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Length: 28672 (0x7000)
Types: TextFile
Names: »KERNEL.SL5«
└─⟦c50ca4728⟧ Bits:30003533 StackWorks FORTH version 1.2 for Z-80
└─ ⟦this⟧ »KERNEL.SL5«
( Copyright 1980 The Stackworks. All rights reserved )
( Z80 VERSION 1.2 - CP/M )
( 3/25/80 )
CODE $$PUSH HL PUSH EXX (HL) C LD HL INC (HL) B LD
HL INC BC PUSH EXX RET EDOC
CODE $CONSTANT HL POP (HL) E LD HL INC (HL) D LD
DE PUSH $NEXT JP EDOC
CODE $BARRAY HL POP (HL) E LD HL INC (HL) D LD HL POP
DE HL ADD $PUSH JP EDOC
CODE $ARRAY HL POP (HL) E LD HL INC (HL) D LD HL POP
HL HL ADD DE HL ADD $PUSH JP EDOC
( ==================================================================== )
( CONDITIONAL COMPILATION CONSTANTS )
1 XCONSTANT ?FILESYS ( COMPILE FILE SYSTEM SECTION )
0 XCONSTANT ?OWNIO ( COMPILE USER I/O SECTION )
1 XCONSTANT ?CRT ( COMPILE CRT I/O WORDS )
1 XCONSTANT ?INTERP ( COMPILE INTERPRETER SECTION )
1 XCONSTANT ?COMPILE ( COMPILE THE COMPILER SECTION )
( NOTES: Æ1Å CRT SECTION NEEDS OWNIO OR FILESYS )
( Æ2Å INTERPRETER NEEDS CRT SECTION )
( Æ3Å COMPILER NEEDS INTERPRETER TO RUN. )
( Æ4Å DO NOT COMPILE BOTH OWNIO AND FILE SYSTEM. )
( ==================================================================== )
( VARIABLES & CONSTANTS )
0 VARIABLE DP 0 VARIABLE CURRENT
0 VARIABLE CONTEXT 0 VARIABLE CVOC
6580 VARIABLE SYMTP 0 VARIABLE SYMPTR
0 VARIABLE RESTARTAD 0 VARIABLE GOQIAD
0 VARIABLE D/0AD
0 VARIABLE STATE 10 VARIABLE BASE
1 VARIABLE UPPER
20 VARIABLE DELIMITER
07F VARIABLE INFOF 0 VARIABLE FLAGS
0 VARIABLE DEPTH
100 CONSTANT SSIZE 100 CONSTANT RSIZE
( STACKS & BUFFERS )
SSIZE 10 + BARRAY STACK RSIZE 10 + BARRAY RSTACK
CODE LIT EXX (HL) C LD HL INC (HL) B LD HL INC BC PUSH
$NEXTHL JP EDOC
CODE $SET HL POP (HL) E LD HL INC (HL) D LD HL INC
(HL) A LD A (DE) LD HL INC DE INC
(HL) A LD A (DE) LD $NEXT JP EDOC
CODE $FMAKE $NEXT JP EDOC
CODE $: EXX HL DE EX HL DEC D (HL) LD HL DEC E (HL) LD
HL DE EX HL POP $NEXTHL JP EDOC
CODE $; EXX HL DE EX (HL) E LD HL INC (HL) D LD HL INC
HL DE EX $NEXTHL JP EDOC
( ARITHMETIC OPERATIONS )
CODE + BC POP HL POP BC HL ADD $PUSH JP EDOC
CODE - BC POP HL POP A AND BC HL SBC $PUSH JP EDOC
CODE ø BC POP HL POP C A LD L OR A L LD B A LD H OR
A H LD $PUSH JP EDOC
CODE & BC POP HL POP C A LD L AND A L LD B A LD H AND
A H LD $PUSH JP EDOC
CODE Xø BC POP HL POP C A LD L XOR A L LD B A LD H XOR
A H LD $PUSH JP EDOC
CODE 1+ HL POP HL INC $PUSH JP EDOC
CODE 1- HL POP HL DEC $PUSH JP EDOC
CODE MINUS DE POP 0 HL LD A AND DE HL SBC $PUSH JP EDOC
( MEMORY OPERATIONS )
