asm void on_reset() {
    SEI
    CLD
    LDX #$40
    STX $4017
    LDX #$ff
    TXS
    INX
    STX ppu_ctrl
    STX ppu_mask
    STX $4010
    BIT ppu_status
vwait1:
    BIT ppu_status
    BPL vwait1
vwait2:
    BIT ppu_status
    BPL vwait2


    LDA #$00
    LDX #$00
clean_byte:
    STA $000,x
    STA $100,x
    STA $200,x
    STA $300,x
    STA $400,x
    STA $500,x
    STA $600,x
    STA $700,x
    INX
    BNE clean_byte

    LDA #$00
    STA $2000
    STA $2001

    JMP main
    JMP on_reset
}

interrupt void on_irq() {
    irq()
}

interrupt void on_nmi() {
    nmi()
}

array nmi_vector @$FFFA = [
    on_nmi.addr.lo,
    on_nmi.addr.hi
]
array reset_vector @$FFFC = [
    on_reset.addr.lo,
    on_reset.addr.hi
]
array irq_vector @$FFFE = [
    on_irq.addr.lo,
    on_irq.addr.hi
]