10,j10
w.
u62: ; test answer output header:
rs. w3 j0. ; save link
se w2 (x1+p13) ; if mes=current message(subproc) then
jl. i1. ; begin
rl w3 x1+a50 ; main:= mainproc(subproc)
rl w0 x3+p84 ; if size(main)=expected size(mes)
bl w3 x3+p82 ; and
am (x1+a50) ;
wa w3 +p83 ;
c.p101 b.f1 w. ;*****test62*****
rs. w3 f0. ;*
jl. w3 f4. ;*
62 ;*
f0: 0 ;*
jl. f1. ;*
rs w0 x3 ;*
rs w1 x3+2 ;*
rs w2 x3+4 ;*
rl. w0 f0. ;*
rs w0 x3+6 ;*
al w0 x3 ;*
al w1 x3+6 ;*
jl. w3 f5. ;*
f1: ;*
e.z. ;*****test62*****
sn w3 0 ;
se w0 (x2+20) ; result(main)=status(main)=0 then
jl. i0. ; begin
jl. w3 u15. ; updated first(mes):=
wa w0 x2+22 ; updated first(mes)+convert to 12-bit(size(main)
rs w0 x2+22 ;
jl. (j0.) ; goto return
; end result ok
; after an error in current message
i0: al w3 0 ; current message(subproc):= 0
rs w3 x1+p13 ; end current message
; not current message
i1: ;
c.p101 b.f1 w. ;*****test63*****
rs. w3 f0. ;*
jl. w3 f4. ;*
63 ;*
f0: 0 ;*
jl. f1. ;*
al w0 x2 ;*
al w1 x2+22 ;*
jl. w3 f5. ;*
f1: ;*
e.z. ;*****test63*****
jl. w3 u7. ; prepare answer
jl. w3 u5. ; get and deliver result
jl. (j0.) ; goto return
j0: 0 ; saved link
e. ; end of test answer output header
\f
; fpa-subproc common procedures
; eli, 15.1.1976
; procedure answer message data received
;
; the datablock holding the answer of a message has been received.
;
; the message is returned as an answer, with result and status as
; defined in the preceding header. the other fields in the answer
; are taken from the datablock (if any).
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 message unchanged
; w3 link undefined
b. i10, j10
w.
u63: am (x1+a50) ; answer message data received: status(mess):=
rl w0 +p83 ;
ls w0 4 ; status(mon):= status(mes):=
sz. w0 (j0.) ; status(main)<12+
ba. w0 1 ; if stopped bit then 1<8
ls w0 8 ;
rs w0 g20 ;
rs w0 x2+8 ;
al w0 0 ;
rs w0 g21 ; bytes:= chars:= 0
rs w0 g22 ;
hs w0 x2+9 ;
; note: link unchanged
jl. u5. ; goto get and deliver result
j0: (:1<12:)<4 ; stopped bit in main status<4
e. ; end of answer message data received
\f
; fpa-subproc common procedures
; eli, 15.1.1976
; procedure attention received
;
; a header with function equal to a message type (i.e. attention) has
; been received.
; the answer attention-flag is set and the bufferno saved in the
; state field of the subproc.
;
; return will be made to <link+2>.
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 undefined
; w3 link undefined
b. i10, j10
w.
u64: ; attention received:
al w3 x3+2 ; save link+2
rs. w3 j0. ;
jl. w3 u23. ; testlink
jl. u24. ; error: goto reject
al w0 v71 ; w0:= answer attention flag+bufferno(main)
bz w2 x2+p88 ;
la w2 g53 ; keep only last 8 bits of bufno
lo w0 4 ;
lo w0 x1+p12 ; save in state(subproc)
rs w0 x1+p12 ;
jl. (j0.) ; goto link+2
j0: 0 ; saved link+2
e. ; end of attention received
; stepping stones:
jl. u14. , u14=k-2
\f
; fpa-subproc standard types
; eli, 16.12.1975
b. q20, s10
w.
; this code handles standard sequential devices with no special
; actions, such as:
;
; paper tape reader
; paper tape punch
; line printer
; card reader
; etc.
m. standard links
; entry point table:
h100: ; general sequential device
h110: ; paper tape reader
h112: ; paper tape punch
h114: ; line printer
h116: ; card reader
h120: ; plotter:
q0 ; after send message
q1 ; before header transmit
q2 ; after header transmit
q3 ; after header received
q4 ; after data received
q5 ; after creation
; no structure of private part of process description required
\f
; fpa-subproc standard types
; eli, 4.11.1975
; after send message
;
; a new message has been received. check that user- or reservation
; status is ok and link message to queue of subproc.
; if the subproc is not busy, then link it to mainproc.
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q0: ; after send message:
jl. w3 u4. ; check and link operation
jl. u2. ; goto testmore
e. ; end of after send message
\f
; fpa-subproc standard types
; eli, 21.8.1975
; before header
;
; a header (and maybe a corresponding datablock) is to be transmitted.
; find first non-processed message in queue of subproc and initialize
; transmit-parameters in mainproc.
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q1: ; before header:
jl. w3 u20. ; test answer attention
jl. w3 u12. ; w2:=mes:= first pending message
sn w2 0 ; if mes=0 then
jl. u3. ; goto no block.
; message found. initiate transfer
jl. w3 u30. ; prepare transfer
jl (b101) ; goto mainproc return
e. ; end of before header
\f
; fpa-subproc standard types
; eli, 21.8.1975
; after header and data transmitted
;
; entered by mainproc, when a header and a corresponding datablock
; (if any) has been transmitted.
; the result of the transmission is checked and if an error has
; occured, the message is returned with result=4 (receiver
; malfunction).
;
; finally the state of the subproc is checked for transmission of a
; new block.
b. i10, j10
w.
q2: jl. w3 u40. ; after header: test header transmitted
jl. u2. ; error: goto testmore
jl. u2. ; goto testmore
e. ; end of header and data transmitted
\f
; fpa-subproc standard types
; eli, 15.1.1976
; after header received
;
; a header has been received.
; for this kind of subprocs (with no special actions) it can
; only specify the functions <answer input with data> or
; <answer message with data>.
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q3: jl. w3 u50. ; after header received: test answer header
jl. u2. ; goto testmore
e. ; end of after header received
\f
; fpa-subproc standard types
; eli, 15.1.1976
; after data received
;
; check transmission.
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q4: jl. w3 u60. ; after data received: test data received
jl. u2. ; goto testmore
; attention. no special action
jl. u2. ; goto testmore
e. ; end of data received
\f
; fpa-subproc standard types
; eli, 16.12.1975
; after create
;
; the subproc has just been created.
; no special action
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q5: ; after create:
jl (b101) ; goto return
e. ; end of after create
e. ; end of standard types
\f
; fpa-subproc terminals
; eli, 20.1.1976
c.(:a80>12a.1:)-1 ; if terminal bit then include:
b. q20, s20
w.
; this code takes care of special actions (such as <to>, <from>,
; <attention> etc.) needed for terminals connected as subprocesses.
m. terminal link
; entry point table:
h108: q0 ; after send message
q1 ; before header transmit
q2 ; after header transmit
q3 ; before data receive
q4 ; after data receive
q5 ; after create
; definition of local part of subproc
b. j0
w.
s0=p0 ; start of local area
j0=s0 ; save start
s5= s0 ; <special actions mask> (1 byte)
s6= s0+1, s0=s0+2 ; <special action selected> (1 byte)
s7= s0+1, s0=s0+2 ; <bufclaim> note: position fixed. required
; by regretted message.
s1= s0 ; <1st word of user name>
s2= s0+2 ; <2nd - - - -<
s3= s0+4 ; <3rd - - - - >
s4= s0+6, s0=s0+8 ; <4th - - - - >
; test for size of private part not exceeded
c. (:s0-j0-v1-1:) ; v1= max size allowed for private part
m. fpa terminal: private part too long
z.
e. ; end of definition of private part
; maskbits in <special actions mask>
s10= 2.0001 ; output <:att:>
s11= 2.0010 ; input name
s12= 2.0100 ; output <:unknown:>
s13= 2.1000 ; output name
\f
; fpa-subproc terminals
; eli, 15.1.1976
; after send message
;
; a new message has been received.