CODE ! HL POP BC POP C (HL) LD HL INC B (HL) LD $NEXT JP EDOC
CODE @ HL POP (HL) E LD HL INC (HL) D LD HL DE EX $PUSH JP EDOC
CODE B@ HL POP (HL) L LD 0 H LD $PUSH JP EDOC
CODE B! HL POP BC POP C (HL) LD $NEXT JP EDOC
CODE +! HL POP BC POP (HL) E LD HL INC (HL) D LD HL DE EX
BC HL ADD HL DE EX D (HL) LD HL DEC E (HL) LD
$NEXT JP EDOC
CODE 1+! HL POP (HL) C LD HL INC (HL) B LD BC INC
B (HL) LD HL DEC C (HL) LD $NEXT JP EDOC
CODE 1-! HL POP (HL) C LD HL INC (HL) B LD BC DEC
B (HL) LD HL DEC C (HL) LD $NEXT JP EDOC
( STACK MANIPULATIONS )
CODE DROP HL POP $NEXT JP EDOC
CODE DUP HL POP HL PUSH $PUSH JP EDOC
CODE OVER BC POP HL POP HL PUSH BC PUSH $PUSH JP EDOC
CODE R> EXX HL DE EX (HL) C LD HL INC (HL) B LD HL INC
BC PUSH HL DE EX $NEXTHL JP EDOC
CODE >R EXX BC POP HL DE EX HL DEC B (HL) LD HL DEC
C (HL) LD HL DE EX $NEXTHL JP EDOC
CODE SWAP HL POP HL (SP) EX $PUSH JP EDOC
CODE ROT BC POP DE POP HL POP DE PUSH BC PUSH $PUSH JP EDOC
CODE 2DROP HL POP BC POP $NEXT JP EDOC
CODE 2DUP HL POP BC POP BC PUSH HL PUSH BC PUSH $PUSH JP EDOC
CODE 2SWAP BC POP DE POP HL POP IX POP DE PUSH BC PUSH
IX PUSH $PUSH JP EDOC
CODE ROLL BC POP C A LD 0 HL LD SP HL ADD HL INC
DE POP A DEC NZ IF,
BEGIN,
HL INC (HL) C LD E (HL) LD
HL INC (HL) B LD D (HL) LD
B D LD C E LD A DEC
Z END,
ENDIF, DE PUSH $NEXT JP EDOC
CODE -ROLL HL POP 0 H LD L A LD HL HL ADD SP HL ADD
HL DEC DE POP A DEC NZ IF,
BEGIN,
(HL) B LD D (HL) LD HL DEC
(HL) C LD E (HL) LD HL DEC
B D LD C E LD A DEC
Z END,
ENDIF, DE PUSH $NEXT JP EDOC
CODE SP@ 0 HL LD SP HL ADD $PUSH JP EDOC
CODE SP! HL POP HL SP LD $NEXT JP EDOC
CODE RP@ EXX DE PUSH $NEXTHL JP EDOC
CODE RP! EXX DE POP $NEXTHL JP EDOC
CODE PICK HL POP HL DEC HL HL ADD SP HL ADD
(HL) C LD HL INC (HL) B LD BC PUSH
$NEXT JP EDOC
( MISC. WORDS )
: HERE DP @ ;
: DP+! DP +! ;
: COUNT DUP 1+ SWAP B@ ;
CODE GO HL POP (HL) JP EDOC
: GO-OPSYS 0 GO ;
CODE BSWAP HL POP L A LD H L LD A H LD $PUSH JP
CODE ->L BC POP HL POP C A LD A OR NZ IF,
BEGIN,
H SRL L RR C DEC
Z END,
ENDIF, $PUSH JP EDOC
CODE <-L BC POP HL POP C A LD A OR NZ IF,
BEGIN,
L SLA H RL C DEC
Z END,
ENDIF, $PUSH JP EDOC
CODE $BMOVE BC POP DE POP HL POP LDIR $NEXT JP EDOC
CODE $RMOVE BC POP DE POP HL POP LDDR $NEXT JP EDOC
( HIGH LEVEL CONDITION SETTINGS )
CODE 0= BC POP C A LD B OR 0 HL LD Z IF, HL INC ENDIF,
$PUSH JP EDOC
CODE 0< BC POP B 7 BIT 0 HL LD NZ IF, HL INC ENDIF,
$PUSH JP EDOC
CODE 0> BC POP B 7 BIT 0 HL LD Z IF, C A LD B OR NZ IF,
HL INC ENDIF, ENDIF, $PUSH JP EDOC
: NOT 0= ;
: = - 0= ; : <> - 0= 0= ; : < - 0< ; : > - 0> ;
: <= - 0> 0= ; : >= - 0< 0= ;
CODE U< BC POP HL POP A AND BC HL SBC 0 HL LD C IF,
