.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
  jsr main
main: {
    ldy #0
    ldx #$64
  b1:
    dex
    cpx #0
    bne b2
    rts
  b2:
    cpx #$32
    bcc b4
    beq b4
    iny
    jmp b1
  b4:
    dey
    jmp b1
}