; check accessrights and (if ok) link the message into the queue
; of pending messages. if subproc is not busy, then link subproc
; in queue of mainproc for later activation.
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q0: ; after send message:
jl. w3 u4. ; check and link operation
jl. u2. ; goto testmore
e. ; end of after send message
\f
; fpa-subproc terminals
; eli, 15.1.1976
; before header
;
; the subproc has been activated by mainproc for transmission
; of a header and maybe an associated datablock
;
; first pending special actions such as <answer attention>,
; output of user name etc. will be processed.
;
; then the messagequeue of the subproc is examined for a pending
; message and if none is found return is made to mainproc with a
; <no block>-status
;
; if an input- or output message is found the name of the sending
; process is output first, if it is different from <user name>,
; i.e. the name of the last sending process.
;
; otherwise standard transmission of the message is initiated.
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i30, j20
w.
q1: ; before header:
jl. w3 u20. ; test answer attention
; no answer attention pending.
; test for pending special actions
bz w0 x1+s5 ; if special actions mask(subproc)<>0 then
sz w0 s10+s11+s12+s13;
jl. q10. ; goto find special action
jl. w3 u12. ; mes:= find first message
sn w2 0 ; if mes=0 then
jl. u3. ; goto no block
; message found. test for input or output
bz w0 x2+8 ; oper:= operation(mes)
se w0 3 ; if oper=input or output then
sn w0 5 ;
jl. i1. ;
jl. i4. ; begin
; test username
i1: rs. w0 j0. ; save operation
rl w2 x2+6 ; if name(sender(mes))<>user name(subproc) then
dl w0 x2+a11+2 ;
sn w3 (x1+s1) ;
se w0 (x1+s2) ;
jl. i2. ;
dl w0 x2+a11+6 ;
sn w3 (x1+s3) ;
se w0 (x1+s4) ;
jl. i3. ;
jl. i4. ; begin
i2: ds w0 x1+s2 ; user name(subproc):= name(sender(mes))
dl w0 x2+a11+6 ;
i3: ds w0 x1+s4 ;
; the text <:to:> or <:from:> followed by the name of the
; sender should be output before the message itself
al w0 s13 ; special action(subproc):= output name
hs w0 x1+s5 ;
al w0 v72 ; special messages(state(subproc)):= true
lo w0 x1+p12 ;
rs w0 x1+p12 ;
rl. w0 j0. ; goto if saved operation=output then
se w0 3 ; output(FROM) else
am i17 ; output(to)
jl. i14. ; end name<>user
; end input or output
; prepare normal message and (maybe) datablock
i4: rl w2 b18 ; mes:= current message(monitor)
jl. w3 u30. ; prepare transfer
jl (b101) ; goto mainproc return
j0: 0 ; saved operation
; the following table is used to select special actions
;
; - the first byte holds a bit to be tested against the <special
; actions mask>
; - the second byte holds the relative address of the action (relative to i10)
; of the action to be performed if the bit is set
;
; note, that the ordering of the entries is important. it describes
; (as an example) that the text <:att:> should be otuput
; before the name is read in
i10: h.
s12, i16. ; unknown
s10, i13. ; attention
s11, i19. ; input name
s13, i18. ; output name
w.
q10: ; find special action:
al. w3 i10. ; w0 holds special actions mask
jl. i12. ;
i11: al w3 x3+2 ; find entry with bit set in special actions mask
i12: bz w2 x3 ;
so w0 x2 ;
jl. i11. ;
; w3 points to entry
hs w2 x1+s6 ; save action selected
ba w3 x3+1 ;
jl x3+1 ; goto action
; table of special texts
; first word holds length of following text in 8-bit characters
j16: i20, <:<10>att<32>:>, i20=(:k-j16-2:)/2*3
j17: i21, <:<10>to<32>:>, i21=(:k-j17-2:)/2*3
j18: i22, <:<10>from<32>:>, i22=(:k-j18-2:)/2*3
j19: i23, <:unknown<10>:>, i23=(:k-j19-2:)/2*3
i13: am j16-j17 ; text:= att or
i14: am j17-j18 ; to or
i15: am j18-j19 ; from or
i16: al. w2 j19. ; unknown
i17=i15-i14
; w2 points in table above
rl w3 x1+a50 ; main:= mainproc(subproc)
c. p103-1
al w0 2 ; addresscode(main):= driver area
hs w0 x3+p72 ;
z.
al w0 x2+2 ; first(main):= first(text)
rs w0 x3+p65 ;
rl w0 x2 ; data size(main):= header size(main):=
rs w0 x3+p66 ; size(text)
rs w0 x3+p64 ;
al w0 v52+(:1<0:); function(main):= output+databit
hs w0 x3+p61 ;
la w0 g50 ; store even function in messagetable
; set rest
;
; initiate standard parameters in mainproc
;
; upon entry:
; w0 value to store in message table(subproc, bufno)
; w1 subproc
; w2
; w3
q11: jl. w3 u9. ; set rest: message table(subproc,bufno):= w0
rs w0 x2 ;
al w0 -1 ; decrease(free buffers(subproc))
ba w0 x1+p16 ;
hs w0 x1+p16 ;
jl. w3 u25. ; set linkparams
jl (b101) ; goto mainproc return
; initiate output of user name
;
; note: during transmission a newline character (value=10) is
; inserted as the 12th character in the user name.
; it is removed again after transmission.
i18: al w0 10 ; last character(user name(subproc)):= 10
lo w0 x1+s4 ;
rs w0 x1+s4 ;
c. p103-1
rl w3 x1+a50 ; main:= main(subproc)
al w0 8 ; addresscode(main):= dirty
hs w0 x3+p72 ;
al w0 0 ; messagebuf(main):= 0 (no buf.)
rs w0 x3+p71 ;
z.
al w0 v52+(:1<0:); function:= output+databit
jl. i5. ;
; initiate input of user name
i19: al w0 v70 ; blocked(subproc):= true
lo w0 x1+p12 ;
rs w0 x1+p12 ;
al w0 v50 ; function:= input
i5: ;
rl w3 x1+a50 ; main:= mainproc(subproc)
hs w0 x3+p61 ; function(main):= function selected
al w2 8/2*3 ; size:= size of user name
rs w2 x3+p64 ; header size(main):= size
so w0 2.1 ; if even(function) then size:= 0
al w2 0 ;
rs w2 x3+p66 ; data size(main):= size
al w0 x1+s1 ; first(main):= first of user name(subproc)
rs w0 x3+p65 ;
; store function selected in message table as special flag
bz w0 x3+p61 ; w0:= even function(main)
la w0 g50 ;
jl. q11. ; goto set rest
e. ; end of before header
\f
; fpa-subproc terminals
; eli, 16.1.1976
; after header and data transmitted
;
; a header and maybe a datablock has been transmitted
;
; if the <special action selected>-flag is nonzero it is used
; to clear a bit in the <special actions mask>. if this thereby
; becomes zero the <special messages> flag in the state-field of
; the subproc is cleared
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q2: ; after header:
jl. w3 u40. ; test header and data transmitted
jl. u2. ; error: goto testmore
al w3 -1 ;
bs w3 x1+s6 ; if special action selected(subproc)=0 or
am (x1+a50) ; transmission state(mainproc)<>0 then
bz w0 +p60 ;
se w3 -1 ;
se w0 0 ;
jl. u2. ; goto testmore
bz w0 x1+s5 ; remove bit in special actions mask(subproc)
la w0 6 ;
hs w0 x1+s5 ;
al w3 0 ; special action selected(subproc):= 0
hs w3 x1+s6 ;
al w2 (:-1:)<8 ; last char(username(subproc)):= 0
la w2 x1+s4 ;
rs w2 x1+s4 ;
se w0 0 ; if special actions mask(subproc)<>0 then
jl. u2. ; goto testmore
al w0 -1-v72 ; remove special message flag
la w0 x1+p12 ;
rs w0 x1+p12 ;
jl. u2. ; goto testmore
e. ; end of after header
\f
; fpa-subproc terminals
; eli, 15.1.1976
; before data receive
;
; activated, when a header which will be followed by a datablock has been
; received
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q3: ; before data receive:
jl. w3 u50. ; test answer header
; return to <link>: normal function
; return will only be made if the datablock could not be
; received (sender stopped etc.)
