the10thwiz/cc65
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge pull request #2734 from mrdudz/mega65c

Browse Source 
C65 and Mega65 initial C support
This commit is contained in:
Bob Andrews
2025-06-27 16:41:28 +02:00
committed by GitHub
parent 9c4934239e 2de056167a
commit 270552af48
76 changed files with 3771 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files

239
asminc/c65.inc Normal file
View File

@@ -0,0 +1,239 @@
; ---------------------------------------------------------------------------
; Zero page, Commodore stuff
TXTPTR := $3C ; Pointer into BASIC source code
STATUS := $90 ; Kernal I/O completion status
FNAM_LEN := $B7 ; Length of filename
SECADR := $B9 ; Secondary address
DEVNUM := $BA ; Device number
FNAM := $BB ; Address of filename
FNAM_BANK := $BE ; Bank for filename
KEY_COUNT := $D0 ; Number of keys in input buffer
FKEY_COUNT := $D1 ; Characters for function key
MODE := $D7 ; 40-/80-column mode (bit 7: 80 columns)
GRAPHM := $D8 ; Graphics mode flags (bits 5-7)
CHARDIS := $D9 ; Bit 2 shadow for location $01
CURS_X := $EC ; Cursor column
CURS_Y := $EB ; Cursor row
SCREEN_PTR := $E0 ; Pointer to current char in text screen
CRAM_PTR := $E2 ; Pointer to current char in color RAM
CHARCOLOR := $F1
RVS := $F3 ; Reverse output flag
SCROLL := $F8 ; Disable scrolling flag
BASIC_BUF := $0200 ; Location of command-line
BASIC_BUF_LEN = 161 ; Maximum length of command-line
FKEY_LEN := $1000 ; Function key lengths
FKEY_TEXT := $100A ; Function key texts
PALFLAG := $1103 ; $FF=PAL, $00=NTSC
INIT_STATUS := $1104 ; Flags: Reset/Restore initiation status
TIME := $110C ; 60HZ clock
KBDREPEAT := $111a
KBDREPEATRATE := $111b
KBDREPEATDELAY := $111c
; ---------------------------------------------------------------------------
; Vectors
IRQVec := $0314
BRKVec := $0316
NMIVec := $0318
; ---------------------------------------------------------------------------
; I/O: VIC
VIC := $D000
VIC_SPR0_X := $D000
VIC_SPR0_Y := $D001
VIC_SPR1_X := $D002
VIC_SPR1_Y := $D003
VIC_SPR2_X := $D004
VIC_SPR2_Y := $D005
VIC_SPR3_X := $D006
VIC_SPR3_Y := $D007
VIC_SPR4_X := $D008
VIC_SPR4_Y := $D009
VIC_SPR5_X := $D00A
VIC_SPR5_Y := $D00B
VIC_SPR6_X := $D00C
VIC_SPR6_Y := $D00D
VIC_SPR7_X := $D00E
VIC_SPR7_Y := $D00F
VIC_SPR_HI_X := $D010
VIC_SPR_ENA := $D015
VIC_SPR_EXP_Y := $D017
VIC_SPR_EXP_X := $D01D
VIC_SPR_MCOLOR := $D01C
VIC_SPR_BG_PRIO := $D01B
VIC_SPR_COLL := $D01E
VIC_SPR_BG_COLL := $D01F
VIC_SPR_MCOLOR0 := $D025
VIC_SPR_MCOLOR1 := $D026
VIC_SPR0_COLOR := $D027
VIC_SPR1_COLOR := $D028
VIC_SPR2_COLOR := $D029
VIC_SPR3_COLOR := $D02A
VIC_SPR4_COLOR := $D02B
VIC_SPR5_COLOR := $D02C
VIC_SPR6_COLOR := $D02D
VIC_SPR7_COLOR := $D02E
VIC_CTRL1 := $D011
VIC_CTRL2 := $D016
VIC_HLINE := $D012
VIC_LPEN_X := $D013
VIC_LPEN_Y := $D014
VIC_VIDEO_ADR := $D018
VIC_IRR := $D019 ; Interrupt request register
VIC_IMR := $D01A ; Interrupt mask register
VIC_BORDERCOLOR := $D020
VIC_BG_COLOR0 := $D021
VIC_BG_COLOR1 := $D022
VIC_BG_COLOR2 := $D023
VIC_BG_COLOR3 := $D024
; ---------------------------------------------------------------------------
