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Tweaked the memory location for running on 8K PETs #5

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Tweaked the memory location for running on 8K PETs #5

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eec2c7f
Moved the memory location to run correctly on 8K PETs, both for
awhitney42 Apr 21, 2022
d1b0a64
Updated the HIMEM starting address info in the Makefile.
awhitney42 Apr 21, 2022
27e9de5
Updated the SYS command memory locations documented for the HIMEM ver…
awhitney42 Apr 24, 2022
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2 changes: 1 addition & 1 deletion Makefile
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
SYS8K=2400
SYS8K=2050
SYS16K=8192
SYS32K=20480
default:
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16 changes: 8 additions & 8 deletions README.md
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Expand Up @@ -98,18 +98,18 @@ Basic:

The higher memory versions with the BASIC save/load extension

- petterm8K_40G.prg - 40 column PETs with graphics keyboard, BASIC save/load, higher memory version (SYS 3200)
- petterm8K_80G.prg - 80 column PETs with graphics keyboard, BASIC save/load, higher memory version (SYS 3200)
- petterm8K_40B.prg - 40 column PETs with business keyboard, BASIC save/load, higher memory version (SYS 3200)
- petterm8K_80B.prg - 80 column PETs with business keyboard, BASIC save/load, higher memory version (SYS 3200)
- petterm8K_40G.prg - 40 column PETs with graphics keyboard, BASIC save/load, higher memory version (SYS 2050)
- petterm8K_80G.prg - 80 column PETs with graphics keyboard, BASIC save/load, higher memory version (SYS 2050)
- petterm8K_40B.prg - 40 column PETs with business keyboard, BASIC save/load, higher memory version (SYS 2050)
- petterm8K_80B.prg - 80 column PETs with business keyboard, BASIC save/load, higher memory version (SYS 2050)
- petterm16K_40G.prg - 40 column PETs with graphics keyboard, BASIC save/load, higher memory version (SYS 8192)
- petterm16K_80G.prg - 80 column PETs with graphics keyboard, BASIC save/load, higher memory version (SYS 8192)
- petterm16K_40B.prg - 40 column PETs with business keyboard, BASIC save/load, higher memory version (SYS 8192)
- petterm16K_80B.prg - 80 column PETs with business keyboard, BASIC save/load, higher memory version (SYS 8192)
- petterm32K_40G.prg - 40 column PETs with graphics keyboard, BASIC save/load, higher memory version (SYS 24576)
- petterm32K_80G.prg - 80 column PETs with graphics keyboard, BASIC save/load, higher memory version (SYS 24576)
- petterm32K_40B.prg - 40 column PETs with business keyboard, BASIC save/load, higher memory version (SYS 24576)
- petterm32K_80B.prg - 80 column PETs with business keyboard, BASIC save/load, higher memory version (SYS 24576)
- petterm32K_40G.prg - 40 column PETs with graphics keyboard, BASIC save/load, higher memory version (SYS 20480)
- petterm32K_80G.prg - 80 column PETs with graphics keyboard, BASIC save/load, higher memory version (SYS 20480)
- petterm32K_40B.prg - 40 column PETs with business keyboard, BASIC save/load, higher memory version (SYS 20480)
- petterm32K_80B.prg - 80 column PETs with business keyboard, BASIC save/load, higher memory version (SYS 20480)

PRG files are the native programs, can be added to a tape or disk image

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11 changes: 5 additions & 6 deletions constants.s
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Expand Up @@ -75,20 +75,19 @@ BAS1_EOA EQU $0080 ; 80/81 - End of Arrays Ptr
; Memory location for this program.
IFCONST HIMEM
IFCONST MEM8K
MYORG EQU $0960 ; SYS 2400 (1,1375 bytes for BASIC)
MYRORG EQU $1AFF
MYORG EQU $0802 ; SYS 2050 (1,024 bytes for BASIC)
MYRORG EQU $1FFF
ENDIF
IFCONST MEM16K
MYORG EQU $2000 ; SYS 8192 (7,167 bytes for BASIC)
MYORG EQU $2000 ; SYS 8192 (7,167 bytes for BASIC)
MYRORG EQU $3A34
ENDIF
IFCONST MEM32K
MYORG EQU $5000 ; SYS 20480 (19,455 bytes for BASIC)
MYORG EQU $5000 ; SYS 20480 (19,455 bytes for BASIC)
MYRORG EQU $7000
ENDIF
ELSE
MYORG EQU $0960 ; SYS 2400
MYRORG EQU $1AFF
MYRORG EQU $1FFF
ENDIF

; Start of BASIC on PET/CBM computers
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14 changes: 8 additions & 6 deletions petterm.s
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Expand Up @@ -225,19 +225,21 @@ BLDR
DC.W 10 ; Line Number = 10
DC.B $9E ; SYS
; Decimal Address in ASCII $30 is 0 $31 is 1, etc
DC.B (MYORG/10000)%10 + '0
DC.B (MYORG/ 1000)%10 + '0
DC.B (MYORG/ 100)%10 + '0
DC.B (MYORG/ 10)%10 + '0
DC.B (MYORG/ 1)%10 + '0
DC.B (INIT/10000)%10 + '0
DC.B (INIT/ 1000)%10 + '0
DC.B (INIT/ 100)%10 + '0
DC.B (INIT/ 10)%10 + '0
DC.B (INIT/ 1)%10 + '0

DC.B $0 ; Line End
BLDR_ENDL
DC.W $0 ; LINK (End of program)
;-----------------------------------------------------------------------
ENDIF
ELSE

ORG MYORG

ENDIF
;-----------------------------------------------------------------------
; Initialization
INIT SUBROUTINE
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