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Presents historical artifacts from the history of:

IBM System/3

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artifacts from Datamuseum.dk's BitArchive.

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⟦a9da7cb23⟧ s3xseg

    Length: 2286 (0x8ee)
    Types: s3xseg
    Names: »S$BCPL«

Derivation

└─⟦34f897e8c⟧ Bits:30009186 5702-sc1.V16.scp
    └─⟦e1bdf435f⟧ 
        └─⟦this⟧ »S$BCPL« 

TextSegment

       MACRO                                                            00010000                
&LABEL $BCPL &PARM-                                                     00020000                
       TEXT                                                             00190000                
*      CHANGE A POLL/ADDR LIST         RELEASE-7  A                     00200000                
       AIF   (T'&LABEL EQ '').A                                         00210000                
&LABEL EQU   *                                                          00220000                
.A     AIF   (T'&PARM EQ '').A1                                         00230000                
       LA    &PARM,$BPRM1          LOAD PARM ADDR IN XR1.               00240000                
.A1    ST    $R2&SYSNDX,$BPRS2     SAVE XR2.                            00250000                
       ST    $R1&SYSNDX,$BPRM1     SAVE XR1.                            00260000                
       L     $BPDTF(,$BPRM1),$DTF   LOAD ADDR OF DTF IN XR2.            00270000                
       L     $BDLST(,$DTF),$BLST2    LOAD ADDR OF LIST IN XR2.          00280000                
$LP&SYSNDX EQU   *                                                      00290000                
       LA    1(,$BLST2),$BLST2     BUMP XR2 TO LGTH IN POLL LIST.       00300000                
       MVC   $NE&SYSNDX+2(1),0(,$BLST2)  SAVE LGTH OF POLL CHARS.       00310000                
       LA    $BPNUM(,$BPRM1),$BPRM1  BUMP XR1 TO LGTH OF PARM CHARS.    00320000                
       MVI   $CP&SYSNDX+1,$BFOX    * INIT LGTH IN COMPARE INSTR         00330000                
       ALC   $CP&SYSNDX+1,0(1,$BPRM1)  * LGTH - 1.                      00340000                
       MVC   $CP&SYSNDX+2,0(1,$BPRM1) INIT XR1 DISP IN COMPARE INSTR.   00350000                
       MVC   $CP&SYSNDX+3,0(1,$BPRM1) INIT XR2 DISP IN COMPARE INSTR.   00360000                
$CP&SYSNDX EQU   *                                                      00370000                
       CLC   *-*(*-*,$BLIST),*-*(,$BPRM1)  ARE CHARS EQUAL?             00380000                
       MVI   $JP&SYSNDX+2,$SK&SYSNDX INIT TO JMP ARND ENBL/OR DISABLE.  00390000                
       LA    *-*,$BPRM1            RESTORE PARM LIST ADDR IN XR1.       00400000                
$R1&SYSNDX EQU   *-1                                                    00410000                
       JNE   $NE&SYSNDX            NO-SKIP FOLLOWING.                   00420000                
       CLC   3(1,$BPRM1),0(,$BLST2)  *ARE LGTHS UNEQUAL                 00430000                
       TBF   $BPATR(,$BPRM1),$BPEXT  *AND EXACTLY MATCH ON?             00440000                
       JC    $NE&SYSNDX,$TRU+$EQ   YES-THEN SKIP ENABLE/OR DISABLE.     00450000                
       MVI   $JP&SYSNDX+2,$BPNOP   SET TO NO-OP JUMP INSTR.             00460000                
$NE&SYSNDX EQU   *                                                      00470000                
       LA    *-*(,$BLST2),$BLST2   BUMP XR2 TO END OF POLL CHARS.       00480000                
$JP&SYSNDX EQU   *                                                      00490000                
       J     *-*                                                        00500000                
$ST&SYSNDX EQU   *                                                      00510000                
       SBF   1(,$BLST2),$BPENA     SET ACTIVE.                          00520000                
       TBF   $BPATR(,$BPRM1),$BPACT  ACTIVATE SPECIFIED?                00530000                
       JT    $ED&SYSNDX            YES-SKIP FOLLOWING INSTR.            00540000                
       SBN   1(,$BLST2),$BPENA     SET INACTIVE.                        00550000                
$ED&SYSNDX EQU   *                                                      00560000                
       LA    2(,$BLST2),$BLST2     BUMP TO NEXT POLL ENTRY.             00570000                
       CLI   0(,$BLST2),$BPEND   Q IS THIS THE END OF THE LIST.         00580000                
       BL    $LP&SYSNDX            CHECK NEXT ENTRY IN LIST.            00590000                
       LA    *-*,$BPRS2            RESTORE XR2.                         00600000                
$R2&SYSNDX EQU   *-1                                                    00610000                
$SK&SYSNDX EQU   $ED&SYSNDX-$ST&SYSNDX                                  00620000                
       MEND                                                             00630000                
630000