learn.s

ENIAS_TILE_ADDRESS=$B000
ENIAS_SPRITE_ADDRESS=$F400
ENIAS_PALETTE_ADDRESS=$F500
ENIAS_NAMETABLE_ADDRESS=$F000

    .org $0200

    ldx #$00 ; offset into sprite-table

    lda #$00
    sta ENIAS_SPRITE_ADDRESS,x ; x-position
    inx

    lda #$00
    sta ENIAS_SPRITE_ADDRESS,x ; y-position
    inx

    lda #$21
    sta ENIAS_SPRITE_ADDRESS,x ; tile-index

    rts

.segment "GFX_SPRITES"
    .repeat 64
        .byte $00, $FE, $44, $80
    .endrepeat

.segment "GFX_NAMETABLE"
    .repeat 768
        .byte $00
    .endrepeat

.segment "GFX_TILES"
    .incbin "enias-font.bin"

.segment "GFX_PALETTE"
    .incbin "default_palette.bin"