2020/c64/main.asm

// vim: filetype=kickass

#import "math.inc"

* = $0801                               // BASIC start address (#2049)
.byte $0d,$08,$dc,$07,$9e,$20,$34,$39   // BASIC loader to start at $c000...
.byte $31,$35,$32,$00,$00,$00           // puts BASIC line 2012 SYS 49152

* = $c000

.const SCREEN_RAM = $0400
.const COLOR_RAM = $d800

.const kernal_scinit = $ff81
.const kernal_chrout = $ffd2
.const kernal_write_byte = $e716

.const zp_temp = $02
.const cursor_pointer_lo = $05
.const cursor_pointer_hi = $06

.macro move_16_imm(dst_lo, dst_hi, src) {
    lda #<src
    sta dst_lo
    lda #>src
    sta dst_hi
}

//
// main
//
main:
    jsr clear_screen

    // lda #0
    // sta $d020
    // sta $d021

    jsr day01

!loop:
    // inc $d020
    jmp !loop-


buffer:
    .fill $0100, 0


#import "day01.asm"
#import "screen.asm"