File: nesasm

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ruby-rouge 4.7.0-1
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  .bank 0
  .org $C000
Reset:	
        jsr WaitSync	; wait for VSYNC
        jsr ClearRAM	; clear RAM
        jsr WaitSync	; wait for VSYNC (and PPU warmup)

	lda #$3f	; $3F -> A register
        ldy #$00	; $00 -> Y register
        sta PPU_ADDR	; write #HIGH byte first
        sty PPU_ADDR    ; $3F00 -> PPU address