; I/O: FDC
FDC := $D080
; ---------------------------------------------------------------------------
; I/O: SID
SID1 := $D400
SID1_S1Lo := $D400
SID1_S1Hi := $D401
SID1_PB1Lo := $D402
SID1_PB1Hi := $D403
SID1_Ctl1 := $D404
SID1_AD1 := $D405
SID1_SUR1 := $D406
SID1_S2Lo := $D407
SID1_S2Hi := $D408
SID1_PB2Lo := $D409
SID1_PB2Hi := $D40A
SID1_Ctl2 := $D40B
SID1_AD2 := $D40C
SID1_SUR2 := $D40D
SID1_S3Lo := $D40E
SID1_S3Hi := $D40F
SID1_PB3Lo := $D410
SID1_PB3Hi := $D411
SID1_Ctl3 := $D412
SID1_AD3 := $D413
SID1_SUR3 := $D414
SID1_FltLo := $D415
SID1_FltHi := $D416
SID1_FltCtl := $D417
SID1_Amp := $D418
SID1_ADConv1 := $D419
SID1_ADConv2 := $D41A
SID1_Noise := $D41B
SID1_Read3 := $D41C
SID2 := $D420
SID2_S1Lo := $D420
SID2_S1Hi := $D421
SID2_PB1Lo := $D422
SID2_PB1Hi := $D423
SID2_Ctl1 := $D424
SID2_AD1 := $D425
SID2_SUR1 := $D426
SID2_S2Lo := $D427
SID2_S2Hi := $D428
SID2_PB2Lo := $D429
SID2_PB2Hi := $D42A
SID2_Ctl2 := $D42B
SID2_AD2 := $D42C
SID2_SUR2 := $D42D
SID2_S3Lo := $D42E
SID2_S3Hi := $D42F
SID2_PB3Lo := $D430
SID2_PB3Hi := $D431
SID2_Ctl3 := $D432
SID2_AD3 := $D433
SID2_SUR3 := $D434
SID2_FltLo := $D435
SID2_FltHi := $D436
SID2_FltCtl := $D437
SID2_Amp := $D438
SID2_ADConv1 := $D439
SID2_ADConv2 := $D43A
SID2_Noise := $D43B
SID2_Read3 := $D43C
; ---------------------------------------------------------------------------
; I/O: Complex Interface Adapters
CIA1 := $DC00
CIA1_PRA := $DC00 ; Port A
CIA1_PRB := $DC01 ; Port B
CIA1_DDRA := $DC02 ; Data direction register for port A
CIA1_DDRB := $DC03 ; Data direction register for port B
CIA1_TA := $DC04 ; 16-bit timer A
CIA1_TB := $DC06 ; 16-bit timer B
CIA1_TOD10 := $DC08 ; Time-of-day tenths of a second
CIA1_TODSEC := $DC09 ; Time-of-day seconds
CIA1_TODMIN := $DC0A ; Time-of-day minutes
CIA1_TODHR := $DC0B ; Time-of-day hours
CIA1_SDR := $DC0C ; Serial data register
CIA1_ICR := $DC0D ; Interrupt control register
CIA1_CRA := $DC0E ; Control register for timer A
CIA1_CRB := $DC0F ; Control register for timer B
CIA2 := $DD00
CIA2_PRA := $DD00
CIA2_PRB := $DD01
CIA2_DDRA := $DD02
CIA2_DDRB := $DD03
CIA2_TA := $DD04
CIA2_TB := $DD06
CIA2_TOD10 := $DD08
CIA2_TODSEC := $DD09
CIA2_TODMIN := $DD0A
CIA2_TODHR := $DD0B
CIA2_SDR := $DD0C
CIA2_ICR := $DD0D
CIA2_CRA := $DD0E
CIA2_CRB := $DD0F
; ---------------------------------------------------------------------------
; I/O: DMA
DMA := $D700
; ---------------------------------------------------------------------------
; Processor Port at $01
LORAM = $01 ; Enable the basic rom
HIRAM = $02 ; Enable the kernal rom
IOEN = $04 ; Enable I/O
CASSDATA = $08 ; Cassette data
CASSPLAY = $10 ; Cassette: Play
CASSMOT = $20 ; Cassette motor on
TP_FAST = $80 ; Switch Rossmoeller TurboProcess to fast mode
RAMONLY = $F8 ; (~(LORAM | HIRAM | IOEN)) & $FF
; temporary, to get conio working
XSIZE = 80
YSIZE = 50

72
asminc/cbm_kernal.inc
View File

@@ -63,6 +63,43 @@
MOUSE_GET := $FF6B
.endif
.if .def (__MEGA65__)
; extended C65 jump table
; memory before $ff3b is all $ff in mega65 ROM?
