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244 lines
11 KiB
Lua
244 lines
11 KiB
Lua
; Prog8 definitions for the Commodore-64
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; Including memory registers, I/O registers, Basic and Kernal subroutines.
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;
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; Written by Irmen de Jong (irmen@razorvine.net) - license: GNU GPL 3.0
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;
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; indent format: TABS, size=8
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~ c64 {
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const uword ESTACK_LO = $ce00 ; evaluation stack (lsb)
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const uword ESTACK_HI = $cf00 ; evaluation stack (msb)
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&ubyte SCRATCH_ZPB1 = $02 ; scratch byte 1 in ZP
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&ubyte SCRATCH_ZPREG = $03 ; scratch register in ZP
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&ubyte SCRATCH_ZPREGX = $fa ; temp storage for X register (stack pointer)
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&uword SCRATCH_ZPWORD1 = $fb ; scratch word in ZP ($fb/$fc)
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&uword SCRATCH_ZPWORD2 = $fd ; scratch word in ZP ($fd/$fe)
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&ubyte TIME_HI = $a0 ; software jiffy clock, hi byte
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&ubyte TIME_MID = $a1 ; .. mid byte
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&ubyte TIME_LO = $a2 ; .. lo byte. Updated by IRQ every 1/60 sec
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&ubyte STKEY = $91 ; various keyboard statuses (updated by IRQ)
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&ubyte SFDX = $cb ; current key pressed (matrix value) (updated by IRQ)
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&ubyte COLOR = $0286 ; cursor color
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&ubyte HIBASE = $0288 ; screen base address / 256 (hi-byte of screen memory address)
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&uword CINV = $0314 ; IRQ vector
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&uword NMI_VEC = $FFFA ; 6502 nmi vector, determined by the kernal if banked in
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&uword RESET_VEC = $FFFC ; 6502 reset vector, determined by the kernal if banked in
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&uword IRQ_VEC = $FFFE ; 6502 interrupt vector, determined by the kernal if banked in
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; the default addresses for the character screen chars and colors
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const uword Screen = $0400 ; to have this as an array[40*25] the compiler would have to support array size > 255
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const uword Colors = $d800 ; to have this as an array[40*25] the compiler would have to support array size > 255
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; the default locations of the 8 sprite pointers (store address of sprite / 64)
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&ubyte SPRPTR0 = 2040
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&ubyte SPRPTR1 = 2041
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&ubyte SPRPTR2 = 2042
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&ubyte SPRPTR3 = 2043
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&ubyte SPRPTR4 = 2044
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&ubyte SPRPTR5 = 2045
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&ubyte SPRPTR6 = 2046
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&ubyte SPRPTR7 = 2047
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&ubyte[8] SPRPTR = 2040 ; the 8 sprite pointers as an array.
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; ---- VIC-II 6567/6569/856x registers ----
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&ubyte SP0X = $d000
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&ubyte SP0Y = $d001
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&ubyte SP1X = $d002
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&ubyte SP1Y = $d003
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&ubyte SP2X = $d004
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&ubyte SP2Y = $d005
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&ubyte SP3X = $d006
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&ubyte SP3Y = $d007
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&ubyte SP4X = $d008
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&ubyte SP4Y = $d009
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&ubyte SP5X = $d00a
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&ubyte SP5Y = $d00b
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&ubyte SP6X = $d00c
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&ubyte SP6Y = $d00d
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&ubyte SP7X = $d00e
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&ubyte SP7Y = $d00f
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&ubyte[16] SPXY = $d000 ; the 8 sprite X and Y registers as an array.
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&uword[8] SPXYW = $d000 ; the 8 sprite X and Y registers as a combined xy word array.
