This page (revision-26) was last changed on 03-Feb-2023 15:21 by Roland B. Wassenberg 

This page was created on 28-Jan-2015 20:03 by Roland B. Wassenberg

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Version Date Modified Size Author Changes ... Change note
26 03-Feb-2023 15:21 12 KB Roland B. Wassenberg to previous
25 26-Apr-2020 11:49 12 KB Roland B. Wassenberg to previous | to last
24 26-Apr-2020 10:53 12 KB Roland B. Wassenberg to previous | to last
23 26-Apr-2020 10:49 12 KB Roland B. Wassenberg to previous | to last
22 26-Apr-2020 10:47 12 KB Roland B. Wassenberg to previous | to last
21 26-Apr-2020 10:36 11 KB Roland B. Wassenberg to previous | to last

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Bug65
Bug65

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At line 15 changed one line
* [BUG-65 Manual 1.pdf] ; size: 102 KB ; Mega-thanks to Erhard Pütz and Dieter Lichtenegger for giving us the best BUG/65 manual possible! :-)
* [BUG-65 Manual in html|bug65.zip] ; BUG/65 manual in html with css ; Mega-thanks to Erhard Pütz and Dieter Lichtenegger for giving us the best BUG/65 manual possible! :-)
* [BUG-65 Manual 1.pdf] ; size: 102 KB
At line 26 changed 69 lines
;**************************************************
; EQUATES INTO BUG/65:
;
LOADPOINT = ???? ; to be determined by user!!
LP = LOADPOINT ; just an abbreviation
MCBEND = LP+$021F ; BUG/65 END CODE MSB
DISPV = LP+$0209 ; DISPLAY CHAR
USRCMD = LP+$0220 ; USER COMMAND VECTOR
GET2HX = LP+$022C ; GET 2 HEX PARAMS
HEXL = $FC ; HEX PARAM 1 RESULT
HEX2 = $FE ; HEX PARAM 2 RESULT
ERRPAR = LP+$0235 ; REPORT PARAM ERROR
DHXBYT = LP+$0238 ; DISPLAY HEX BYTE
LSTPG0 = LP+$0240 ; LAST BUG/65 P0 BYTE USED
EOL = $9B ; END OF LINE CHAR
;
;**************************************************
*= USRCMD ; PATCH US INTO BUG/65
JMP USERC1
;
*= LP+$2000 ; RIGHT AFTER BUG/65 CODE
USERC1 CMP #'1 ; COMMAND "1" ?
BEQ CMDOK ; YES
RTS ; ELSE RTN EQUAL RESET - ERR
;
CMDOK JSR GET2HX ; GET START, END
LDA HEX1 ; MAKE SURE BOTH SPECIFIED
ORA HEX1+1
BEQ PARMER ; OR ELSE ERROR
LDA HEX2
ORA HEX2+1
BNE PARMOK
;
PARMER JMP ERRPAR ; REPORT PARAM ERROR
;
PARMOK LDX LSTPG0 ; LAST BUG/65 P0 BYTE
; (WE'LL USE THE NEXT
; FOR OUR ACCUMULATOR)
LDA #0 ; CLEAR ACCUMULATOR
STA 1,X
TAY ; INIT Y PTR INDEX
;
LOOP LDA HEX2+1 ; PAST END ADDRESS ?
CMP HEX1+1
BCC DONE ; YES
BNE NXTEOR ; NO
LDA HEX2
CMP HEX1
BCC DONE ; YES