; VERSIONQ := $FF2F
; RESET_RUN := $FF32
; CURSOR := $FF35
SAVEFL := $FF3B
GETIO := $FF41
GETLFS := $FF44
KEYLOCKS := $FF47
ADDKEY := $FF4A
.endif
.if .def(__C65__) || .def (__MEGA65__)
CURSOR := $E030 ; in editor ROM
SPIN_SPOUT := $FF4D
CLSALL := $FF50
C64MODE := $FF53
MonitorCall := $FF56
BOOT_SYS := $FF59
PHOENIX := $FF5C
LKUPLA := $FF5F
LKUPSA := $FF62
SWAPPER := $FF65
PFKEY := $FF68
SETBNK := $FF6B
JSRFAR := $FF6E
JMPFAR := $FF71
LDA_FAR := $FF74
STA_FAR := $FF77
CMP_FAR := $FF7A
PRIMM := $FF7D
.endif
.if .def(__C128__)
; C128 extended jump table
C64MODE := $FF4D
@@ -83,7 +120,7 @@
PRIMM := $FF7D
.endif
.if .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__)
.if .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__) || .def(__C65__) || .def (__MEGA65__)
CINT := $FF81
IOINIT := $FF84
RAMTAS := $FF87
@@ -96,7 +133,7 @@
CINT := $FF7E
.endif
.if .def(__VIC20__) || .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__)
.if .def(__VIC20__) || .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__) || .def(__C65__) || .def (__MEGA65__)
RESTOR := $FF8A
VECTOR := $FF8D
.elseif .def(__CBM510__) || .def(__CBM610__)
@@ -112,6 +149,17 @@
MEMBOT := $FF9C
SCNKEY := $FF9F
SETTMO := $FFA2
.elseif .def(__C65__) || .def (__MEGA65__)
SETMSG := $FF90
SECOND := $FF93
TKSA := $FF96
MEMTOP := $FF99
MEMBOT := $FF9C
SCNKEY := $FF9F
MONEXIT := $FFA2
.endif
.if .def(__CBM510__) || .def(__CBM610__) || .def(__VIC20__) || .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__) || .def(__C65__) || .def(__MEGA65__)
ACPTR := $FFA5
CIOUT := $FFA8
UNTLK := $FFAB
@@ -136,7 +184,7 @@ CHRIN := $FFCF
BSOUT := $FFD2
CHROUT := $FFD2
.if .def(__CBM510__) || .def(__CBM610__) || .def(__VIC20__) || .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__)
.if .def(__CBM510__) || .def(__CBM610__) || .def(__VIC20__) || .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__) || .def(__C65__) || .def(__MEGA65__)
LOAD := $FFD5
SAVE := $FFD8
SETTIM := $FFDB
@@ -147,9 +195,14 @@ CHROUT := $FFD2
STOP := $FFE1
GETIN := $FFE4
CLALL := $FFE7
UDTIM := $FFEA
.if .def(__CBM510__) || .def(__CBM610__) || .def(__VIC20__) || .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__)
.if .def(__C65__) || .def(__MEGA65__)
ScanStopKey := $FFEA
.else
UDTIM := $FFEA
.endif
.if .def(__CBM510__) || .def(__CBM610__) || .def(__VIC20__) || .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__) || .def(__C65__) || .def(__MEGA65__)
SCREEN := $FFED
PLOT := $FFF0
IOBASE := $FFF3
@@ -173,10 +226,10 @@ UDTIM := $FFEA
KBDREAD := $E5CF
UPDCRAMPTR := $EAB2
.elseif .def(__C64__)
CLRSCR := $E544
KBDREAD := $E5B4
CLRSCR := $E544 ; Clear the screen
KBDREAD := $E5B4 ; Get Character From Keyboard Buffer
NMIEXIT := $FEBC
UPDCRAMPTR := $EA24
UPDCRAMPTR := $EA24 ; Update color ram pointer
.elseif .def(__C128__)
CLRSCR := $C142
KBDREAD := $C006
@@ -189,4 +242,7 @@ UDTIM := $FFEA
.elseif .def(__C16__)
CLRSCR := $D88B
KBDREAD := $D8C1
.elseif .def(__C65__) || .def(__MEGA65__)
; CLRSCR := $E0EC ; ???