jl. u2. ; goto testmore
; return to <link+2>: special function
; can only be input of attention name
; note: if only a single character has been received and result and
; status is ok (=0) then a newline character must have been
; typed alone. in that case the datablock is skipped
; and the current name used.
rl w3 x1+a50 ; main:= mainproc(subproc)
al w0 8 ; address code(main):= dirty
hs w0 x3+p92 ;
c. p103-1
al w0 0 ; messagebuf(main):= 0 (no buf)
rs w0 x3+p91 ;
z.
al w0 x1+s1 ; first(main):= first of user name(subproc)
rs w0 x3+p85 ;
rl w0 x3+p84 ; size8:=
rs w0 x3+p86 ; data size(main):= header size(main)
bl w2 x3+p82 ; if size8<>1 or
ba w2 x3+p83+1 ;
sn w0 1 ; result(main)<>0 or status(main,0:11)<>0 then
se w2 0 ;
jl (b101) ; goto mainproc return
al w0 p162 ; skip(main):= true
hs w0 x3+p80 ;
jl. w3 u11. ; clear message entry
al w0 -1-v70 ;
la w0 x1+p12 ; blocked(subproc):= false
rs w0 x1+p12 ;
jl. q15. ; goto attention name ready
e. ; end of before data
\f
; fpa-subproc terminals
; eli, 15.1.1976
; after data received
;
; activated, when a header without data or a datablock following a
; header has been received
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q4: ; after data received:
jl. w3 u60. ; test data received
; return to <link>: normal function
jl. u2. ; goto testmore
; return to <link+2>: attention
jl. q12. ; goto attention received
; return to <link+4>: special function received
; a special text (unknown, to, from, att) has been output or
; an attention name has been read in.
sn w2 v50 ; goto if message entry(bufno)=input then
jl. q13. ; attention name received else
jl. u2. ; testmore
e. ; end of after data received
\f
; fpa-subproc terminals
; eli, 15.1.1976
; attention received
;
; an attention message has been received.
; check reserverstatus of subproc and, if not reserved initiate
; input of name.
;
b. i10, j10
w.
q12: ; attention:
rl w0 x1+a52 ; if reserved(subproc)<>0 then
sn w0 0 ; begin comment: find reserver
jl. i2. ;
rl w3 b6 ; entry:= first internal in name table
jl. i1. ;
i0: al w3 x3+2 ; while idbit(proc(entry))<>reserver(subproc) do
i1: rl w2 x3 ; entry:= entry+2
se w0 (x2+a14) ;
jl. i0. ;
jl. q14. ; goto process found
; end reserved<>0
; prepare subproc to print text <:att:> and read in name
i2: al w0 s10+s11 ; special actions mask(subproc):= output(att),
hs w0 x1+s5 ; input(name)
al w0 v72 ; special messages(subproc):= true
lo w0 x1+p12 ;
rs w0 x1+p12 ;
jl. u2. ; goto testmore
e. ; end of attention received
\f
; fpa-subproc terminals
; eli, 22.1.1976
; attention name received
;
; any error status cause the text <:unknown:> to be output
;
; otherwise the terminating newline is removed and the
; name searched for
b. i10, j10
w.
q13: ; attention name:
rl w3 x1+a50 ; main:= mainproc(subproc)
bl w2 x3+p82 ;
ba w2 x3+p83+1 ;
se w2 0 ; if status(main, 0:11)=result(main)=0 then
jl. i0. ; begin
rl w3 x3+p84 ; if size(main)=0 then
sn w3 0 ; goto testmore
jl. u2. ; mask of last received character with value=10
al w3 x3-1 ;
wd. w3 j1. ; note: w2 already zero
ls w3 1 ; index:= (size-1)//3*2
ls w2 3 ; position:= -((size-1) mod 3*8)
ac w2 x2 ;
rl. w0 j0. ; mask:= newline shift position
as w0 x2 ;
am x3 ; address:= first of user name(subproc)+index
al w3 x1+s1 ;
la w0 x3 ;
i1: rs w0 x3 ;
al w0 0 ; rest of user name(subproc):= 0
al w3 x3+2 ;
sh w3 x1+s4 ;
jl. i1. ;
; now a terminating newline has been replaced by a zero
; search for process
q15: ; attention name ready:
al w2 x1+s1 ; search name(user,entry,interval(subproc))
dl w1 x1+a49 ;
jl w3 d71 ;
rl w1 b19 ;
sn w3 (b7) ; if entry= name table end then goto unknown
jl. i0. ;
rl w2 x3 ; if kind(entry)<>internal or pseudoproc then
rl w0 x2+a10 ; goto unknown
se w0 64 ; goto process found
sn w0 0 ;
jl. q14. ; end
; prepare subproc to output the text <:unknown:>
i0: al w0 s12 ; special actions mask(subproc):= output(unknown)
hs w0 x1+s5 ;
al w0 v72 ; special messages(subprocstate):= true
lo w0 x1+p12 ;
rs w0 x1+p12 ;
jl. u2. ; goto testmore
j0: (:-1-10:)<16 ; mask to remove newline
j1: 3 ; division constant
e. ; end of attention name
\f
; fpa-subproc terminals
; eli, 15.1.1976
; process found
;
; clear message queue and deliver attention message
;
; upon entry:
; w0
; w1 subproc
; w2
; w3 name table addr. of receiver of attention buffer
b. i10, j10
w.
q14: ; process found:
rs. w3 j1. ; save name table address
rl w2 b8+4 ; mes:= first message
jl. i1. ;
i0: al w2 x2+a6 ; while sender(mes)<>subproc do
sl w2 (b8+6) ;
jl. i2. ;
i1: se w1 (x2+6) ; mes:= next(mes)
jl. i0. ;
; regret message found.
; note: will increase buffer claim by one
jl w3 d75 ; regretted message(mes)
i2: rl. w3 (j1.) ;
rl w0 x3+a14 ; if receiver is user of hostproc(subproc)
am (x1+a50) ; then receiver is made user of subproc
la w0 +a53+p202 ;
lo w0 x1+a53 ;
la w0 g65 ;
rs w0 x1+a53 ;
rl. w3 j0. ;
al w0 0 ; attention message
ds w0 g21 ; +0 : 1<16
al w3 0 ; +2 : 0
rl. w0 j1. ; +4 : 0
ds w0 g23 ; +6 : proc desc(sub)
dl w0 x1+a11+2 ; +8 : name(sub)
ds w0 g40 ; +10 : -
dl w0 x1+a12+2 ; +12 : -
ds w0 g42 ; +14 : -
jl. i4. ; for mes:= first pending(subproc) while mes<>0 do
i3: jl w3 g18 ; deliver result(1,mes,intervention)
i4: jl. w3 u22. ;
se w2 0 ;
jl. i3. ;
; get message and deliver it
rl. w3 j1. ; w3:= name table addr. of receiver
jd 1<11+16 ; send message(w1=sender, w3=name table of rec.)