HL INC ENDIF, $PUSH JP EDOC
: U> SWAP U< ; : U>= U< 0= ; : U<= U> 0= ;
( CONDITIONAL BASICS )
CODE $IF BC POP C A LD B OR EXX Z IF, (HL) C LD HL INC
(HL) H LD C L LD $NEXTHL JP ENDIF, HL INC
HL INC $NEXTHL JP EDOC
CODE $ELSE EXX (HL) C LD HL INC (HL) H LD C L LD $NEXTHL JP EDOC
( DO LOOPS - $DO, $+LOOP, EXIT, I, J, K )
CODE $DO EXX BC POP HL (SP) EX HL DE EX HL DEC
D (HL) LD HL DEC E (HL) LD HL DEC B (HL) LD
HL DEC C (HL) LD DE POP HL DE EX $NEXTHL JP EDOC
CODE $+LOOP EXX BC POP HL PUSH DE PUSH 0 HL LD SP HL ADD
HL DE EX HL SP LD HL POP BC HL ADD BC POP
BC PUSH HL PUSH A AND BC HL SBC HL DE EX
HL SP LD DE POP HL POP C IF,
(HL) A LD HL INC (HL) H LD A L LD $NEXTHL JP
ENDIF, DE INC DE INC DE INC DE INC HL INC
HL INC $NEXTHL JP EDOC
CODE EXIT EXX HL DE EX HL INC HL INC (HL) C LD HL INC
(HL) B LD HL DEC HL DEC B (HL) LD HL DEC
C (HL) LD HL DE EX $NEXTHL JP EDOC
CODE I EXX 0 BC LD HERE HL DE EX HL PUSH
BC HL ADD (HL) C LD HL INC (HL) B LD HL POP
BC PUSH HL DE EX $NEXTHL JP EDOC
CODE J EXX 4 BC LD DUP JP EDOC
CODE K EXX 8 BC LD JP EDOC
( MORE ARITHMETIC OPERATIONS )
: ABS DUP 0< IF
MINUS
ENDIF ;
: COM FFFF Xø ;
: -- SWAP - ;
: MIN 2DUP > IF SWAP ENDIF DROP ;
: MAX 2DUP < IF SWAP ENDIF DROP ;
: @X @ BSWAP ;
CODE * 0 HL LD BC POP DE POP BEGIN, B SRL C RR C IF,
DE HL ADD ENDIF, HL DE EX HL HL ADD HL DE EX
C A LD B OR Z END, $PUSH JP EDOC
CODE U/MOD HL POP DE POP 0 BC LD BC PUSH L A LD H OR
Z IF, D/0AD ^ HL LD (HL) JP ENDIF, SCF
BEGIN, C RL B RL HL HL ADD C END, H RR
L RR BEGIN, E A LD D OR NZ IF, HL PUSH
SCF DE HL SBC HL POP C IF, HL (SP) EX
BC HL ADD HL (SP) EX
HL DE EX A AND DE HL SBC HL DE EX ENDIF,
H SRL L RR B SRL C RR ELSE, SCF ENDIF,
C END, HL POP DE PUSH $PUSH JP EDOC
: /MOD OVER 0< OVER 0< OVER Xø 2SWAP
SWAP ABS SWAP ABS U/MOD ROT IF
MINUS
ENDIF ROT IF
SWAP MINUS SWAP
ENDIF ;
: / /MOD SWAP DROP ;
: MOD /MOD DROP ;
( ZIN, ZOUT - Z80 VERSION ONLY )
CODE ZIN BC POP (C) L IN 0 H LD $PUSH JP EDOC
CODE ZOUT BC POP HL POP L (C) OUT $NEXT JP EDOC
( BASIC CASE WORDS )
: $CASE R> DUP 2 + SWAP @ >R >R ;
: $=: OVER = IF
DROP R> 2 + >R
ELSE R> @ >R
ENDIF ;
: $;; R> DROP ;
: NOCASE DUP ;
( $;CODE ;: )
: $:;CODE R> CURRENT @ @ SYMTP @ + 3 + @ 1+ ! ;
: $VOCAB @ DUP CVOC ! @ CONTEXT ! ;
BASEVOCAB FORTH
FORTH DEFINITIONS
( BMOVE, RMOVE, FILL )
: BMOVE DUP IF $BMOVE ELSE DROP 2DROP ENDIF ;
: RMOVE DUP IF SWAP OVER 1- + SWAP ROT OVER 1- + ROT ROT $RMOVE
ELSE DROP 2DROP ENDIF ;
: FILL 3 PICK IF
OVER B! DUP 1+ ROT 1- BMOVE
ELSE 2DROP DROP
ENDIF ;
: BLANK 20 FILL ;
( ==================================================================== )
