.inesprg 1   ; 1x 16KB PRG code
  .ineschr 1   ; 1x  8KB CHR data
  .inesmap 0   ; mapper 0 = NROM, no bank swapping
  .inesmir 1   ; background mirroring
  
;;;;;;;;;;;;;;;

  .bank 0
  .org $C000 
RESET:
  SEI          ; disable IRQs
  CLD          ; disable decimal mode
  LDX #$40	
  STX $4017    ; disable APU frame IRQ
  LDX #$FF	
  TXS          ; Set up stack
  INX          ; now X = 0
  STX $2000    ; disable NMI
  STX $2001    ; disable rendering
  STX $4010    ; disable DMC IRQs

vblankwait1:       ; First wait for vblank to make sure PPU is ready
  BIT $2002
  BPL vblankwait1

clrmem:
  LDA #$00
  STA $0000, x
  STA $0100, x
  STA $0400, x
  STA $0500, x
  STA $0600, x
  STA $0700, x
  LDA #$FE
  STA $0300, x
  INX
  BNE clrmem
   
vblankwait2:      ; Second wait for vblank, PPU is ready after this
  BIT $2002
  BPL vblankwait2

Foreverloop:
  JMP Foreverloop     ;jump back to Forever, infinite loop

IRQ:
NMI:
  RTI
 
;;;;;;;;;;;;;;  

  .bank 1
  .org $FFFA
  .dw NMI
  .dw RESET
  .dw IRQ
  
;;;;;;;;;;;;;;  

  .bank 2
  .org $0000
  .incbin "jroatch.chr"   ;include CHR ROM