; end of attention
jl. u2. ; goto testmore
j0: 1<16 ; attention status
j1: 0 ; saved message or process
e. ; end of process found
\f
; fpa-subproc terminals
; eli, 16.12.1975
; after create
;
; the subproc has just been created.
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q5: ; after create:
al w0 0 ; user name(subproc,0):= 0
rs w0 x1+s1 ; action selected(subproc):=
rs w0 x1+s6 ; action mask(subproc):= 0
jl (b101) ; goto return
e. ; end of after create
e. ; end of terminals
z. ;
h108=h100
\f
; fpa-subproc magnetic tape
; eli, 4.11.1975
c.(:a80>13a.1:)-1 ; if magtape bit then include:
b. q20, s10
w.
; this code takes care of special actions for magnetic tapes,
; connected to rc4000 through a devicecontroler
m. magnetic tape link
; entry point table:
h118: q0 ; after send message
q1 ; before header transmit
q2 ; after header transmit
q3 ; after header received
q4 ; after data received
q5 ; after create
; definition of local part of subproc
b. j0
w.
s0=p0 ; start of local area
j0=s0 ; save start
s1= s0, s0=s0+2 ; <state>
s2= s0, s0=s0+2 ; <file count>
s3= s0, s0=s0+2 ; <block count>
s5= s0, s0=s0+2 ; <last status>
s0=s0+2 ; one unused word
s4= s0, s0=s0+2 ; <remoter proc>
; test for size of private part not exceeded
c.(:s0-j0-v1-1:) ; v1= max. size of private part
m. fpa magnetic tape: private part too long
z.
e. ; end of definition of local part
\f
; fpa-subproc magnetic tape
; eli, 12.9.1975
; after send message
;
; a new message has been received.
; check message and link it to queue of subproc.
; if subproc is free, then link it to mainproc.
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q0: jl. w3 u4. ; after send message: check and link operation
al w0 0 ; state(magnetic tape):= 0
rs w0 x1+s1 ;
rl w2 b18 ;
bz w0 x2+8 ; oper:= operation(mes)
sn w0 5 ; if oper<>output then
jl. i0. ;
jl. u2. ; goto testmore
i0: al w3 1 ; sizeminus1:=
wa w3 x2+12 ; last(mes)-first(mes)+1
ws w3 x2+10 ; if sizeminus1>=maxsize(subproc) then
sl w3 (x1+p18) ;
jl g5 ; goto result 3
jl. u2. ; goto testmore
e. ; end of after send message
\f
; fpa-subproc magnetic tape
; eli, 15.1.1976
; before header
;
; examine the message-queue of the subproc for a pending message.
; if none is found return to mainproc with <no block>-status.
;
; otherwise initialize the mainproc sender table for transmission
; of a header and maybe a datablock.
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q1: ; before header:
jl. w3 u20. ; test answer attention
jl. w3 u12. ; mes:= find first message(subproc)
sn w2 0 ; if mes=0 then
jl. u3. ; goto no block
bz w0 x2+8 ;
so w0 2.1 ; if odd operation then
jl. j0. ; examine sender(mess);
jl w3 g34 ; stopped: goto stopped;
jl. j1. ; ok:
j0: jl. w3 u30. ; prepare transfer
al w0 0 ; current message(subproc):= 0
rs w0 x1+p13 ;
; the stop count of the sender will be increased at
; this point for input messages, thus assuring that the sender has not been
; stopped when the datablock arrives.
bz w0 x2+8 ; if oper(mes)<>input then
se w0 3 ;
jl (b101) ; goto mainproc return
jl. w3 u21. ; test and increase stop count
jl. u3. ; stopped: goto no block
jl (b101) ; ok: goto mainproc return
j1: rl w0 x1+s5 ; stopped:
rs w0 g20 ; status(mess):=saved status(sub);
ld w0 -100 ;
ds w0 g22 ; bytes, chars trf(mess):=0,0;
dl w0 x1+s3 ; file,block count(mess):=saved file, block count(sub);
ds w0 g24 ;
jl w3 g18 ; deliver result1;
jl. u3. ; goto no block;
e. ; end of before header
\f
; fpa-subproc magnetic tape
; eli, 15.1.1976
; after header transmitted
;
; a header and maybe a datablock has been transmitted.
;
; transmission is checked
;
; upon entry
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q2: ; after header transmit:
jl. w3 u40. ; test header and data transmitted
jl. u2. ; error: goto testmore
jl. u2. ; goto testmore
e. ; end of header transmitted
\f
; fpa-subproc magnetic tape
; eli, 15.1.1976
; after header received
;
; a header has been received.
; the function of the header may be
;
; <answer input with data> or <answer message with data>
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q3: ; before data receive:
jl. w3 u50. ; test answer header
jl. u2. ; goto testmore
e. ; end of after header received
\f
; fpa-subproc magnetic tape
; eli, 5.11.1975
; after data received
;
; a datablock following a header has been received.
;
; first adjust the position of the tape described in <file count>
; and <block count>.
;
; then check transmission in standard way
;
; upon entry
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q4: jl. w3 q10. ; after data received: adjust position
jl. w3 u60. ; test data received
jl. u2. ; goto testmore
; <link+2>: attention received
; find remoterprocess, if any
rl w0 (b3) ; remoter:= first in name table
rs w0 x1+s4 ;
jl. w3 q11. ; clear queue(state:= 2)
i0: rl w3 x1+s4 ; next:
rl w2 x3+a54 ; rem:= remoter(subproc); mes:= first mes(rem)
se w3 0 ; if rem=0 or empty(mes) then
sn w2 x3+a54 ;
jl. u2. ; goto testmore
rs w2 b18 ; current buf:= mes
al w0 0 ;
ds w1 g21 ; answer(0):= 0; answer(2):= proc
jl w3 g18 ; deliver result(1)
jl. i0. ; goto next
e.
\f
; fpa-subproc magnetic tape
; eli, 5.11.1975
; after create
;
; the subproc has just been created.
; no special actions needed
;
; upon entry
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q5: ; after create:
rl w0 (b3) ; remoter(subproc):= first in name table
rs w0 x1+s4 ;
jl (b101) ; goto return
e. ; end of after create
\f
; fpa-subproc magnetic tape
; eli, 14.9.1975
; procedure adjust position
;
; the position of the tape as described in <file count> and <block count>
; is adjusted in the following way:
;
; after an input- or output operation <block count> is increased by
; one, unless
; status bit2 (timer) is set or
; the size-field of mainproc is zero.
;
; if status bit7 is set (tape mark), <file count> is increased by
; one and <block count> is cleared.
;
; in case of answer message with data, the <file count> and
; <block count> is given in the datablock following.
;
; the new values of <block count> and <file count> are stored
; in the answer-variables g23 and g24, ready for sending of an
; answer
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 unchanged
; w3 link unchanged
b. i10, j10
w.
q10: ds. w3 j0. ; adjust position: save link and w2
rl w3 x1+a50 ; main:= mainproc(subproc)
zl w0 x3+p83+1 ; if status(main)=intervention then
ls w0 12 ; shift status
sh w0 -1 ;
jl. i4. ; goto intervention
rs w0 x1+s5 ; last status(proc):=status(main);
bz w0 x3+p81 ; func:= function(main)
rl w2 0 ; save function in w2
la w0 g50 ; remove databit
se w0 v51 ; if func=answer input or
sn w0 v53 ; func=answer output then
jl. i0. ; goto increase
se w2 v55+(:1<0:); if func<>answer message with data then
jl. i2. ; goto set g23 and g24
; get values from datablock of answer
am (x1+a50) ; w2:= first received address(mainproc(subproc))
rl w2 +p85 ;
dl w0 x2+8 ; get file- and blockcount from datablock
ds w0 x1+s3 ; goto set g23 and g24
jl. i2. ;
; after input- or output
; adjust file- and blockcount as described above
i0: bz w2 x3+p83+1 ; increase:
rl w3 x3+p84 ; if timer(status(main))=0 and
so w2 1<9 ; size(main)<>0 then
sn w3 0 ;
jl. i1. ;
dl w0 x1+s3 ; block count(subproc):=
ba. w0 1 ; blockcount(subproc)+1
rs w0 x1+s3 ;
i1: so w2 1<4 ; if tape mark(status(main))=1 then
jl. i2. ; begin
al w3 1 ; file count(subproc):= file count(subproc)+1
wa w3 x1+s2 ;
al w0 0 ; block count(subproc):= 0
ds w0 x1+s3 ; end
; set new (or saved) content in g23 and g24.
