snes-asm/greenspace.asm

.include "header.inc"
.include "snes_init.asm"

.BANK 0 SLOT 0
.ORG 0
.SECTION "maincode"

VBlank:
    rti

Start:

Snes_Init ; Initialize the SNES

;stz $1337

stz $2121 ;store zero in memory
lda #%11000000  ;3-green, 5-red
sta $2122
lda #%00000111  ;blank, 5-blue, 2-green
sta $2122
lda #$0f
sta $2100

lda #$3
oye:
    dea
    cmp #$00
    bne oye


ldx #$03
lvl3:
    lda #$ff
    lvl2:
        xba
        lda #$ff
        lvl1:
            dea
            cmp #$00
            bne lvl1
        xba
        dea
        cmp #$00
        bne lvl2
    stz $1337
    dex
    txa
    cmp #$00
    bne lvl3

stz $2121 ;store zero in memory
lda #%00111111  ;3-green, 5-red
sta $2122
lda #%00000000  ;blank, 5-blue, 2-green
sta $2122
lda #$0f
sta $2100


mainloop:
    jmp mainloop

.ENDS

.BANK 1
.ORG 0
.SECTION "TileData"


.ENDS