Loading Charpad Map Data

; Example of loading a Charpad Map Fullscreen 1000 bytes
; Some code adapted from c64brain's example.


;Include custom characters file
;* = $3800
;chars
;!bin "./chars/blade_runner.bin",512


;Boot loader
!source "./libs/loader.asm"
+start_at $8000

;       lda #%00011110  ; Point toward custom characters
;       sta $d018


        lda #$00        ; Change Screen/Border Colors
        sta $d020
        sta $d021

        jsr drawmap
        rts


drawmap
        lda   #$00
        sta   $fb
        lda   #$04
        sta   $fc            ;0+4*256 = 1024
        ldx   #$00
        lda   screenlo,x
        sta   $fd
        lda   screenhi,x
        sta   $fe

        ldx   #$03
sethi
        ldy     #$00
setlow
        lda   ($fd),y        ;map
        sta   ($fb),y        ;1024,x
        iny
        cpy   #$ff
        bne   setlow
        inc   $fc
        inc   $fe
        dex
        bne   sethi
        rts



screenlo    !byte <map
screenhi    !byte >map

map
!bin "map.raw"