; w3w0 holds value
i2: dl w0 x1+s3 ; set g23 and g24:
ds w0 g24 ;
jl. i3. ;
; intervention status (tape has been set local)
i4: jl. w3 q12. ; clear queue(state:= 1)
; restore w2 and w3 and return
i3: dl. w3 j0. ;
jl x3 ;
0 ; saved w2
j0: 0 ; saved link
e. ; end of procedure adjust position
\f
; fpa-subproc magnetic tape
; eli, 25.3.1976
; procedure clear queue
;
; called when the tape has been set offline or online.
; the name of the process is removed. an eventual reserver
; is removed. filecount, blockcount are set to -1.
; state is set depending on entrypoint selected.
; an answer with result 4 from the device is simulated.
; all pending messages are returned with result 5 (unknown).
;
; call return
; w0 undefined
; w1 subproc unchanged
; w2 undefined
; w3 link undefined
b. i10, j10
w.
; clear queue:
q11: am 1 ; state:= 2 (i.e. unknown mounted)
q12: al w0 1 ; or state:= 1 (i.e. local)
rs w0 x1+s1 ;
rs. w3 j0. ; save link
al w0 0 ; reserver(subproc):=
rs w0 x1+a11 ; name(0):= 0
rs w0 x1+a52 ;
rs w0 x1+s5 ; last status(proc):=status(main);
al w0 4 ; simulated result(mainproc(subproc)):= 4
am (x1+a50) ;
hs w0 +p82 ;
al w0 -1 ; filecount(subproc):=
al w3 -1 ; blockcount(subproc):= -1
ds w0 x1+s3 ;
jl. i1. ;
i0: al w0 5 ; for mes:= all unprocessed messages(subproc) do
jl w3 g19 ; deliver result(mes, 5)
i1: jl. w3 (j1.) ;
se w2 0 ;
jl. i0. ;
; return
jl. (j0.) ;
j0: 0 ; saved link
j1: u22 ;
e. ; end of clear queue
e. ; end of magnetic tape
z. ;
h118=h100
; stepping stones.
jl. u2. , u2 =k-2
jl. u20. , u20=k-2
jl. u21. , u21=k-2
\f
; fpa-subproc disc- and areatypes
; eli, 14.10.1975
c.(:a80>14a.1:)-1 ; if disc bit then include:
b. q20, s10
w.
;
; a disc connected to an rc3600 is in rc4000 represented by a subproc.
;
; an area on the disc is represented by a normal area process having
; 'document name' equal to the name of the disc-subproc (as defined
; by 'create peripheral process').
;
; the filestructure of the disc is defined in the normal way by a
; slicetable in the monitor, provided the disc has been included in
; the bs-system by a call of 'include bs'.
;
; messages may be sent either directly to the disc, in which case
; absolute segment addressing is used, or to an areaprocess in which
; case adressing relative to the start of the area is used.
;
; the following subproc handles both messages to discs and areas.
; the only difference is the initial handling of the message just
; after 'send message'. here the segment number in a message to an
; areaprocess is converted to a physical (absolute) segment number.
;
; like other subprocesses a message may be split into a number of
; messages to the device, each (exept the last) corresponding to
; the maximum buffer length of the device as stated in 'create'.
; but due to the file structure of a disc another level of message-
; splitting is introduced (note: this level of message-splitting
; is already known from the existing handling of a disc, connected
; directly to an rc4000).
;
; a file need not correspond to a number of physically con-
; secutive segments.
;
; therefore a message to an areaprocess is treated in the following
; levels:
;
; 1. message level
; 2. slice level: prepare a number of consecutive segments.
; 3. buffer level: transfer these segments in a number
; of blocks corresponding to the maximum device buffer
; length.
;
; stage 3 is executed 1 or more times for each instance of stage 2,
; and stage 2 is repeated for each group of consecutive segments
; until either the file in question or the message data area suppli-
; ed from the internal process is exhausted.
;
; in stage 2 and 3 there is no destinction between messages originally
; sent to an areaprocess or to a discprocess. as there is no file-
; structure for messages to the disc, stage 2 must 'automatically'
; be dummy in that case.
;
; the subproc uses the message as storage for information making this
; possible.
;
; originally a message to an area- or a discprocess holds the following
; information:
;
; message+8: operation<12+mode
; +10: first address
; +12: last address
; +14: first segment
; (absolute for messages to disc,
; relative to start of area otherwise)
;
; after 'send message' and in the following processing of the message
; it is transformed in the following way:
;
; message+8: unchanged from above
; +10: unchanged from above
; +12: last address corresponding to current consecutive
; segments (initially set equal to +10)
; +14: first physical segment
; +16: next physical segment, i.e. start segment for the
; next consecutive segments
; +18: original value of last address (from above)
; +20: expected size
; +22: updated first address
;
; note, that +8, +10, +12, +20 and +22 corresponds to a message as it
; is normally required by the common fpa-procedures.
; these procedures may then handle the splitting of the consecutive
; segments depending on the buffersize of the device. only a little
; extra code is required here, taking care of updating of 'first phy-
; sical segment' after each transfer.
;
; when the consecutive segments are exhausted the next number of
; consecutive segments are selected, and +12, +14 and +16 updated
; correspondingly.
;
; for a message directly to the discprocess, +12 and +18 will be
; set equal to each other, thus simulating that the last part of a
; message is processed.
;
; when a message is sent to an areaprocess the standard 'send message'
; action is entered. there the discprocess corresponding to the area
; is found and if the kind of the discprocess is a subprocess, a jump
; is performed through send message for subprocs to the
; send message action for disc-subprocs. a flag in the
; subproc description shows the area process that is the
; actual receiver of the message
;
; a message to the discprocess itself enters here at q0.
\f
; fpa-subproc disc- and areatypes
; eli, 15.10.1975
m. disc link
; entry point table
h106: q0 ; after send message (only for disc)
q1 ; before header
q2 ; after header transmit
q3 ; after header receive
q4 ; after data receive
q5 ; after create
; definition of local part of subproc
b. j0
w.
s0= p0 ; start of local part
j0= p0 ; save start
s0=s0+2 ; 1 unused word
s2=s0, s0=s0+2 ; <chaintable>
s3=s0, s0=s0+2 ; <slicelength>
s4=s0, s0=s0+2 ; <state>
; test for size of private part not exceeded
c. (:s0-j0-v1-1:)
m. fpa subproc: disctype private part too long
z.
e. ;
q12: (:-1:)<9 ; constant to mask of to integral number
; of segments
\f
; fpa-subproc disc- and areatypes
; eli, 22.1.1976
; after send message (disc)
;
; set up the message, so that the procedure 'prepare consecutive
; area' will be dummy when applied to this message. this is done
; by setting
;
; saved last address(message):= first addr(mes)+
; (first addr(mes)-last addr(mes))//512*512
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q0: ; after send message:
rl w0 x1+a56 ; if called via areaprocess then
sz w0 (:-1:)<1 ;
jl. q11. ; goto after send message(area)
jl. w3 u4. ; check and link operation
rl w2 b18 ; w2:= current message
bz w0 x2+8 ; if oper(mes)<>input and
se w0 3 ; oper(mes)<>output then
sn w0 5 ;
jl. i0. ;
jl. u2. ; goto testmore
i0: al w3 2 ; saved last(mes):= last(mes):=
wa w3 x2+12 ;
rl w0 x2+10 ; (last(mes)-first(mes)+2)//512*512
ws w3 0 ;
la. w3 q12. ;
wa w3 0 ; + first(mes)
al w3 x3-2 ; - 2
rs w3 x2+12 ;
rs w3 x2+18 ;
;
jl. u2. ; goto testmore
e.
