nes-mm5-demo/asm/crt0.asm

;****************
; Author: Safyrus
;****************

.ifdef C_CODE
.export _exit,__STARTUP__:absolute=1
.import _main
.endif

; Header of the file (not part of the cartridge, used by the emulator)
.segment "HEADER"
    .byte "NES", $1A; 0-3: Header
    .byte $02       ;   4: PRG ROM
    .byte $01       ;   5: CHR ROM
.if MMC5=1
    .byte $51       ;   6: Flags 6
.else
    .byte $01       ;   6: Flags 6
.endif
    .byte $00       ;   7: Flags 7
    .byte $00       ;   8: Flags 8
    .byte $00       ;   9: Flags 9
    .byte $00       ;  10: Flags 10
    .byte $00,$00,$00,$00,$00   ; Padding

.include "constant.asm"
.include "macro.asm"
.include "memory.asm"

; This is the code to use when using the MMC5 mapper
.if MMC5=1
    .segment "LAST_BNK"
        ; 6502 vectors subrountines
        .include "vector/rst.asm"
        .include "vector/nmi.asm"
        .include "vector/irq.asm"

    .if FAMISTUDIO=1
        ; FamiStudio Sound Engine
        .include "audio/famistudio_config.asm"
        .include "audio/famistudio_ca65.s"
    .endif


    .segment "STARTUP"
    .ifdef C_CODE
    _exit:
    .endif

    .ifndef C_CODE
        ; main file
        .include "main.asm"
    .endif


    .segment "BNK1"
    .if FAMISTUDIO=1
        ; Musics
        .include "audio/music/arpeggio_mmc5.s"
    .endif


; This is the code to use when not using any mapper
.else
    .segment "STARTUP"
    .ifdef C_CODE
    _exit:
    .endif

        ; 6502 vectors subrountines
        .include "vector/rst.asm"
        .include "vector/nmi.asm"
        .include "vector/irq.asm"

    .ifndef C_CODE
        ; main file
        .include "main.asm"
    .endif

    .if FAMISTUDIO=1
        ; FamiStudio Sound Engine
        .include "audio/famistudio_config.asm"
        .include "audio/famistudio_ca65.s"

        ; Musics
        .include "audio/music/arpeggio.s"

    .endif
.endif


; 6502 vectors
.segment "VECTORS"
    ; 6502 vectors
    .word NMI    ; fffa nmi/vblank
    .word RST    ; fffc reset
    .word IRQ    ; fffe irq/brk


; CHR ROM data 
.segment "CHARS"
.incbin GAME_CHR