( FILE SYSTEM SECTION )
( ==================================================================== )
?FILESYS IFTRUE
0 VARIABLE OP-VER# ( CONTAINS CP/M VERSION NUMBER, SET BY ININIT )
( CHARACTER LEVEL INTERFACES TO CP/M )
CODE CALLCPM BC POP DE POP 05 CALL B H LD A L LD
$PUSH JP EDOC
: CIN 1 DUP CALLCPM DUP 3 = IF
GO-OPSYS ( CTRL-C )
ELSE DUP 12 = IF
RESTARTAD @ GO ( CTRL-R )
ELSE DUP 13 = IF
DROP RECURSE ( CTRL-S )
ENDIF
ENDIF
ENDIF ;
: CIS 0B DUP CALLCPM IF
CIN DROP
ENDIF ;
: COUT CIS 2 CALLCPM DROP ;
( CTYPE, $C" )
: CTYPE DUP IF
0 DO
DUP B@ COUT 1+
LOOP DROP
ELSE 2DROP
ENDIF ;
: $C" R> DUP B@ SWAP 1+ SWAP 2DUP + >R CTYPE ;
( FILE INTERFACES )
80 CONSTANT BUFSIZE
1A CONSTANT EOFCHR
: FFLAGS @ ;
: BUFP @ 1+ ;
: BUFLEN @ 3 + ;
: SCHAN# @ 5 + ;
: BUFAD 2 + @ ;
: FCB 4 + @ ;
: FFLAGS@& OVER FFLAGS B@ & ;
: FFLAGSø! OVER FFLAGS B@ ø OVER FFLAGS B! ;
: SERIAL 80 FFLAGS@& ;
: SHOW-FNAME SERIAL IF
SCHAN# @ IF
C" #LST"
ELSE C" #CRT"
ENDIF
ELSE FCB DUP 1+ 8 CTYPE C" ." 9 + 3 CTYPE
ENDIF ;
: FERRS 0D COUT 0A COUT CASE
2 =: C" READ PAST EOF." ;;
3 =: C" FILE NOT OPENED FOR READING." ;;
4 =: C" FILE NOT OPENED FOR WRITING." ;;
5 =: C" FILE DOESN'T EXIST." ;;
6 =: C" DISK WRITE ERROR." ;;
7 =: C" FILE CAN'T BE CREATED." ;;
CASEND C" " SHOW-FNAME 0D COUT 0A COUT RESTARTAD @ GO ;
: EOF FFLAGS B@ 1 & ;
: RESET 0FE FFLAGS@& OVER FFLAGS B!
0 OVER 2DUP BUFLEN ! BUFP !
FCB 0 OVER 0C + B! 4 SWAP 20 + 0 FILL ;
: FRES DUP RESET DUP FFLAGS DUP B@ 80 & SWAP B! ;
: BUFADSET 1A CALLCPM DROP ;
: CLOSE SERIAL NOT IF
DUP FCB 10 CALLCPM DROP
ENDIF FRES DROP ;
: DELETE SERIAL NOT IF
DUP FCB 13 CALLCPM DROP
ENDIF FRES DROP ;
: OPENR FRES SERIAL NOT IF
DUP FCB 0F CALLCPM 0FF = IF
5 FERRS ( NON EXISTANT FILE )
ENDIF
ENDIF 2 FFLAGSø! DROP ;
: OPENW FRES SERIAL NOT IF
DUP DELETE DUP FCB 16 CALLCPM 0FF = IF
7 FERRS ( FILE CAN'T BE CREATED )
ENDIF
ENDIF 4 FFLAGSø! DROP ;
: RENAME SWAP SERIAL ROT SERIAL ROT ø IF
2DROP
ELSE FCB 1+ OVER FCB 11 + 0B $BMOVE FCB 17 CALLCPM DROP
ENDIF ;
: READ 2 FFLAGS@& IF
1 FFLAGS@& IF
2 FERRS ( READ PAST EOF )
ELSE SERIAL IF
0 OVER BUFAD " > COUT BEGIN
CIN DUP 0D = IF
DROP 1
ELSE DUP 1B = IF
2DROP DROP 0 OVER BUFAD ( ESCAPE )
C" *ESC*" 0D COUT 0A COUT
ELSE DUP 08 = IF
DROP OVER IF ( CTRL-H )
1- SWAP 1- SWAP OP-VER# @ 20 < IF
08 COUT
ENDIF
ENDIF
ELSE OVER B! 1+ SWAP 1+ SWAP
ENDIF
ENDIF 0
ENDIF 3 PICK BUFSIZE 2 - U>= ø
END 0D OVER B! 1+ 0A SWAP B! 2 + OVER BUFLEN ! 0A COUT
ELSE DUP BUFAD BUFADSET DUP FCB 14 CALLCPM
80 BUFADSET IF
1 FFLAGSø! 0 ( EOF )
ELSE BUFSIZE
ENDIF OVER BUFLEN !
ENDIF 0 SWAP BUFP !