\f
; fpa-subproc disc- and areatypes
; eli, 22.1.1976
; after send message (area)
;
; prepare message for first call of 'prepare consecutive area'
; note, that upon entry w0 will hold the areaprocess address,
; and b19 (monitor entry) will hold the mainproc
; address of the areaprocess (i.e. the disc-subproc)
;
; upon entry:
; w0 area
; w1 subproc (disc)
; w2
; w3
b. i10, j10
w.
q11: ; after send message:
al w2 0 ; called via areaprocess:= false
rs w2 x1+a56 ;
rl w1 0 ; proc:= area
rl w2 b18 ; w2:= current message
bz w0 x2+8 ; if oper(mes)<>input and
se w0 3 ; oper(mes)<>output then
sn w0 5 ;
jl. i0. ;
jl. i1. ; goto link
; input or output operation
i0: rl w0 x2+14 ; if first segment(mes)<0 or
sl w0 0 ; first segment(mes)>=segments(area) then
sl w0 (x1+a61) ; goto outside
jl. i2. ;
; adjust addresses to correspond to an integral number of
; segments
dl w0 x2+12 ; last:= last(mes)
rs w3 x2+22 ; updated first(mes):= first(mes)
al w3 x3-2 ;
rs w3 x2+12 ; last(mes):= first(mes)-2
ws w0 6 ; coresize:= (last-first(mes)+2)//512*512
la. w0 q12. ;
rl w3 x1+a61 ; areasize:= (segments(area)-first segment(mes))*512
ws w3 x2+14 ;
ls w3 9 ;
sh w0 (6) ; size:= min(coresize, areasize)
rl w3 0 ;
al w3 x3-2 ;
wa w3 x2+10 ; saved last(mes):= first(mes)+ size -2
rs w3 x2+18 ;
; get start in chain table of segments
rl w0 x2+14 ; no of slices:= first segment(mes)/
al w3 0 ; slicelength(mainproc(area))
am (x1+a50) ;
wd w0 +s3 ;
rs w3 x2+16 ; save first segment in slice
; normally last(mes) points to the last address for which data
; has been transferred.
; segments are normally transferred from the first segment in
; a slice an on. this does however not hold for the first
; transfer, where it starts with segment no
; (first segment modulo slicelength).
; this is corrected for by subtracting from last(mes)
; the core occupied by the not transferred segments in the
; slice.
; this makes last(mes) point to a logical address (ahead of the
; users buffer) where the transfer of a previous slice would have
; terminated.
ls w3 9 ; last(mes):= last(mes)-
rx w3 x2+12 ;
ws w3 x2+12 ; first segm in slice*512
rs w3 x2+12 ;
rl w2 x1+a60 ; w2:= first slice(area)
; now change to run in mainproc(area), i.e. in the subproc actually
; corresponding to the disc
rl w1 x1+a50 ; proc:= mainproc(area)
wa w2 x1+s2 ; first slice:= first slice(area)+chaintable(proc)
jl w3 d74 ; follow chain(w2=first slice, w0=no of slices)
ws w2 x1+s2 ; next phys segm:= slice*slicelength(proc)+
al w0 x2 ;
rl w2 b18 ; +
wm w0 x1+s3 ;
wa w0 x2+16 ; first segment in slice
rs w0 x2+16 ;
jl. w3 q10. ; prepare consecutive area
i1: am (b19) ; link:
al w1 +a54 ; w1:= addr of message queue of subproc
jl w3 d6 ; link(w1=head, w2=elem)
rl w1 b19 ; restore current subproc.
jl. u2. ; goto testmore
; first segment of message is outside the area. return
; status 'end of document'.
i2: rl w1 g62 ; outside: status:= bit5
rs w1 g20 ;
ld w1 -65 ; bytes:= chars:= 0
ds w1 g22 ;
jl w3 g18 ; deliver result(1)
jl. u2. ; goto testmore
e. ; end of after message (area)
\f
; fpa-subproc disc- and areatypes
; eli, 14.10.1975
; before header (disc and area)
;
; prepare transmission of next block.
;
; note, that the fields <status> and <mode> are used to hold the
; segment number in case of an input- or output operation.
;
; upon entry
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q1: ; before header:
jl. w3 u20. ; test answer attention
jl. w3 u12. ; w2:= find first message
sn w2 0 ; if w2=0 then
jl. u3. ; goto no block
; test for input- or output message
jl. w3 u30. ; prepare transfer(message)
bz w0 x2+8 ; if oper(mes)<>input and
se w0 3 ; oper(mes)<>output then
sn w0 5 ;
jl. i1. ;
jl (b101) ; goto mainproc return
i1: rl w0 x2+14 ; w0:= first phys segment(mes)
am (x1+a50) ; state,mode(mainproc(subproc)):= w0
rs w0 +p63 ;
; increase stop count at this time also for input messages,
; thus ensuring that the process is still present when
; the answer arrives (which does not take long time for
; discs)
jl. w3 u21. ; test and increase stop count
jl. u3. ; stopped: goto no block
jl (b101) ; running: goto mainproc return
e. ; end of before header
\f
; fpa-subproc disc- and areatypes
; eli, 3.2.1976
; after header transmit
;
; a header and maybe a corresponding datablock has been transmitted.
; for messages originally sent to an areaprocess, the field
; first physical segment is increased corresponding to the
; size of the datablock transferred.
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q2: ; after header transmit:
jl. w3 u8. ; mes:= message table(current bufno)
rs. w2 j0. ; save mes
jl. w3 u40. ; test header transmit
jl. u2. ; error: goto testmore
rl. w2 j0. ; restore mes;
se w2 0 ; if mes = 0 then
jl. i1. ; begin
rl w2 x1+p13 ; mes:= current message;
sn w2 0 ; if mes = 0
jl. u2. ; then goto testmore;
i1: ; end;
rl w3 x1+a50 ; main:= mainproc(subproc)
bz w0 x3+p61 ; if function(main)<>input and
se w0 v50 ; function(main)<>output then
sn w0 v52+(:1<0:);
jl. i0. ;
jl. u2. ; goto testmore
i0: rl w0 x3+p64 ; segments:= convert to 12(size(main))//512
jl. w3 u15. ;
ls w0 -9 ;
rl. w2 j0. ; restore mes
wa w0 x2+14 ; first phys segm(mes):= first phys segm(mes)+segments
rs w0 x2+14 ;
; if the last portion of the current consecutive area has been
; initialized and more is to be transferred, then prepare
; next consecutive segments.
rl w3 x1+p13 ; if current message(subproc)=0 and
rl w0 x2+12 ; last(mes)<>saved last(mes) then
sn w3 0 ; begin
sn w0 (x2+18) ;
jl. u2. ;
rs w2 x1+p13 ; current message(subproc):= mes
jl. w3 q10. ; prepare consecutive area
; end
jl. u2. ; goto testmore
j0: 0 ; saved message address
e. ; end of after header transmit
\f
; fpa-subproc disc- and areatypes
; eli, 14.10.1975
; after header received
;
; a header has been received.
