mirror of
https://github.com/cc65/cc65.git
synced 2024-12-25 02:29:52 +00:00
197 lines
4.2 KiB
PHP
197 lines
4.2 KiB
PHP
;
|
|
; Zero page variables and I/O definitions for the CBM 510
|
|
;
|
|
; Taken from a kernal disassembly done by myself in 2000/2001.
|
|
;
|
|
; 2001-09-13, Ullrich von Bassewitz
|
|
; 2013-08-26, Greg King
|
|
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Zeropage stuff
|
|
|
|
ExecReg := $00 ; Controls execution memory bank
|
|
IndReg := $01 ; Controls indirect indexed load-store bank
|
|
|
|
TXTPTR := $85 ; Far pointer into BASIC source code
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Screen size
|
|
|
|
XSIZE = 40
|
|
YSIZE = 25
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; I/O Definitions
|
|
; Note: These numbers aren't addresses. They are offsets from the start of
|
|
; each chip's register set. They are used in the indirect indexed addressing
|
|
; mode.
|
|
|
|
; I/O $d800: VIC-II
|
|
|
|
VIC_SPR0_X = $00
|
|
VIC_SPR0_Y = $01
|
|
VIC_SPR1_X = $02
|
|
VIC_SPR1_Y = $03
|
|
VIC_SPR2_X = $04
|
|
VIC_SPR2_Y = $05
|
|
VIC_SPR3_X = $06
|
|
VIC_SPR3_Y = $07
|
|
VIC_SPR4_X = $08
|
|
VIC_SPR4_Y = $09
|
|
VIC_SPR5_X = $0A
|
|
VIC_SPR5_Y = $0B
|
|
VIC_SPR6_X = $0C
|
|
VIC_SPR6_Y = $0D
|
|
VIC_SPR7_X = $0E
|
|
VIC_SPR7_Y = $0F
|
|
VIC_SPR_HI_X = $10
|
|
VIC_SPR_ENA = $15
|
|
VIC_SPR_EXP_Y = $17
|
|
VIC_SPR_EXP_X = $1D
|
|
VIC_SPR_MCOLOR = $1C
|
|
VIC_SPR_BG_PRIO = $1B
|
|
|
|
VIC_SPR_MCOLOR0 = $25
|
|
VIC_SPR_MCOLOR1 = $26
|
|
|
|
VIC_SPR0_COLOR = $27
|
|
VIC_SPR1_COLOR = $28
|
|
VIC_SPR2_COLOR = $29
|
|
VIC_SPR3_COLOR = $2A
|
|
VIC_SPR4_COLOR = $2B
|
|
VIC_SPR5_COLOR = $2C
|
|
VIC_SPR6_COLOR = $2D
|
|
VIC_SPR7_COLOR = $2E
|
|
|
|
VIC_CTRL1 = $11
|
|
VIC_CTRL2 = $16
|
|
|
|
VIC_HLINE = $12
|
|
|
|
VIC_LPEN_X = $13
|
|
VIC_LPEN_Y = $14
|
|
|
|
VIC_VIDEO_ADR = $18
|
|
|
|
VIC_IRR = $19 ; Interrupt request register
|
|
VIC_IMR = $1A ; Interrupt mask register
|
|
|
|
VIC_BORDERCOLOR = $20
|
|
VIC_BG_COLOR0 = $21
|
|
VIC_BG_COLOR1 = $22
|
|
VIC_BG_COLOR2 = $23
|
|
VIC_BG_COLOR3 = $24
|
|
|
|
|
|
; I/O $da00: SID 6581
|
|
|
|
SID_S1Lo = $00
|
|
SID_S1Hi = $01
|
|
SID_PB1Lo = $02
|
|
SID_PB1Hi = $03
|
|
SID_Ctl1 = $04
|
|
SID_AD1 = $05
|
|
SID_SUR1 = $06
|
|
|
|
SID_S2Lo = $07
|
|
SID_S2Hi = $08
|
|
SID_PB2Lo = $09
|
|
SID_PB2Hi = $0A
|
|
SID_Ctl2 = $0B
|
|
SID_AD2 = $0C
|
|
SID_SUR2 = $0D
|
|
|
|
SID_S3Lo = $0E
|
|
SID_S3Hi = $0F
|
|
SID_PB3Lo = $10
|
|
SID_PB3Hi = $11
|
|
SID_Ctl3 = $12
|
|
SID_AD3 = $13
|
|
SID_SUR3 = $14
|
|
|
|
SID_FltLo = $15
|
|
SID_FltHi = $16
|
|
SID_FltCtl = $17
|
|
SID_Amp = $18
|
|
SID_ADConv1 = $19
|
|
SID_ADConv2 = $1A
|
|
SID_Noise = $1B
|
|
SID_Read3 = $1C
|
|
|
|
|
|
; I/O $db00: CIA 6526, Inter Process Communication
|
|
; I/O $dc00: CIA 6526
|
|
|
|
.struct CIA
|
|
PRA .byte
|
|
PRB .byte
|
|
DDRA .byte
|
|
DDRB .byte
|
|
.union
|
|
.struct
|
|
TALO .byte
|
|
TAHI .byte
|
|
.endstruct
|
|
TA .word
|
|
.endunion
|
|
.union
|
|
.struct
|
|
TBLO .byte
|
|
TBHI .byte
|
|
.endstruct
|
|
TB .word
|
|
.endunion
|
|
TOD10 .byte
|
|
TODSEC .byte
|
|
TODMIN .byte
|
|
TODHR .byte
|
|
SDR .byte
|
|
ICR .byte
|
|
CRA .byte
|
|
CRB .byte
|
|
.endstruct
|
|
|
|
|
|
; I/O $dd00: ACIA 6551
|
|
|
|
.struct ACIA
|
|
DATA .byte
|
|
STATUS .byte
|
|
CMD .byte
|
|
CTRL .BYTE
|
|
.endstruct
|
|
|
|
|
|
; I/O $de00: Triport #1 6525
|
|
; I/O $df00: Triport #2 6525
|
|
|
|
.struct TPI
|
|
PRA .byte
|
|
PRB .byte
|
|
.union
|
|
PRC .byte
|
|
INT .byte
|
|
.endunion
|
|
DDRA .byte
|
|
DDRB .byte
|
|
.union
|
|
DDRC .byte
|
|
IMR .byte
|
|
.endunion
|
|
CR .byte
|
|
AIR .byte
|
|
.endstruct
|
|
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; Our video memory address
|
|
|
|
COLOR_RAM := $D400 ; System bank
|
|
|
|
|
|
;-----------------------------------------------------------------------------
|
|
|
|
BASIC_BUF := $FB5E ; Bank 0 location of command-line
|
|
BASIC_BUF_LEN = 162 ; Maximum length of command-line
|