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c64.inc
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c64.inc
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;
; Copyright (c) 2023, Arvid Juskaitis ([email protected])
;
; C64 specific stuff
; 64tass dialect
;
.weak
c64_inc := true
.endweak
; unused mem locations 2, 251, 252, 253, 254 ($02, $FB, $FC, $FD, $FE)
; timer $a0-$a2 1/60 jitter
.if c64_inc
c64_inc := false
; Memory locations
C64_SCREEN = $0400
C64_COLOUR = $D800
C64_BORDER_COLOUR = $D020
C64_SCREEN_COLOUR = $D021
C64_SCREEN_CASE = $D018 ; 21 - upper, 23 - lower
C64_CURSOR_POS = $00d6 ; ??
C64_CURSOR_CTRL = $00cc
C64_CURSOR_COLOUR = $0286
; KERNAL Subroutines
C64_CHRIN = $ffe4
C64_CHROUT = $ffd2
C64_PRINT_LINE = $ab1e
C64_CLEAR_SCREEN = $e544
C64_HOME_CURSOR = $e566
C64_PLOT = $fff0 ; set/get cursor pos
; Colour constans
BLACK = 0
WHITE = 1
RED = 2
CYAN = 3
PURPLE = 4
GREEN = 5
BLUE = 6
YELLOW = 7
ORANGE = 8
BROWN = 9
LIGHT_RED = 10
DARK_GREY = 11
GREY = 12
LIGHT_GREEN = 13
LIGHT_BLUE = 14
LIGHT_GREY = 15
; POKE address, value
; prm1 - address
; prm1 - value
POKE .macro
lda #\2
sta \1
.endm
.fi ; c64_inc