; no special actions required
;
; upon entry
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q3: jl. w3 u50. ; after header receive: test header received
jl. u2. ; goto testmore
e. ; end of after header received
\f
; fpa-subproc disc- and areatypes
; eli, 14.10.1975
; after data received
;
; a datablock following a header has been received
;
; status intervention or result disconnected will cause the name of the
; subproc to be removed and the message returned with result 5
; (receiver does not exist)
;
; upon entry
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q4: ; after data:
rl w3 x1+a50 ; main:= mainproc(subproc)
bl w2 x3+p82 ; if result(main)=disconnected or
bl w0 x3+p81+1 ; status(main)=intervention then
sl w0 0 ; begin comment: remove name of proces;
sn w2 3 ;
jl. +4 ;
jl. i1. ;
al w0 4 ; simulated result(main):= 4
hs w0 x3+p82 ;
al w0 0 ; name(subproc):=
rs w0 x1+a11 ; reserver(subproc):= 0
rs w0 x1+a52 ;
rl w3 b5 ; for area:= all area procs do
i0: rl w2 x3 ;
sn w1 (x2+a50) ; if main(area)=subpproc then
rs w0 x2+a50 ; main(area):= 0
al w3 x3+2 ;
se w3 (b6) ;
jl. i0. ; end
;
i1: jl. w3 u60. ; test data received
jl. u2. ; normal: goto testmore
jl. u2. ; attention: goto testmore
e. ; end of data received
\f
; fpa-subproc disc- and areatypes
; eli, 16.12.1975
; after create
;
; a disctype subproc has been created.
;
; the fields <chaintable> and <slice length> will later be
; initialized by procfunc when an internal process executes
; 'create bs'.
;
; upon entry
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q5: ; after create:
; adjust maximum buffer size to an integral number of segments
rl. w0 q12. ;
la w0 x1+p18 ; size(subproc):= size(subproc)//512*512
rs w0 x1+p18 ;
jl (b101) ; goto return
e. ; end of create
\f
; fpa-subproc disc- and areatypes
; eli, 22.1.1976
; procedure prepare consecutive area
;
; makes the pointers <updated first> and <last> in the
; messagebuffer describe a storage area corresponding to
; a number of consecutive disc segments
;
; call return
; w0 undefined
; w1 subproc(disc) unchanged
; w2 message unchanged
; w3 link undefined
b. i10, j10
w.
q10: ds. w3 j1. ; prepare consecutive area:
rl w0 x2+16 ; save message and link
rs w0 x2+14 ; first phys segm(mes):= next phys segm(mes)
al w3 0 ; slice:= next phys segm(mes)/slicelength(subproc)+
wd w0 x1+s3 ;
wa w0 x1+s2 ; chaintable(subproc)
rl w3 x2+18 ;
rl w2 x1+s3 ; length:= slicelength(subproc)*512
ls w2 9 ;
ds. w3 j3. ;
am. (j0.) ;
rl w3 +12 ;
wa. w3 j2. ; addr:= last addr(mes)+ length
; scan slicetable as long as a slice with content 1 is encountered
i0: bz w2 (0) ; while chaintable(slice)=1 and
sn w2 1 ; addr<saved last(mes) do
sl. w3 (j3.) ; begin
jl. i1. ;
ba. w0 1 ; slice:= slice+1
wa. w3 j2. ; addr:= addr+length
jl. i0. ; end
; dataarea at user exhausted or nonconsecutive segments
i1: rl. w2 j0. ; restore message
sl. w3 (j3.) ; if addr<saved last(mes) then
jl. i2. ; begin nonconsecutive, more to send.
rs w3 x2+12 ; last(mes):= addr
ba w0 (0) ; next phys segm(mes):= (next slice(slice)-
ws w0 x1+s2 ; chaintable(subproc))*slicelength(subproc)
wm w0 x1+s3 ;
rs w0 x2+16 ;
jl. (j1.) ; end else
i2: rl w0 x2+18 ; last addr(mes):= saved last(mes)
rs w0 x2+12 ;
; return
jl. (j1.) ; goto return
; working locations
j0: 0 ; saved message
j1: 0 ; saved link
j2: 0 ; length (i.e. slicelength*512)
j3: 0 ; saved last address(mes)
e. ; end of prepare consecutive area
\f
e. ; end of disc- and areatypes
z. ;
h106=h100
\f
; fpa-subproc discette
; jr, 78.08.22
c.(:a80>15a.1:)-1 ; if flexible disc bit then include:
; stepping stone:
jl. u3. , u3=k-2
jl. u12., u12=k-2
jl. u4. , u4=k-2
jl. u14. , u14=k-2
jl. u30. , u30=k-2
jl. u40. , u40=k-2
b. q20,s10,n10 w.
; this subdriver is used for links to discettes. it differs from the
; 'standard type driver' in these ways:
; - the stopcount of a sender that wants to input is raised
; already in entry 1 to prevent a stopped sender when receiving in
; entry 3.
; - if sender is stopped (only when inputting or outputting) in entry 1,
; the state of the process is set to 'stopped' which causes all messages
; (except reset) to be answered immediately with status stopped.
; note: this driver cannot handle links with more than one operation.
m. flexible disc link
; entry point table:
h122: ; discette:
q0 ; after send message
q1 ; before header transmit
q2 ; after header transmit
q3 ; after header received
q4 ; after data received
q5 ; after creation
; definition of privat part of process description:
s0=p0 ; state
; state : 0 running
; 2 waiting for stop
; 4 stopped
\f
; fpa-subproc discette
; jr, 78.08.22
; after send message
;
; a new message has been received. check that user- or reservation
; status is ok and link message to queue of subproc.
; if state is stopped and if operation is not reset then
; deliver answer with status stopped.
; if operation is reset then state is changed to running.
; if the subproc is not busy, then link it to mainproc.
;
; upon entry: w1=subproc
b. i10,j10 w.
q0: ; after send message:
jl. w3 u4. ; check and link operation;
rl w3 x1+s0 ;
jl. x3+i0. ; goto case state of
i0: jl. u2. ; ( 0: testmore,
jl. j2. ; 2: exit0,
; 4: stopped);
j0: am (b18) ; stopped:
bz w0 +8 ;
se w0 2 ; if operation(mess)=reset then
jl. j1. ; state:=running;
al w0 0 ; goto testmore;
rs w0 x1+s0 ;
jl. u2. ;
j1: jl. w3 n0. ; deliver result(stopped);
j2: jl (b101) ; exit0: return;
e. ; end of after send message
\f
; fpa-subproc discette
; jr, 78.08.22
; before header
;
; a header (and maybe a corresponding datablock) is to be transmitted.
; find first non-processed message in queue of subproc and initialize
; transmit-parameters in mainproc.
;
; upon entry: w1=subproc
b. i10,j10 w.
q1: ; before header:
jl. w3 u20. ; test answer attention;
jl. w3 u12. ; mes:= first pending message;
sn w2 0 ; if mes=0 then
jl. u3. ; goto no block;
; message found.
bz w0 x2+8 ;
so w0 2.1 ; if odd operation then
jl. j0. ; examine sender(mess);
jl w3 g34 ; stopped: goto stopped;
jl. j1. ; ok:
j0: jl. w3 u30. ; prepare transfer;
bz w0 x2+8 ;
so w0 3 ; if operation=input then
jl (b101) ;
jl. w3 u21. ; test and increase stopcount;
-1 ; stopped: impossible (checked above(g34));
jl (b101) ; goto mainproc return;
j1: jl. w3 n1. ; stopped: check queue;
jl. u3. ; queue not empty: goto no block;
jl. w3 n2. ; queue empty: clean mess queue;
jl. u3. ; end: goto no block;
al w0 0 ; reset:
rs w0 x1+s0 ; state:=running;
jl. j0. ; goto prepare;
e. ; end of before header
\f
; fpa-subproc discette
; jr, 78.08.22
; after header and data transmitted
;
; entered by mainproc, when a header and a corresponding datablock
; (if any) has been transmitted.
; the result of the transmission is checked and if an error has
; occured, the message is returned with result=4 (receiver
; malfunction).