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&ubyte MSIGX = $d010
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&ubyte SCROLY = $d011
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&ubyte RASTER = $d012
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&ubyte LPENX = $d013
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&ubyte LPENY = $d014
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&ubyte SPENA = $d015
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&ubyte SCROLX = $d016
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&ubyte YXPAND = $d017
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&ubyte VMCSB = $d018
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&ubyte VICIRQ = $d019
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&ubyte IREQMASK = $d01a
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&ubyte SPBGPR = $d01b
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&ubyte SPMC = $d01c
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&ubyte XXPAND = $d01d
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&ubyte SPSPCL = $d01e
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&ubyte SPBGCL = $d01f
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&ubyte EXTCOL = $d020 ; border color
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&ubyte BGCOL0 = $d021 ; screen color
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&ubyte BGCOL1 = $d022
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&ubyte BGCOL2 = $d023
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&ubyte BGCOL4 = $d024
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&ubyte SPMC0 = $d025
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&ubyte SPMC1 = $d026
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&ubyte SP0COL = $d027
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&ubyte SP1COL = $d028
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&ubyte SP2COL = $d029
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&ubyte SP3COL = $d02a
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&ubyte SP4COL = $d02b
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&ubyte SP5COL = $d02c
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&ubyte SP6COL = $d02d
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&ubyte SP7COL = $d02e
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&ubyte[8] SPCOL = $d027
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; ---- end of VIC-II registers ----
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; ---- CIA 6526 1 & 2 registers ----
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&ubyte CIA1PRA = $DC00 ; CIA 1 DRA, keyboard column drive (and joystick control port #2)
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&ubyte CIA1PRB = $DC01 ; CIA 1 DRB, keyboard row port (and joystick control port #1)
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&ubyte CIA1DDRA = $DC02 ; CIA 1 DDRA, keyboard column
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&ubyte CIA1DDRB = $DC03 ; CIA 1 DDRB, keyboard row
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&ubyte CIA1TAL = $DC04 ; CIA 1 timer A low byte
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&ubyte CIA1TAH = $DC05 ; CIA 1 timer A high byte
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&ubyte CIA1TBL = $DC06 ; CIA 1 timer B low byte
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&ubyte CIA1TBH = $DC07 ; CIA 1 timer B high byte
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&ubyte CIA1TOD10 = $DC08 ; time of day, 1/10 sec.
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&ubyte CIA1TODSEC = $DC09 ; time of day, seconds
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&ubyte CIA1TODMMIN = $DC0A ; time of day, minutes
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&ubyte CIA1TODHR = $DC0B ; time of day, hours
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&ubyte CIA1SDR = $DC0C ; Serial Data Register
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&ubyte CIA1ICR = $DC0D
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&ubyte CIA1CRA = $DC0E
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&ubyte CIA1CRB = $DC0F
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&ubyte CIA2PRA = $DD00 ; CIA 2 DRA, serial port and video address
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&ubyte CIA2PRB = $DD01 ; CIA 2 DRB, RS232 port / USERPORT
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&ubyte CIA2DDRA = $DD02 ; CIA 2 DDRA, serial port and video address
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&ubyte CIA2DDRB = $DD03 ; CIA 2 DDRB, RS232 port / USERPORT
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&ubyte CIA2TAL = $DD04 ; CIA 2 timer A low byte
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&ubyte CIA2TAH = $DD05 ; CIA 2 timer A high byte
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&ubyte CIA2TBL = $DD06 ; CIA 2 timer B low byte
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&ubyte CIA2TBH = $DD07 ; CIA 2 timer B high byte
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&ubyte CIA2TOD10 = $DD08 ; time of day, 1/10 sec.