ENDIF
ELSE 3 FERRS ( NOT OPENED FOR READING )
ENDIF ;
: WRITE 4 FFLAGS@& IF
SERIAL IF
DUP SCHAN# @ IF
5
ELSE 2
ENDIF OVER BUFAD ROT BUFP DUP @ 0 ROT ! 0 DO
2DUP B@ 7F & SWAP CALLCPM DROP 1+
LOOP 2DROP
ELSE DUP BUFAD BUFADSET DUP FCB 15 CALLCPM 80 BUFADSET IF
6 FERRS ( WRITE ERRORS )
ELSE 0 SWAP BUFP !
ENDIF
ENDIF
ELSE 4 FERRS ( NOT OPENED FOR WRITING )
ENDIF ;
: FLUSH DUP BUFP @ IF
WRITE
ELSE DROP
ENDIF ;
: RBYTE CIS 2 FFLAGS@& IF
DUP BUFP @ OVER BUFLEN @ U>= IF
DUP READ DUP EOF IF ( BUFFER EMPTY )
DROP EOFCHR
ELSE RECURSE
ENDIF
ELSE DUP BUFP DUP @ SWAP 1+! SWAP BUFAD + B@
ENDIF
ELSE 3 FERRS ( NOT OPENED FOR READING )
ENDIF ;
: RCH DUP EOF IF
2 FERRS ( READ PAST EOF )
ELSE DUP RBYTE 7F & SWAP OVER EOFCHR = IF
1 FFLAGSø! ( EOF )
ENDIF DROP
ENDIF ;
: WBYTE CIS 4 FFLAGS@& IF
SERIAL IF
SCHAN# @ IF
5 ( PRINTER )
ELSE 2
ENDIF CALLCPM DROP ( DO SERIAL OUTPUT DIRECTLY )
ELSE SWAP OVER DUP BUFP @ SWAP BUFAD + B!
DUP BUFP DUP 1+! @ BUFSIZE = IF
WRITE ( BUFFER FULL )
ELSE DROP
ENDIF
ENDIF
ELSE 4 FERRS ( NOT OPENED FOR WRITING )
ENDIF ;
: WCH SWAP 7F & SWAP WBYTE ;
FALLOC INFILE
FALLOC OUTFILE
: GCH INFILE RCH ;
: TCH OUTFILE WCH ;
0 VARIABLE ECHFIB^
: UGCH GCH DUP 5F > OVER 7B < & UPPER @ & IF
20 -
ENDIF INFILE SERIAL NOT INFOF @ 4 & NOT NOT & IF
OVER TCH
ENDIF DROP INFOF @ 80 & IF
DUP ECHFIB^ @ WCH ( echo onto echfib if bit 7 set )
ENDIF DUP 09 = IF
DROP 20
ENDIF ;
: ININIT 80 INFILE FFLAGS B! 0 INFILE SCHAN# ! INFILE OPENR
0 0C CALLCPM OP-VER# ! ;
: OUTINIT 80 OUTFILE FFLAGS B! 0 OUTFILE SCHAN# ! OUTFILE OPENW ;
IFEND
( ==================================================================== )
( END FILE SYSTEM SECTION )
( ==================================================================== )
( ==================================================================== )
( OWNIO SECTION )
( ==================================================================== )
?OWNIO IFTRUE
80 BARRAY TBUFF
0 VARIABLE TBUFP
0 VARIABLE BUFSIZE
: COUT BEGIN
0ED ZIN 1 &
END 0EC ZOUT ;
: CIN BEGIN
0ED ZIN 2 &
END 0EC ZIN 7F & DUP COUT ;
: CIS ;
( CTYPE, $C" )
: CTYPE DUP IF
0 DO
DUP B@ COUT 1+
LOOP DROP
ELSE 2DROP
ENDIF ;
: $C" R> DUP B@ SWAP 1+ SWAP 2DUP + >R CTYPE ;
: TCH COUT ;
: TGET " > COUT 0 TBUFP ! BEGIN
CIN DUP TBUFP @ TBUFF B! CASE
0D =: TBUFP 1+! 0A COUT 1 ;; ( CR )
1B =: C" *ESC*" 0D COUT 0A COUT 0 TBUFP ! 0 ;; ( ESC )
08 =: TBUFP @ IF ( BS )
TBUFP 1-!
ENDIF 0 ;;
NOCASE =: TBUFP 1+! 0 ;;
CASEND
END TBUFP @ BUFSIZE ! 0 TBUFP ! ;
: GCH TBUFP @ BUFSIZE @ >= IF
TGET RECURSE
ELSE TBUFP @ TBUFF B@ TBUFP 1+!