;
; finally the state of the subproc is checked for transmission of a
; new block.
b. i10,j10 w.
q2: jl. w3 u40. ; after header: test header transmitted
jl. u2. ; error: goto testmore
jl. u2. ; goto testmore
e. ; end of header and data transmitted
\f
; fpa-subproc discette
; jr, 78.08.22
; after header received
;
; a header has been received.
; for this kind of subprocs (with no special actions) it can
; only specify the functions <answer input with data> or
; <answer message with data>.
;
; upon entry: w1=subproc
b. i10,j10 w.
q3: jl. w3 u50. ; after header received: test answer header
jl. u2. ; goto testmore
e. ; end of after header received
\f
; fpa-subproc discette
; jr, 78.08.22
; after data received
;
; check transmission.
;
; upon entry: w1=subproc
b. i10,j10 w.
q4: jl. w3 u60. ; after data received: test data received
jl. u2. ; goto testmore
; attention. no special action
jl. u2. ; goto testmore
e. ; end of data received
\f
; fpa-subproc discette
; jr, 78.08.22
; after create
;
; the subproc has just been created.
; no special action
;
; upon entry: w1=subproc
b. i10,j10 w.
q5: ; after create:
jl (b101) ; goto return
e. ; end of after create
\f
; special procedures used in the discette driver.
; procedure deliver stopped answer.
; the message buffer defined in b18 is returned to the sender with
; status = stopped and bytes, chars transferred = 0, 0.
; call: return:
; w0 destroyed
; w1 proc
; w2 destroyed
; w3 link destroyed
b.w.
n0: al w0 1<8 ; deliver stopped answer:
rs w0 g20 ; status(answer):=stopped;
al w0 0 ; bytes trf(answer):=0;
rs w0 g21 ; chars trf(answer):=0;
rs w0 g22 ; deliver answer;
jl g18 ; exit: return to link;
e.
; procedure check queue.
; if the message entry table is empty (=> no operations under execution
; in the net) the message buffers in the event queue are returned with
; answer stopped until either the queue is empty or a reset operation is
; met.
; the procedure returnes to link+2 when the queue is emptied and a reset
; operation is found, else to link.
; by return the state is
; 0 event queue emptied and reset found
; 2 message entry table not empty
; 4 event queue emptied
; call: return:
; w0 destroyed
; w1 proc unchanged
; w2 destroyed
; w3 link destoyed
b.j4 w.
n1: al w0 0 ; check queue:
al w2 x1+p19 ;
j0: se w0 (x2) ; for entry:=first in entry table to last do
jl. j1. ; if entry used then
al w2 x2+2 ; goto not empty;
se w2 x1+p19+v0*2;
jl. j0. ;
am 4-2 ; empty: state:=stopped;
j1: al w2 2 ; not empty: state:=waiting for stop;
rs w2 x1+s0 ;
am x2-2 ;
jl x3 ; exit: return to link+state-2;
e.
; procedure clean mess queue.
b.i6,j6 w.
n2: rs. w3 i0. ; clean mess queue:
j0: jl. w3 u12. ; for mess:=first in mess queue until last do
sn w2 0 ; if operation(mess)=reset then
jl. (i0.) ; return to link+2;
bz w0 x2+8 ;
sn w0 2 ;
jl. j1. ;
jl. w3 n0. ;
jl. j0. ;
j1: am. (i0.) ;
jl +2 ;
i0: 0 ;
e.
e. ; end of discette driver.
z. ;
h122=h100
\f
; fpa-subproc character level i/o
; ncj, 02.01.1980
b. q20, s10
w.
; this code handles fpa i/o on character level and is used by fpa
; test programs.
; messages received must have the following format:
;
; +8: operation<12 + mode
; +10: first
; +12: last
; +14: characters
;
m. character level i/o link
; entry point table:
h124:
q0 ; after send message
q1 ; before header transmit
q2 ; after header transmit
q3 ; after header received
q4 ; after data received
q5 ; after creation
; no structure of private part of process description required
\f
; fpa-subproc character level i/o
; ncj, 2.01.1980
; after send message
;
; a new message has been received. check that user- or reservation
; status is ok and link message to queue of subproc.
; if the subproc is not busy, then link it to mainproc.
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q0: ; after send message:
jl. w3 u4. ; check and link operation
rl w2 b18 ; mes:= current message;
al w0 2 ; size:=
wa w0 x2+12 ; last(mes) - first(mes) + 2;
ws w0 x2+10 ;
jl. w3 u14. ; convert to 8bit(size);
ws w0 x2+14 ; rem:= size - chars(mes);
sl w0 0 ; if rem < 0 or
sl w0 3 ; rem > 2
jl. j0. ; then deliver result 3;
bz w0 x2+8 ; oper:= operation(mes);
se w0 3 ; if oper = input or
sn w0 5 ; oper = output
jl. u2. ; then goto testmore
j0: al w0 3 ; else deliver result 3;
jl w3 g19 ;
jl. u2. ; goto testmore;
e. ; end of after send message
\f
; fpa-subproc character level i/o
; ncj, 2.01.1980
; before header
;
; a header (and maybe a corresponding datablock) is to be transmitted.
; find first non-processed message in queue of subproc and initialize
; transmit-parameters in mainproc.
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q1: ; before header:
jl. w3 u20. ; test answer attention
jl. w3 u12. ; w2:=mes:= first pending message
sn w2 0 ; if mes=0 then
jl. u3. ; goto no block.
; message found. initiate transfer
jl. w3 u30. ; prepare transfer
rl w3 x1+a50 ; main:= main(subproc);
rl w0 x2+14 ; chars:= chars(mess);
sl w0 (x3+p64) ; if chars < header size(main) then
jl. j0. ; begin
rs w0 x3+p64 ; header size(main):= chars;
rs w0 x2+20 ; expected size(mes):= chars;
bz w1 x2+8 ; oper:= operation(mes);
sn w1 5 ; if oper = output
rs w0 x3+p66 ; then data size(main):= chars;
jl. j1. ; end
j0: ws w0 x3+p64 ; else
rs w0 x2+14 ; chars(mess):= chars - header size(main);
j1: jl (b101) ; goto mainproc return;
e. ; end of before header
\f
; fpa-subproc character level i/o
; ncj, 2.01.1980
; after header and data transmitted
;
; entered by mainproc, when a header and a corresponding datablock
; (if any) has been transmitted.
; the result of the transmission is checked and if an error has
; occured, the message is returned with result=4 (receiver
; malfunction).
;
; finally the state of the subproc is checked for transmission of a
; new block.
b. i10, j10
w.
q2: jl. w3 u40. ; after header: test header transmitted
jl. u2. ; error: goto testmore
jl. u2. ; goto testmore
e. ; end of header and data transmitted
\f
; fpa-subproc character level i/o
; ncj, 2.01.1980
; after header received
;
; a header has been received.
; for this kind of subprocs (with no special actions) it can
; only specify the functions <answer input with data> or
; <answer message with data>.
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q3: jl. w3 u50. ; after header received: test answer header
jl. u2. ; goto testmore
e. ; end of after header received
\f
; fpa-subproc character level i/o
; ncj, 2.01.1980
; after data received
;
; check transmission.
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q4: jl. w3 u60. ; after data received: test data received
jl. u2. ; goto testmore
; attention. no special action
jl. u2. ; goto testmore
e. ; end of data received
\f
; fpa-subproc character level i/o
; ncj, 2.01.1980
; after create
;
; the subproc has just been created.
; no special action
;
; upon entry:
; w0
; w1 subproc
; w2
; w3
b. i10, j10
w.
q5: ; after create:
jl (b101) ; goto return
e. ; end of after create
e. ; end of character level i/o
; end of subprocess-code
;***********************
e.
; end of fpa-driver code
;***********************
e.
\f
▶EOF◀