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&ubyte CIA2TODSEC = $DD09 ; time of day, seconds
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&ubyte CIA2TODMIN = $DD0A ; time of day, minutes
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&ubyte CIA2TODHR = $DD0B ; time of day, hours
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&ubyte CIA2SDR = $DD0C ; Serial Data Register
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&ubyte CIA2ICR = $DD0D
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&ubyte CIA2CRA = $DD0E
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&ubyte CIA2CRB = $DD0F
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; ---- end of CIA registers ----
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; ---- SID 6581/8580 registers ----
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&ubyte FREQLO1 = $D400 ; channel 1 freq lo
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&ubyte FREQHI1 = $D401 ; channel 1 freq hi
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&uword FREQ1 = $D400 ; channel 1 freq (word)
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&ubyte PWLO1 = $D402 ; channel 1 pulse width lo (7-0)
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&ubyte PWHI1 = $D403 ; channel 1 pulse width hi (11-8)
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&uword PW1 = $D402 ; channel 1 pulse width (word)
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&ubyte CR1 = $D404 ; channel 1 voice control register
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&ubyte AD1 = $D405 ; channel 1 attack & decay
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&ubyte SR1 = $D406 ; channel 1 sustain & release
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&ubyte FREQLO2 = $D407 ; channel 2 freq lo
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&ubyte FREQHI2 = $D408 ; channel 2 freq hi
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&uword FREQ2 = $D407 ; channel 2 freq (word)
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&ubyte PWLO2 = $D409 ; channel 2 pulse width lo (7-0)
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&ubyte PWHI2 = $D40A ; channel 2 pulse width hi (11-8)
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&uword PW2 = $D409 ; channel 2 pulse width (word)
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&ubyte CR2 = $D40B ; channel 2 voice control register
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&ubyte AD2 = $D40C ; channel 2 attack & decay
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&ubyte SR2 = $D40D ; channel 2 sustain & release
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&ubyte FREQLO3 = $D40E ; channel 3 freq lo
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&ubyte FREQHI3 = $D40F ; channel 3 freq hi
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&uword FREQ3 = $D40E ; channel 3 freq (word)
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&ubyte PWLO3 = $D410 ; channel 3 pulse width lo (7-0)
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&ubyte PWHI3 = $D411 ; channel 3 pulse width hi (11-8)
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&uword PW3 = $D410 ; channel 3 pulse width (word)
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&ubyte CR3 = $D412 ; channel 3 voice control register
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&ubyte AD3 = $D413 ; channel 3 attack & decay
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&ubyte SR3 = $D414 ; channel 3 sustain & release
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&ubyte FCLO = $D415 ; filter cutoff lo (2-0)
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&ubyte FCHI = $D416 ; filter cutoff hi (10-3)
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&uword FC = $D415 ; filter cutoff (word)
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&ubyte RESFILT = $D417 ; filter resonance and routing
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&ubyte MVOL = $D418 ; filter mode and main volume control
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&ubyte POTX = $D419 ; potentiometer X
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&ubyte POTY = $D41A ; potentiometer Y
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&ubyte OSC3 = $D41B ; channel 3 oscillator value read
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&ubyte ENV3 = $D41C ; channel 3 envelope value read
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; ---- end of SID registers ----
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; ---- C64 basic routines ----
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asmsub CLEARSCR () clobbers(A,X,Y) = $E544 ; clear the screen
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asmsub HOMECRSR () clobbers(A,X,Y) = $E566 ; cursor to top left of screen
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; ---- end of C64 basic routines ----
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; ---- C64 kernal routines ----
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asmsub STROUT (uword strptr @ AY) clobbers(A, X, Y) = $AB1E ; print null-terminated string (use c64scr.print instead)
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asmsub IRQDFRT () clobbers(A,X,Y) = $EA31 ; default IRQ routine
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asmsub IRQDFEND () clobbers(A,X,Y) = $EA81 ; default IRQ end/cleanup
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asmsub CINT () clobbers(A,X,Y) = $FF81 ; (alias: SCINIT) initialize screen editor and video chip
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asmsub IOINIT () clobbers(A, X) = $FF84 ; initialize I/O devices (CIA, SID, IRQ)