ENDIF ;
: UGCH GCH ;
: OUTINIT ;
: ININIT 0 TBUFP ! 0 BUFSIZE ! ;
IFEND
( ==================================================================== )
( END OWNIO SECTION )
( ==================================================================== )
( ==================================================================== )
( ==================================================================== )
?FILESYS NOT ?OWNIO NOT & IFTRUE
: ININIT ;
: OUTINIT ;
IFEND
( ==================================================================== )
( ==================================================================== )
( RESTART )
: $RESTART 0 STATE ! 0 FLAGS ! ININIT OUTINIT GOQIAD @ GO ;
CODE RESTART SSIZE STACK SP LD RSIZE RSTACK DE LD EXX
'B $RESTART JP EDOC
'B RESTART RESTARTAD T!
( ==================================================================== )
( CRT I/O SECTION )
( ==================================================================== )
?CRT IFTRUE
( TYPE, $T" )
: TYPE DUP IF
0 DO
DUP B@ TCH 1+
LOOP DROP
ELSE 2DROP
ENDIF ;
: $T" R> DUP B@ SWAP 1+ SWAP 2DUP + >R TYPE ;
( CRIGHT - COPYRIGHT NOTICE )
: CRIGHT T" (c) Copyright 1980 The Stackworks " ;
( ABORTS )
: ABORT T" ABORT " RESTART ;
: PNAME HERE 1+ HERE B@ TYPE ;
: UNDEFINED 0D TCH 0A TCH PNAME T" ? " RESTART ;
: D/0 T" D/0 " ABORT ; 'B D/0 D/0AD T!
( STACK CHECK )
: CHECK SP@ 100 STACK U> IF
T" STACK UNDERFLOW" ABORT
ELSE RP@ 100 RSTACK U> IF
T" RETURN STACK UNDERFLOW" ABORT
ENDIF
ENDIF ;
( OUTPUT WORDS )
: SPACE 20 TCH ;
: SPACES DUP IF
DUP 0 DO
SPACE
LOOP
ENDIF DROP ;
: CR 0D TCH 0A TCH ;
: NASCII DUP 9 > IF
7 +
ENDIF 30 + ;
: . >R CHECK R> DUP 0< IF
MINUS T" -"
ENDIF 0 BEGIN
1+ SWAP BASE @ U/MOD ROT OVER 0=
END SWAP DO
NASCII TCH
LOOP SPACE ;
: ? @ . ;
: .HEX >R >R CHECK R> R> DUP 0 DO
SWAP 10 U/MOD ROT
LOOP SWAP DROP 0 DO
NASCII TCH
LOOP SPACE ;
: X. 4 .HEX ;
: B. 2 .HEX ;
( ==================================================================== )
OTHERWISE
: D/0 RESTART ; 'B D/0 D/0AD T!
IFEND
( ==================================================================== )
( END OF CRT I/O SECTION )
( ==================================================================== )
( ==================================================================== )
( INTERPRETER SECTION )
( ==================================================================== )
?INTERP IFTRUE
( BASE CONVERSION WORDS )
: DECIMAL 0A BASE ! ;
: HEX 10 BASE ! ;
: OCTAL 8 BASE ! ;
( , B, )
: , HERE ! 2 DP+! SYMPTR @ HERE U<= IF
T" D>S " ABORT
ENDIF ;
: B, HERE B! 1 DP+! SYMPTR @ HERE U<= IF
T" D>S " ABORT
ENDIF ;
( EXECUTE, LITERAL, LINK )
: EXECUTE DUP 3 + @ SWAP B@ 80 & STATE @ NOT ø IF
GO
ELSE ,
ENDIF ;
: LITERAL STATE @ IF
'B LIT , ,
ENDIF ;
: LINK SYMPTR @ HERE B@ 1+ - HERE OVER HERE B@ 1+ $BMOVE
2 - SWAP OVER ! 2 - CONTEXT @ OVER ! 1- 0 OVER B!