;
NXTEOR LDA (HEX1),Y ; CALC EOR CHKSUM
EOR 1,X ; EOR WITH ACCUM
STA 1,X ; AND SAVE IN ACCUM
INC HEX1 ; BUMP PTR
BNE LOOP
INC HEX1+1
JMP LOOP
;
DONE LDA #EOL ; TO NEXT SCREEN LINE
JSR DISPV
LDX LSTPG0 ; RESTORE ACCUM ADDRESS
LDA 1,X ; DISPLAY HEX RESULT
JSR DHXBYT
LDA #0 ; RTN OK (EQUAL SET)
RTS
;
*= MCBEND ; CHANGE BUG/65 CODE
.BYTE >[*+$FF] ; END BYTE TO INCLUDE
.END ; THAT'S ALL FOLKS
0005 ;**************************************************
0010 ; EQUATES INTO BUG/65:
0015 ;
0020 loadpoint = ???? ; to be determined by user!!
0025 lp = loadpoint ; just an abbreviation
0030 MCBEND = lp+$21F ; BUG/65 END CODE MSB
0035 DISPV = lp+$209 ; DISPLAY CHAR
0040 USRCMD = lp+$220 ; USER COMMAND VECTOR
0045 GET2HX = lp+$22C ; GET 2 HEX PARAMS
0050 HEXl = $FC ; HEX PARAM 1 RESULT
0055 HEX2 = $FE ; HEX PARAM 2 RESULT
0060 ERRPAR = lp+$235 ; REPORT PARAM ERROR
0065 DHXBYT = lp+$238 ; DISPLAY HEX BYTE
0070 LSTPG0 = lp+$240 ; LAST BUG/65 P0 BYTE USED
0075 EOL = $9B ; END OF LINE CHAR
0080 ;
0090 ;**************************************************
0100 *= USRCMD ; PATCH US INTO BUG/65
0110 JMP USERC1
0120 ;
0130 *= lp+$2000 ; RIGHT AFTER BUG/65 CODE
0140 USERC1 CMP #'1 ; COMMAND "1" ?
0150 BEQ CMDOK ; YES
0160 RTS ; ELSE RTN EQUAL RESET - ERR
0170 ;
0180 CMDOK JSR GET2HX ; GET START, END
0190 LDA HEX1 ; MAKE SURE BOTH SPECIFIED
0200 ORA HEX1+1
0210 BEQ PARMER ; OR ELSE ERROR
0220 LDA HEX2
0230 ORA HEX2+1
0240 BNE PARMOK
0250 ;
0260 PARMER JMP ERRPAR ; REPORT PARAM ERROR
0270 ;
0280 PARMOK LDX LSTPG0 ; LAST BUG/65 P0 BYTE
0290 ; (WE'LL USE THE NEXT
0300 ; FOR OUR ACCUMULATOR)
0310 LDA #0 ; CLEAR ACCUMULATOR
0320 STA 1,X
0330 TAY ; INIT Y PTR INDEX
0340 ;
0350 LOOP LDA HEX2+1 ; PAST END ADDRESS ?
0360 CMP HEX1+1
0370 BCC DONE ; YES
0380 BNE NXTEOR ; NO
0390 LDA HEX2
0400 CMP HEX1
0410 BCC DONE ; YES
0420 ;
0430 NXTEOR LDA (HEX1),Y ; CALC EOR CHKSUM
0440 EOR 1,X ; EOR WITH ACCUM
0450 STA 1,X ; AND SAVE IN ACCUM
0460 INC HEX1 ; BUMP PTR
0470 BNE LOOP
0480 INC HEX1+1
0490 JMP LOOP
0500 ;
0510 DONE LDA #EOL ; TO NEXT SCREEN LINE
0520 JSR DISPV
0530 LDX LSTPG0 ; RESTORE ACCUM ADDRESS
0540 LDA 1,X ; DISPLAY HEX RESULT
0550 JSR DHXBYT
0560 LDA #0 ; RTN OK (EQUAL SET)
0570 RTS
0580 ;
0590 *= MCBEND ; CHANGE BUG/65 CODE
0600 .BYTE >[*+$FF] ; END BYTE TO INCLUDE
0610 .END ; THAT'S ALL FOLKS
This page (revision-26) was last changed on 03-Feb-2023 15:21 by Roland B. Wassenberg  Top