KBDREAD := $E006
.endif

26
asminc/cpu.mac
View File

@@ -1,4 +1,5 @@
; CPU bitmask constants
; CPU bitmask constants (make sure this matches src/common/cpu.h)
CPU_ISET_NONE = $0001
CPU_ISET_6502 = $0002
CPU_ISET_6502X = $0004
@@ -13,17 +14,20 @@ CPU_ISET_4510 = $0400
CPU_ISET_45GS02 = $0800
; CPU capabilities
; make sure to only combine the instruction sets that are 100% compatible
CPU_NONE = CPU_ISET_NONE
CPU_6502 = CPU_ISET_6502
CPU_6502X = CPU_ISET_6502|CPU_ISET_6502X
CPU_6502DTV = CPU_ISET_6502|CPU_ISET_6502DTV
CPU_65SC02 = CPU_ISET_6502|CPU_ISET_65SC02
CPU_65C02 = CPU_ISET_6502|CPU_ISET_65SC02|CPU_ISET_65C02
CPU_65816 = CPU_ISET_6502|CPU_ISET_65SC02|CPU_ISET_65816
CPU_6502X = CPU_ISET_6502X | CPU_ISET_6502
CPU_6502DTV = CPU_ISET_6502DTV | CPU_ISET_6502
CPU_65SC02 = CPU_ISET_65SC02 | CPU_ISET_6502
CPU_65C02 = CPU_ISET_65C02 | CPU_ISET_6502 | CPU_ISET_65SC02
CPU_65816 = CPU_ISET_65816 | CPU_ISET_6502 | CPU_ISET_65SC02
CPU_SWEET16 = CPU_ISET_SWEET16
; FIXME: CPU_ISET_65SC02 does not apply to the following, because the zp-indirect
; addressing was replaced with zp-indirect,z-indexed in 652SCE02
; NOTE: HUC6280 removes "wai" ($cb) and "stp" ($db) from the 65C02 instruction set
CPU_HUC6280 = CPU_ISET_6502|CPU_ISET_65SC02|CPU_ISET_65C02|CPU_ISET_HUC6280
; NOTE: 45100 replaces "wai" ($cb) and "stp" ($db) of the 65C02 instruction set
CPU_4510 = CPU_ISET_6502|CPU_ISET_65SC02|CPU_ISET_65C02|CPU_ISET_4510
CPU_45GS02 = CPU_ISET_6502|CPU_ISET_65SC02|CPU_ISET_65C02|CPU_ISET_4510|CPU_ISET_45GS02
CPU_M740 = CPU_ISET_6502|CPU_ISET_M740
CPU_HUC6280 = CPU_ISET_HUC6280 | CPU_ISET_6502 | CPU_ISET_65C02
; NOTE: 4510 replaces "wai" ($cb) and "stp" ($db) of the 65C02 instruction set
CPU_4510 = CPU_ISET_4510 | CPU_ISET_6502 | CPU_ISET_65C02
CPU_45GS02 = CPU_ISET_45GS02 | CPU_ISET_6502 | CPU_ISET_65C02 | CPU_ISET_4510
CPU_M740 = CPU_ISET_M740 | CPU_ISET_6502

239
asminc/mega65.inc Normal file
View File

@@ -0,0 +1,239 @@
; ---------------------------------------------------------------------------
; Zero page, Commodore stuff
TXTPTR := $3C ; Pointer into BASIC source code
STATUS := $90 ; Kernal I/O completion status
FNAM_LEN := $B7 ; Length of filename
SECADR := $B9 ; Secondary address
DEVNUM := $BA ; Device number
FNAM := $BB ; Address of filename
FNAM_BANK := $BE ; Bank for filename
KEY_COUNT := $D0 ; Number of keys in input buffer
FKEY_COUNT := $D1 ; Characters for function key
MODE := $D7 ; 40-/80-column mode (bit 7: 80 columns)