DUP SYMPTR ! SYMTP @ - CURRENT @ ! ;
( WORD - PARSE OUT A WORD FROM THE INPUT STREAM )
: DELIM= DUP DELIMITER @ = OVER 0A = ø OVER 0D = ø ;
: WORD HERE 1+ DUP BEGIN
DROP UGCH DELIM= NOT
END BEGIN
OVER B! 1+ UGCH DELIM=
END DROP HERE - 1- HERE B! 20 DELIMITER ! ;
( FIND )
CODE S= 5 DE LD DE HL ADD
(BC) A LD A E LD E INC BEGIN,
(BC) A LD (HL) CP NZ RET
HL INC BC INC E DEC Z END, RET EDOC
CODE FIND1 BC POP HL POP BEGIN,
DE POP DE PUSH DE HL ADD HL PUSH BC PUSH 'B S= CALL
BC POP HL POP Z IF, ( FOUND ) HL (SP) EX 1 HL LD
$PUSH JP ENDIF, HL INC (HL) E LD
HL INC (HL) D LD D A LD E OR Z IF, ( END OF VOCAB )
HL INC (HL) E LD HL INC (HL) D LD HL DE EX
H A LD L OR DE POP $PUSH Z JP ( END OF DICT. )
DE PUSH (HL) E LD HL INC (HL) D LD
ENDIF, HL DE EX REPEAT, EDOC
: FIND SYMTP @ CONTEXT @ HERE FIND1 ;
: NUMBER HERE B@ HERE 1+ DUP B@ 2D = IF
1+ SWAP 1- SWAP -1
ELSE 1
ENDIF 0 2SWAP SWAP 0 SWAP 0 DO
DROP DUP B@ DUP 39 > IF
DUP 40 > IF
7 -
ELSE DROP 80
ENDIF
ENDIF 30 - DUP BASE @ U< IF
ROT BASE @ * + SWAP 1+ 1
ELSE 2DROP 2DROP 0 EXIT
ENDIF
LOOP DUP IF
2DROP * 1
ENDIF ;
( INTRLP - THE MAIN LOOP FOR THE OUTER INTERPETER )
: INTRLP BEGIN
WORD FIND IF
EXECUTE
ELSE NUMBER IF
LITERAL
ELSE UNDEFINED
ENDIF
ENDIF 0
END ;
'B INTRLP GOQIAD T!
: $'B WORD FIND IF
3 + @
ELSE UNDEFINED
ENDIF ;
: 'B $'B LITERAL ;
IMP 'B
: $'S R> DUP 2 + >R @ SYMTP @ + ;
: 'S WORD FIND IF
STATE @ IF
'B $'S , SYMTP @ - ,
ELSE LITERAL
ENDIF
ELSE UNDEFINED
ENDIF ;
: ' WORD FIND IF
3 + @ 3 + LITERAL
ELSE UNDEFINED
ENDIF ;
IFEND
( ==================================================================== )
( END OF INTERPRETER SECTION )
( ==================================================================== )
( ==================================================================== )
( COMPILER SECTION )
( ==================================================================== )
?COMPILE IFTRUE
( C", T" )
: C" 22 DELIMITER ! STATE @ IF
'B $C" , WORD HERE B@ 1+ DP+!
ELSE WORD HERE 1+ HERE B@ CTYPE
ENDIF ;
IMP C"
: T" 22 DELIMITER ! STATE @ IF
'B $T" , WORD HERE B@ 1+ DP+!
ELSE WORD PNAME
ENDIF ;
IMP T"
: DC DEPTH @ IF
CR CR T" UNBALANCED NESTING" ABORT
ENDIF ;
( CUR@@CON!, $CODE, CONSTANT, VARIABLE, :, ;, ;: )
: CUR@@CON! CURRENT @ @ CONTEXT ! ;
: $CODE CUR@@CON! WORD INFOF @ 1 & IF
FIND IF
DROP T" REDEF " PNAME 0D TCH 0A TCH
ENDIF
ENDIF HERE LINK ;
: CONSTANT $CODE 0CD B, 'B $CONSTANT , , CUR@@CON! ;
: VARIABLE HERE 5 + CONSTANT , ;
: : 1 STATE ! $CODE 0CD B, 'B $: , 0 DEPTH ! ;
: ; CUR@@CON! 0 STATE ! 'B $; , DC ; IMP ;
: ;: 'B $:;CODE , 0CD B, 'B $: , DC ; IMP ;:
( CONDITIONAL BRANCHING )
: IF 'B $IF , HERE DUP 2 + , DEPTH 1+! ;
: ELSE HERE 4 + SWAP ! 'B $ELSE , HERE DUP 2 + , ;
: ENDIF HERE SWAP ! DEPTH 1-! ;
IMP IF IMP ELSE IMP ENDIF
: BEGIN HERE DEPTH 1+! ;
: END 'B $IF , , DEPTH 1-! ;
IMP BEGIN IMP END
: DO 'B $DO , HERE DEPTH 1+! ;
: +LOOP 'B $+LOOP , , DEPTH 1-! ;
: LOOP 1 LITERAL +LOOP ;
IMP DO IMP +LOOP IMP LOOP
: COMPILE $'B , ;
: IMP 'S DUP B@ 80 ø SWAP B! ;
: IMMEDIATE 80 SYMPTR @ B! ;
IMP 'S IMP ' IMP COMPILE
: Æ 0 STATE ! ; IMP Æ
: Å 1 STATE ! ; IMP Å
: ( 29 DELIMITER ! WORD ; IMP (
( DATA STRUCTURE CONSTRUCTIONS )
: ARRAY HERE 5 + CONSTANT DUP + DP+! ;: @ OVER + + ;
: BARRAY HERE 5 + CONSTANT DP+! ;: @ + ;
: SET CONSTANT , ;: DUP 2 + @ SWAP @ ! ;
( VOCABULARY WORDS )
: VLIST CONTEXT @ BEGIN
SYMTP @ + DUP 3 + @ X. SPACE DUP B@ B. SPACE DUP 5 +
DUP B@ DUP . SWAP 1+ SWAP TYPE CR 1+ @ DUP 0=
END DROP ;
: $FORGET DUP 3 + @ DP ! DUP 1+ @ CURRENT @ ! CUR@@CON!
