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c64.inc
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c64.inc
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;
; C64 generic definitions. Stolen from Elite128
;
; ---------------------------------------------------------------------------
; Zero page, Commodore stuff
VARTAB := $2D ; Pointer to start of BASIC variables
MEMSIZE := $37 ; Pointer to highest BASIC RAM location (+1)
TXTPTR := $7A ; Pointer into BASIC source code
STATUS := $90 ; Kernal I/O completion status
TIME := $A0 ; 60 HZ clock
FNAM_LEN := $B7 ; Length of filename
SECADR := $B9 ; Secondary address
DEVNUM := $BA ; Device number
FNAM := $BB ; Pointer to filename
KEY_COUNT := $C6 ; Number of keys in input buffer
RVS := $C7 ; Reverse flag
CURS_FLAG := $CC ; 1 = cursor off
CURS_BLINK := $CD ; Blink counter
CURS_CHAR := $CE ; Character under the cursor
CURS_STATE := $CF ; Cursor blink state
SCREEN_PTR := $D1 ; Pointer to current char in text screen
CURS_X := $D3 ; Cursor column
CURS_Y := $D6 ; Cursor row
CRAM_PTR := $F3 ; Pointer to current char in color RAM
FREKZP := $FB ; Five unused bytes
BASIC_BUF := $200 ; Location of command-line
BASIC_BUF_LEN = 89 ; Maximum length of command-line
CHARCOLOR := $286
CURS_COLOR := $287 ; Color under the cursor
PALFLAG := $2A6 ; $01 = PAL, $00 = NTSC
KBDREPEAT := $28a
KBDREPEATRATE := $28b
KBDREPEATDELAY := $28c
; ---------------------------------------------------------------------------
; Vector and other locations
IRQVec := $0314
BRKVec := $0316
NMIVec := $0318
; ---------------------------------------------------------------------------
; Screen size
XSIZE = 40
YSIZE = 25
; ---------------------------------------------------------------------------
; 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
; 128 stuff:
VIC_KBD_128 := $D02F ; Extended kbd bits (visible in 64 mode)
VIC_CLK_128 := $D030 ; Clock rate register (visible in 64 mode)
; ---------------------------------------------------------------------------
; I/O: SID
SID := $D400
SID_S1Lo := $D400
SID_S1Hi := $D401
SID_PB1Lo := $D402
SID_PB1Hi := $D403
SID_Ctl1 := $D404
SID_AD1 := $D405
SID_SUR1 := $D406
SID_S2Lo := $D407
SID_S2Hi := $D408
SID_PB2Lo := $D409
SID_PB2Hi := $D40A
SID_Ctl2 := $D40B
SID_AD2 := $D40C
SID_SUR2 := $D40D
SID_S3Lo := $D40E
SID_S3Hi := $D40F
SID_PB3Lo := $D410
SID_PB3Hi := $D411
SID_Ctl3 := $D412
SID_AD3 := $D413
SID_SUR3 := $D414
SID_FltLo := $D415
SID_FltHi := $D416
SID_FltCtl := $D417
SID_Amp := $D418
SID_ADConv1 := $D419
SID_ADConv2 := $D41A
SID_Noise := $D41B
SID_Read3 := $D41C
; ---------------------------------------------------------------------------
; I/O: VDC (128 only)
VDC_INDEX := $D600
VDC_DATA := $D601
; ---------------------------------------------------------------------------
; 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
; ---------------------------------------------------------------------------
; Super CPU
SCPU_VIC_Bank1 := $D075
SCPU_Slow := $D07A
SCPU_Fast := $D07B
SCPU_EnableRegs := $D07E
SCPU_DisableRegs:= $D07F
SCPU_Detect := $D0BC
; ---------------------------------------------------------------------------
; 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