GRAPHM := $D8 ; Graphics mode flags (bits 5-7)
CHARDIS := $D9 ; Bit 2 shadow for location $01
CURS_X := $EC ; Cursor column
CURS_Y := $EB ; Cursor row
SCREEN_PTR := $E0 ; Pointer to current char in text screen
CRAM_PTR := $E2 ; Pointer to current char in color RAM
CHARCOLOR := $F1
RVS := $F3 ; Reverse output flag
SCROLL := $F8 ; Disable scrolling flag
BASIC_BUF := $0200 ; Location of command-line
BASIC_BUF_LEN = 161 ; Maximum length of command-line
FKEY_LEN := $1000 ; Function key lengths
FKEY_TEXT := $100A ; Function key texts
PALFLAG := $1103 ; $FF=PAL, $00=NTSC
INIT_STATUS := $1104 ; Flags: Reset/Restore initiation status
TIME := $110C ; 60HZ clock
KBDREPEAT := $111a
KBDREPEATRATE := $111b
KBDREPEATDELAY := $111c
; ---------------------------------------------------------------------------
; Vectors
IRQVec := $0314
BRKVec := $0316
NMIVec := $0318
; ---------------------------------------------------------------------------
; I/O: VIC
VIC := $D000
VIC_SPR0_X := $D000
VIC_SPR0_Y := $D001
VIC_SPR1_X := $D002
VIC_SPR1_Y := $D003
VIC_SPR2_X := $D004
VIC_SPR2_Y := $D005
VIC_SPR3_X := $D006
VIC_SPR3_Y := $D007
VIC_SPR4_X := $D008
VIC_SPR4_Y := $D009
VIC_SPR5_X := $D00A
VIC_SPR5_Y := $D00B
VIC_SPR6_X := $D00C
VIC_SPR6_Y := $D00D
VIC_SPR7_X := $D00E
VIC_SPR7_Y := $D00F
VIC_SPR_HI_X := $D010
VIC_SPR_ENA := $D015
VIC_SPR_EXP_Y := $D017
VIC_SPR_EXP_X := $D01D
VIC_SPR_MCOLOR := $D01C
VIC_SPR_BG_PRIO := $D01B
VIC_SPR_COLL := $D01E
VIC_SPR_BG_COLL := $D01F
VIC_SPR_MCOLOR0 := $D025
VIC_SPR_MCOLOR1 := $D026
VIC_SPR0_COLOR := $D027
VIC_SPR1_COLOR := $D028
VIC_SPR2_COLOR := $D029
VIC_SPR3_COLOR := $D02A
VIC_SPR4_COLOR := $D02B
VIC_SPR5_COLOR := $D02C
VIC_SPR6_COLOR := $D02D
VIC_SPR7_COLOR := $D02E
VIC_CTRL1 := $D011
VIC_CTRL2 := $D016
VIC_HLINE := $D012
VIC_LPEN_X := $D013
VIC_LPEN_Y := $D014
VIC_VIDEO_ADR := $D018
VIC_IRR := $D019 ; Interrupt request register
VIC_IMR := $D01A ; Interrupt mask register
VIC_BORDERCOLOR := $D020
VIC_BG_COLOR0 := $D021
VIC_BG_COLOR1 := $D022
VIC_BG_COLOR2 := $D023
VIC_BG_COLOR3 := $D024
; ---------------------------------------------------------------------------
; I/O: FDC
FDC := $D080
; ---------------------------------------------------------------------------
; I/O: SID
SID0 := $D400
SID0_S1Lo := $D400
SID0_S1Hi := $D401
SID0_PB1Lo := $D402
SID0_PB1Hi := $D403
SID0_Ctl1 := $D404
SID0_AD1 := $D405
SID0_SUR1 := $D406
SID0_S2Lo := $D407
SID0_S2Hi := $D408
SID0_PB2Lo := $D409
SID0_PB2Hi := $D40A
SID0_Ctl2 := $D40B
