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https://github.com/cc65/cc65.git
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257 lines
5.1 KiB
PHP
257 lines
5.1 KiB
PHP
;
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; Zero page variables and I/O definitions for the CBM 510
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;
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; Taken from a kernal disassembly done by myself in 2000/2001.
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;
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; Ullrich von Bassewitz, 13.09.2001
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;-----------------------------------------------------------------------------
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; Zeropage stuff
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ExecReg = $0000
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IndReg = $0001
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; Up to $20 and $60-8F used by runtime and fixed values
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; -----------------------------------
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KbdScanBuf = $20 ; Intermediate for keyboard scan
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FileNameAdrLo = $90
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FileNameAdrHi = $91
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FileNameAdrSeg = $92
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FileNameLen = $9D
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LogicalAdr = $9E
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FirstAdr = $9F
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SecondAdr = $A0
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IndSegSave = $B5
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SCREEN_PTR = $C8
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CURS_Y = $CA
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CURS_X = $CB
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GrafMode = $CC
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LastIndex = $CD
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LastLine = $CE
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LastCol = $CF
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crsw = $D0
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KeyIndex = $D1
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QuoteSw = $D2
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Insrt = $D3
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Config = $D4
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LastLinePos = $D5
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PgmKeyIndex = $D6
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RepeatCount = $D7
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RepeatDelay = $D8
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ModKey = $E0
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NorKey = $E1
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CURS_FLAG = $E6 ; 1 = no cursor
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CURS_BLINK = $E7 ; cursor blink counter
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CRAM_PTR = $E8
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CURS_STATE = $EB ; Cursor blink state
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CHARCOLOR = $EC
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CURS_COLOR = $ED ; Color behind cursor
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;-----------------------------------------------------------------------------
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; Page 3 variables
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;
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; system ram vectors
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;
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IRQVec = $0300
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BRKVec = $0302
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NMIVec = $0304
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;
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;
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;
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LogicalAdrTable = $0334
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FirstAdrTable = $033E
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SecondAdrTable = $0348
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SysMemBot = $0352
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SysMemTop = $0355
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UsrMemBot = $0358
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UsrMemTop = $035B
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DevTabIndex = $0360
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PgmKeyEnd = $0380
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PgmKeySeg = $0382
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RVS = $0383
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LastPrtChar = $0399
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InsertFlag = $039A
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ScrollFlag = $039B
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PgmKeyIdx = $039D
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LogScrollFlag = $039E
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BellMode = $039F ; Bell on/off 00 = an
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SegSave = $03A0
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TabStopTable = $03A1 ; 80 bits for tabstops
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KeyBuf = $03AB ; Keyboard buffer
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; ---------------------------------------------------------------------------
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; Screen size
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XSIZE = 40
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YSIZE = 25
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;-----------------------------------------------------------------------------
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; I/O Definitions
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; I/O $d800: VIC
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VIC_SPR0_X = $00
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VIC_SPR0_Y = $01
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VIC_SPR1_X = $02
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VIC_SPR1_Y = $03
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VIC_SPR2_X = $04
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VIC_SPR2_Y = $05
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VIC_SPR3_X = $06
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VIC_SPR3_Y = $07
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VIC_SPR4_X = $08
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VIC_SPR4_Y = $09
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VIC_SPR5_X = $0A
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VIC_SPR5_Y = $0B
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VIC_SPR6_X = $0C
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VIC_SPR6_Y = $0D
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VIC_SPR7_X = $0E
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VIC_SPR7_Y = $0F
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VIC_SPR_HI_X = $10
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VIC_SPR_ENA = $15
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VIC_SPR_EXP_Y = $17
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VIC_SPR_EXP_X = $1D
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VIC_SPR_MCOLOR = $1C
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VIC_SPR_BG_PRIO = $1B
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VIC_SPR_MCOLOR0 = $25
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VIC_SPR_MCOLOR1 = $26
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VIC_SPR0_COLOR = $27
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VIC_SPR1_COLOR = $28
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VIC_SPR2_COLOR = $29
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VIC_SPR3_COLOR = $2A
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VIC_SPR4_COLOR = $2B
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VIC_SPR5_COLOR = $2C
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VIC_SPR6_COLOR = $2D
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VIC_SPR7_COLOR = $2E
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VIC_CTRL1 = $11
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VIC_CTRL2 = $16
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VIC_HLINE = $12
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VIC_VIDEO_ADR = $18
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VIC_IRR = $19 ; Interrupt request register
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VIC_IMR = $1A ; Interrupt mask register
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VIC_BORDERCOLOR = $20
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VIC_BG_COLOR0 = $21
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VIC_BG_COLOR1 = $22
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VIC_BG_COLOR2 = $23
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VIC_BG_COLOR3 = $24
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; I/O $da00: SID 6581
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SID_S1Lo = $00
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SID_S1Hi = $01
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SID_PB1Lo = $02
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SID_PB1Hi = $03
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SID_Ctl1 = $04
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SID_AD1 = $05
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SID_SUR1 = $06
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SID_S2Lo = $07
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SID_S2Hi = $08
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SID_PB2Lo = $09
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SID_PB2Hi = $0A
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SID_Ctl2 = $0B
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SID_AD2 = $0C
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SID_SUR2 = $0D
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SID_S3Lo = $0E
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SID_S3Hi = $0F
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SID_PB3Lo = $10
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SID_PB3Hi = $11
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SID_Ctl3 = $12
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SID_AD3 = $13
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SID_SUR3 = $14
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SID_FltLo = $15
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SID_FltHi = $16
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SID_FltCtl = $17
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SID_Amp = $18
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SID_ADConv1 = $19
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SID_ADConv2 = $1A
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SID_Noise = $1B
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SID_Read3 = $1C
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; I/O $db00: CIA 6526 Inter Process Communication
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; I/O $dc00: CIA 6526
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.struct CIA
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PRA .byte
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PRB .byte
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DDRA .byte
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DDRB .byte
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.union
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.struct
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TALO .byte
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TAHI .byte
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.endstruct
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TA .word
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.endunion
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.union
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.struct
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TBLO .byte
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TBHI .byte
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.endstruct
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TB .word
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.endunion
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TOD10 .byte
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TODSEC .byte
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TODMIN .byte
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TODHR .byte
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SDR .byte
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ICR .byte
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CRA .byte
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CRB .byte
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.endstruct
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; I/O $dd00: ACIA 6551
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.struct ACIA
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DATA .byte
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STATUS .byte
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CMD .byte
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CTRL .BYTE
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.endstruct
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; I/O $de00: Triport #1 6525
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; I/O $df00: Triport #2 6525
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.struct TPI
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PRA .byte
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PRB .byte
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.union
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PRC .byte
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INT .byte
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.endunion
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DDRA .byte
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DDRB .byte
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.union
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DDRC .byte
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IMR .byte
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.endunion
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CR .byte
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AIR .byte
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.endstruct
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; Out video memory address
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COLOR_RAM = $D400 ; System bank
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