cc65/libsrc/c64/c64.inc

;
; C64 generic definitions. Stolen from Elite128
;


; ---------------------------------------------------------------------------
; Zero page, Commodore stuff

ST     	       	:= $90		; IEC status byte

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

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


; ---------------------------------------------------------------------------
; Kernal routines

; Direct entries
CLRSCR 	       	:= $E544
KBDREAD	       	:= $E5B4
NMIEXIT         := $FEBC

; ---------------------------------------------------------------------------
; 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_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_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: CIAs

CIA1   	       	:= $DC00
CIA1_PRA       	:= $DC00
CIA1_PRB       	:= $DC01
CIA1_DDRA      	:= $DC02
CIA1_DDRB      	:= $DC03
CIA1_ICR       	:= $DC0D
CIA1_CRA       	:= $DC0E
CIA1_CRB       	:= $DC0F

CIA2   	       	:= $DD00
CIA2_PRA       	:= $DD00
CIA2_PRB       	:= $DD01
CIA2_DDRA      	:= $DD02
CIA2_DDRB      	:= $DD03
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