header.asm

MACRO nsf_bank_define const
	.db (const << 1)
	.db (const << 1) + 1
ENDM
.org 0

NSF_TRACKS = 92
IFDEF PLAY_NSF_CRIES
	NSF_TRACKS = 251
ENDIF
IFDEF PLAY_NSF_SFX
	IFNDEF BETA_SFX
		NSF_TRACKS = 188
	ELSE
		NSF_TRACKS = 189
	ENDIF
ENDIF

IFNDEF NSF_FILE
; pokemon gold header specs
; MAP: MMC5
; PRG: 1024K
; CHR: 1024K
; RAM: 128K + 2K internal + 1K Chip
; TOTAL: 2179K
	.db "NES", $1a ; NES + end of file command
	.db $40 ; 1 megabyte of PRG data
	.db $80 ; 1 megabyte of CHR data
	.db (MMC5 & $0f) * 16 | IGNORE_MIRRORING | BATTERY_RAM
	.db (MMC5 & $f0)      | NES_2_0
	.db 0, 0 ; unused
	.db $bb ; 128 kilobytes of PRG RAM
	.db 0
	.db 0 ; NTSC
	.db 0, 0, 0 ; unused
ELSE
	.db "NESM", $1a ; handshake
	.db $1 ; version
	.db NSF_TRACKS ; songs
	.db $1 ; starting song
	.dw LOAD
	.dw INIT
	.dw PLAY
	.db "POKEMON GOLD"
.pad $2e, $00
	.db "J. MASUDA, G. ICHINOSE, M. AOKI"
.pad $4e, $00
	.db "1999 Game Freak"
.pad $6e, $00
	.dw $40ff ; NTSC
	.db (PRG_Audio << 2)
	.db (PRG_Audio << 2) + 1
	.db (PRG_Audio << 2) + 2
	.db (PRG_Audio << 2) + 3
	.db (PRG_DPCM0 << 1)
	.db (PRG_DPCM0 << 1) + 1
	.db PRG_Home
	.db PRG_Home + 1
	.dw $4e1d ; PAL, unused
	.db 0 ; this is an NTSC file
	.db %00001000 ; MMC5 registers enabled, 2A03 only though
	.dsb 4, 0 ; proceeding data is program data
ENDIF