5 + COUNT + SYMPTR ! ;
: FORGET COMPILE 'S 'S $FORGET EXECUTE ;
IMP FORGET
: VOCABULARY SYMPTR @ 6 - DUP SYMPTR ! 6 OVER 0 FILL
CURRENT @ OVER 3 + ! SYMTP @ - VARIABLE ;: @ DUP CVOC ! @ CONTEXT ! ;
: DEFINITIONS CVOC @ CURRENT ! ;
( PROGRAM CONTROL CONSTRUCTIONS )
: WHILE COMPILE IF DEPTH 1-! ;
: REPEAT 'B $ELSE , SWAP , HERE SWAP ! DEPTH 1-! ;
IMP WHILE IMP REPEAT
: RECURSE CURRENT @ @ SYMTP @ + 3 + @ , ;
IMP RECURSE
( CASE )
: CASE 'B $CASE , HERE 0 , DEPTH 1+! ;
: =: 'B $=: , HERE 0 , ;
: ;; 'B $;; , HERE SWAP ! ;
: CASEND 'B R> , 'B 2DROP , HERE SWAP ! DEPTH 1-! ;
IMP CASE IMP =: IMP ;; IMP CASEND
: " WORD HERE 1+ B@ LITERAL ; IMP "
( ASSEMBLER BASICS - CODE, ;CODE, EDOC, $PUSH, $NEXT )
VOCABULARY ASSEMBLER
: CODE $CODE ASSEMBLER ;
: ;CODE ' $:;CODE , 0 STATE ! ASSEMBLER ;
IMP ;CODE
ASSEMBLER DEFINITIONS
: EDOC CUR@@CON! ;
: $PUSH 'B $$PUSH ;
: $NEXT $PUSH 1+ ;
: $NEXTHL $NEXT 1+ ;
FORTH DEFINITIONS
IFEND
( ==================================================================== )
( END OF COMPILER SECTION )
( ==================================================================== )
( ==================================================================== )
( COMPILER/FILE SYSTEM SECTION )
( ==================================================================== )
?FILESYS ?COMPILE & IFTRUE
( MORE FILE RELETED WORDS )
: FALLOC HERE 9 + CONSTANT HERE 0B + , HERE 89 + , 0 B,
0 , 0 , 0 , A4 DP+! ;: ;
( NAMIT - FIB^ NAMIT FILENAME -- NAME THE FILE ASSOCIATED WITH FIB^ )
0 VARIABLE WPTR
0 VARIABLE WLN
: GCHR WLN @ IF
WPTR 1+! WLN 1-! WPTR @ B@ 1
ELSE 0
ENDIF ;
: $NAMIT DUP FCB 0C OVER BLANK 0 OVER B! 0 9 ROT GCHR DROP GCHR IF
DUP " : = IF
DROP 40 - OVER B! ( UNIT SPECIFIED )
ELSE ROT 1+ ROT OVER B! 1+ SWAP OVER B! SWAP 2 - SWAP
ENDIF 1+ SWAP 1- SWAP BEGIN GCHR WHILE
DUP " . = IF
DROP 3 PICK 0= IF
+ SWAP 1+ 3 ROT
ENDIF
ELSE 3 PICK IF
OVER B! 1+ SWAP 1- SWAP
ELSE DROP
ENDIF
ENDIF
REPEAT
ELSE OVER 1+ B!
ENDIF 2DROP DROP DUP FCB 1+ DUP B@ " # = IF
1+ B@ " L = OVER SCHAN# ! 80
ELSE DROP 0
ENDIF SWAP FFLAGS B! ;
: NAMIT WORD HERE B@ WLN ! HERE WPTR ! $NAMIT ;
: $FLOAD R> DUP B@ 2DUP + 1+ >R WLN ! WPTR ! INFILE $NAMIT
INFILE OPENR INTRLP ;
: FLOAD STATE @ IF
'B $FLOAD , WORD HERE B@ 1+ DP+!
ELSE INFILE NAMIT INFILE OPENR INTRLP
ENDIF ;
IMP FLOAD
: ÆEND-OF-FILEÅ CR INFILE CLOSE R> R> 2DROP ININIT ;
IFEND
( ==================================================================== )
( END OF COMPILER/FILE SYSTEM SECTION )
( ==================================================================== )
ÆEND-OF-FILEÅ
«eof»