Apple II User Manual
0976 E5E9 60 RTS
0977 E5EA
0978 E5EA ;***** P COMMAND-ALTER PROCESSOR STATUS *****
0978 E5EA ;***** P COMMAND-ALTER PROCESSOR STATUS *****
0979 E5EA A2 00 CGPS LDX #0
0980 E5EC F0 0E BEQ CGALL
0980 E5EC F0 0E BEQ CGALL
0981 E5EE
0982 E5EE ;***** A COMMAND-ALTER ACCUMULATOR *****
0982 E5EE ;***** A COMMAND-ALTER ACCUMULATOR *****
0983 E5EE A2 01 CGA LDX #1
0984 E5F0 D0 0A BNE CGALL
0984 E5F0 D0 0A BNE CGALL
0985 E5F2
0986 E5F2 ;***** X COMMAND-ALTER X REGISTER *****
0986 E5F2 ;***** X COMMAND-ALTER X REGISTER *****
0987 E5F2 A2 02 CGX LDX #2
0988 E5F4 D0 06 BNE CGALL
0988 E5F4 D0 06 BNE CGALL
0989 E5F6
0990 E5F6 ;***** Y COMMAND-ALTER Y REGISTER *****
0990 E5F6 ;***** Y COMMAND-ALTER Y REGISTER *****
0991 E5F6 A2 03 CGY LDX #3
0992 E5F8 D0 02 BNE CGALL
0992 E5F8 D0 02 BNE CGALL
0993 E5FA
0994 E5FA ;***** S COMMAND-ALTER STACK POINTER *****
0994 E5FA ;***** S COMMAND-ALTER STACK POINTER *****
0995 E5FA A2 04 CGS LDX #4
0996 E5FC 20 D8 E7 CGALL JSR EQUAL ;PRINT PROMPT
0996 E5FC 20 D8 E7 CGALL JSR EQUAL ;PRINT PROMPT
0997 E5FF 20 5D EA JSR RD2 ;GET VALUE FROM KEYBOARD
0998 E602 B0 04 BCS GOERR
0998 E602 B0 04 BCS GOERR
0999 E604 9D 20 A4 STA SAVPS,X
1000 E607 60 RTS
1000 E607 60 RTS
1001 E608 20 D4 E7 GOERR JSR QM
1002 E60B D0 EF BNE CGALL
1002 E60B D0 EF BNE CGALL
1003 E60D
1004 E60D ;***** <SPACE> COMMAND-SHOW NEXT 5 MEMORY LOC *****
1004 E60D ;***** <SPACE> COMMAND-SHOW NEXT 5 MEMORY LOC *****
1005 E60D 20 3E E8 NXT5 JSR BLANK
1006 E610 A0 04 LDY #4 ;UPDATE ADDR FROM
1006 E610 A0 04 LDY #4 ;UPDATE ADDR FROM
1007 E612 20 CD E2 JSR NXTADD ;<M>=XXXX
1008 E615 20 DB E2 JSR WRITAZ ;OUTPUT ADDRESS
1008 E615 20 DB E2 JSR WRITAZ ;OUTPUT ADDRESS
1009 E618 4C 4D E2 JMP MEIN ;DISPLAY CONTENTS OF NEXT 4 LOCS
1010 E61B
1010 E61B
1011 E61B ;***** B COMMAND-SET BREAKPOINT ADDR *****
1012 E61B A0 27 BRKA LDY #M8-M1 ;PRINT "BRK"
1012 E61B A0 27 BRKA LDY #M8-M1 ;PRINT "BRK"
1013 E61D 20 AF E7 JSR KEP
1014 E620 20 37 E8 BRK1 JSR PSL1 ;PRINT "/"
1014 E620 20 37 E8 BRK1 JSR PSL1 ;PRINT "/"
1015 E623 20 73 E9 JSR REDOUT ;GET BREAK NUMBER
1016 E626 38 SEC
1016 E626 38 SEC
1017 E627 E9 30 SBC #'0' ;0 THRU 3
1018 E629 30 04 BMI BKERR ;CHARACTER < '0' -ILLEGAL
1018 E629 30 04 BMI BKERR ;CHARACTER < '0' -ILLEGAL
1019 E62B C9 04 CMP #4 ;FOUR BRK POINTS
1020 E62D 30 05 BMI BKOK ;0 < CHARACTER < 4 -OK
1020 E62D 30 05 BMI BKOK ;0 < CHARACTER < 4 -OK
1021 E62F 20 D4 E7 BKERR JSR QM ;ERROR
1022 E632 D0 EC BNE BRK1 ;ALLOW REENTRY OF BREAK NUMBER
1022 E632 D0 EC BNE BRK1 ;ALLOW REENTRY OF BREAK NUMBER
1023 E634 0A BKOK ASL A ;*2 TO FORM WORD OFFSET
1024 E635 48 PHA ;SAVE IT
1024 E635 48 PHA ;SAVE IT
1025 E636 20 AE EA JSR ADDIN ;GET ADDRESS FOR BREAKPOINT
1026 E639 68 PLA
1026 E639 68 PLA
1027 E63A B0 10 BCS BKO2 ;BAD ADDRESS ENTERED
1028 E63C 20 3D FF JSR PATC18 ;<CR> & CLR BUFFERS
1028 E63C 20 3D FF JSR PATC18 ;<CR> & CLR BUFFERS
1029 E63F AA TAX ;# OF BRK
1030 E640 AD 1C A4 LDA ADDR ;STORE ENTERED ADDR IN BRKPT LIST
1030 E640 AD 1C A4 LDA ADDR ;STORE ENTERED ADDR IN BRKPT LIST
1031 E643 9D 00 01 STA BKS,X
1032 E646 AD 1D A4 LDA ADDR+1
1032 E646 AD 1D A4 LDA ADDR+1
1033 E649 9D 01 01 STA BKS+1,X
1034 E64C 60 BKO2 RTS ;ALL DONE
1034 E64C 60 BKO2 RTS ;ALL DONE
1035 E64D
1036 E64D ;***** ? COMMAND-SHOW CURRENT BREAKPOINTS *****
1036 E64D ;***** ? COMMAND-SHOW CURRENT BREAKPOINTS *****
1037 E64D A0 00 SHOW LDY #0