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asmsub RAMTAS () clobbers(A,X,Y) = $FF87 ; initialize RAM, tape buffer, screen
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asmsub RESTOR () clobbers(A,X,Y) = $FF8A ; restore default I/O vectors
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asmsub VECTOR (ubyte dir @ Pc, uword userptr @ XY) clobbers(A,Y) = $FF8D ; read/set I/O vector table
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asmsub SETMSG (ubyte value @ A) = $FF90 ; set Kernal message control flag
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asmsub SECOND (ubyte address @ A) clobbers(A) = $FF93 ; (alias: LSTNSA) send secondary address after LISTEN
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asmsub TKSA (ubyte address @ A) clobbers(A) = $FF96 ; (alias: TALKSA) send secondary address after TALK
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asmsub MEMTOP (ubyte dir @ Pc, uword address @ XY) -> uword @ XY = $FF99 ; read/set top of memory pointer
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asmsub MEMBOT (ubyte dir @ Pc, uword address @ XY) -> uword @ XY = $FF9C ; read/set bottom of memory pointer
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asmsub SCNKEY () clobbers(A,X,Y) = $FF9F ; scan the keyboard
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asmsub SETTMO (ubyte timeout @ A) = $FFA2 ; set time-out flag for IEEE bus
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asmsub ACPTR () -> ubyte @ A = $FFA5 ; (alias: IECIN) input byte from serial bus
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asmsub CIOUT (ubyte databyte @ A) = $FFA8 ; (alias: IECOUT) output byte to serial bus
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asmsub UNTLK () clobbers(A) = $FFAB ; command serial bus device to UNTALK
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asmsub UNLSN () clobbers(A) = $FFAE ; command serial bus device to UNLISTEN
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asmsub LISTEN (ubyte device @ A) clobbers(A) = $FFB1 ; command serial bus device to LISTEN
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asmsub TALK (ubyte device @ A) clobbers(A) = $FFB4 ; command serial bus device to TALK
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asmsub READST () -> ubyte @ A = $FFB7 ; read I/O status word
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asmsub SETLFS (ubyte logical @ A, ubyte device @ X, ubyte address @ Y) = $FFBA ; set logical file parameters
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asmsub SETNAM (ubyte namelen @ A, str filename @ XY) = $FFBD ; set filename parameters
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asmsub OPEN () clobbers(A,X,Y) = $FFC0 ; (via 794 ($31A)) open a logical file
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asmsub CLOSE (ubyte logical @ A) clobbers(A,X,Y) = $FFC3 ; (via 796 ($31C)) close a logical file
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asmsub CHKIN (ubyte logical @ X) clobbers(A,X) = $FFC6 ; (via 798 ($31E)) define an input channel
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asmsub CHKOUT (ubyte logical @ X) clobbers(A,X) = $FFC9 ; (via 800 ($320)) define an output channel
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asmsub CLRCHN () clobbers(A,X) = $FFCC ; (via 802 ($322)) restore default devices
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asmsub CHRIN () clobbers(Y) -> ubyte @ A = $FFCF ; (via 804 ($324)) input a character (for keyboard, read a whole line from the screen) A=byte read.
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asmsub CHROUT (ubyte char @ A) = $FFD2 ; (via 806 ($326)) output a character
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asmsub LOAD (ubyte verify @ A, uword address @ XY) -> ubyte @Pc, ubyte @ A, ubyte @ X, ubyte @ Y = $FFD5 ; (via 816 ($330)) load from device
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asmsub SAVE (ubyte zp_startaddr @ A, uword endaddr @ XY) -> ubyte @ Pc, ubyte @ A = $FFD8 ; (via 818 ($332)) save to a device
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asmsub SETTIM (ubyte low @ A, ubyte middle @ X, ubyte high @ Y) = $FFDB ; set the software clock
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asmsub RDTIM () -> ubyte @ A, ubyte @ X, ubyte @ Y = $FFDE ; read the software clock
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asmsub STOP () clobbers(A,X) -> ubyte @ Pz, ubyte @ Pc = $FFE1 ; (via 808 ($328)) check the STOP key
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asmsub GETIN () clobbers(X,Y) -> ubyte @ A = $FFE4 ; (via 810 ($32A)) get a character
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asmsub CLALL () clobbers(A,X) = $FFE7 ; (via 812 ($32C)) close all files
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asmsub UDTIM () clobbers(A,X) = $FFEA ; update the software clock
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asmsub SCREEN () -> ubyte @ X, ubyte @ Y = $FFED ; read number of screen rows and columns
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asmsub PLOT (ubyte dir @ Pc, ubyte col @ Y, ubyte row @ X) -> ubyte @ X, ubyte @ Y = $FFF0 ; read/set position of cursor on screen. Use c64scr.plot for a 'safe' wrapper that preserves X.
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asmsub IOBASE () -> uword @ XY = $FFF3 ; read base address of I/O devices
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; ---- end of C64 kernal routines ----
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}
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