SID0_AD2 := $D40C
SID0_SUR2 := $D40D
SID0_S3Lo := $D40E
SID0_S3Hi := $D40F
SID0_PB3Lo := $D410
SID0_PB3Hi := $D411
SID0_Ctl3 := $D412
SID0_AD3 := $D413
SID0_SUR3 := $D414
SID0_FltLo := $D415
SID0_FltHi := $D416
SID0_FltCtl := $D417
SID0_Amp := $D418
SID0_ADConv1 := $D419
SID0_ADConv2 := $D41A
SID0_Noise := $D41B
SID0_Read3 := $D41C
SID1 := $D420
SID1_S1Lo := $D420
SID1_S1Hi := $D421
SID1_PB1Lo := $D422
SID1_PB1Hi := $D423
SID1_Ctl1 := $D424
SID1_AD1 := $D425
SID1_SUR1 := $D426
SID1_S2Lo := $D427
SID1_S2Hi := $D428
SID1_PB2Lo := $D429
SID1_PB2Hi := $D42A
SID1_Ctl2 := $D42B
SID1_AD2 := $D42C
SID1_SUR2 := $D42D
SID1_S3Lo := $D42E
SID1_S3Hi := $D42F
SID1_PB3Lo := $D430
SID1_PB3Hi := $D431
SID1_Ctl3 := $D432
SID1_AD3 := $D433
SID1_SUR3 := $D434
SID1_FltLo := $D435
SID1_FltHi := $D436
SID1_FltCtl := $D437
SID1_Amp := $D438
SID1_ADConv1 := $D439
SID1_ADConv2 := $D43A
SID1_Noise := $D43B
SID1_Read3 := $D43C
; ---------------------------------------------------------------------------
; I/O: Complex Interface Adapters
CIA1 := $DC00
CIA1_PRA := $DC00 ; Port A
CIA1_PRB := $DC01 ; Port B
CIA1_DDRA := $DC02 ; Data direction register for port A
CIA1_DDRB := $DC03 ; Data direction register for port B
CIA1_TA := $DC04 ; 16-bit timer A
CIA1_TB := $DC06 ; 16-bit timer B
CIA1_TOD10 := $DC08 ; Time-of-day tenths of a second
CIA1_TODSEC := $DC09 ; Time-of-day seconds
CIA1_TODMIN := $DC0A ; Time-of-day minutes
CIA1_TODHR := $DC0B ; Time-of-day hours
CIA1_SDR := $DC0C ; Serial data register
CIA1_ICR := $DC0D ; Interrupt control register
CIA1_CRA := $DC0E ; Control register for timer A
CIA1_CRB := $DC0F ; Control register for timer B
CIA2 := $DD00
CIA2_PRA := $DD00
CIA2_PRB := $DD01
CIA2_DDRA := $DD02
CIA2_DDRB := $DD03
CIA2_TA := $DD04
CIA2_TB := $DD06
CIA2_TOD10 := $DD08
CIA2_TODSEC := $DD09
CIA2_TODMIN := $DD0A
CIA2_TODHR := $DD0B
CIA2_SDR := $DD0C
CIA2_ICR := $DD0D
CIA2_CRA := $DD0E
CIA2_CRB := $DD0F
; ---------------------------------------------------------------------------
; I/O: DMA
DMA := $D700
; ---------------------------------------------------------------------------
; Processor Port at $01
LORAM = $01 ; Enable the basic rom
HIRAM = $02 ; Enable the kernal rom
IOEN = $04 ; Enable I/O
CASSDATA = $08 ; Cassette data
CASSPLAY = $10 ; Cassette: Play
CASSMOT = $20 ; Cassette motor on
TP_FAST = $80 ; Switch Rossmoeller TurboProcess to fast mode
RAMONLY = $F8 ; (~(LORAM | HIRAM | IOEN)) & $FF
; temporary, to get conio working
XSIZE = 80
YSIZE = 50