View source for 68k program header

ASM ROM header templates.

== For cartridge systems ==

{|class="regdef"
|'''Address'''
|'''Size'''
|'''Description'''
|-
|$100
|8 bytes
|"NEO-GEO",$00 string (first cartridge recognition code)
|-
|$107
|byte
|System version (0)
|-
|$108
|word
|[[NGH number]]
|-
|$10A
|longword
|Program size in bytes
|-
|$10E
|longword
|Pointer to the game save block (in [[68k user RAM]]), will be stored in memcard.
|-
|$112
|word
|Size of the game save
|-
|$114
|byte
|Boot logo flag. 0=Done by BIOS, 1=Done by game, 2=Nothing
|-
|$115
|byte
|Sprite bank number (upper 8 bits of tile number) for the boot logo, if done by BIOS
|-
|$116
|longword
|Pointer to Japanese [[Software_DIPs|software DIPs settings layout]]
|-
|$11A
|longword
|Pointer to US settings software DIPs settings layout
|-
|$11E
|longword
|Pointer to Euro settings software DIPs settings layout
|-
|$122
|6 bytes
|JMP to [[USER subroutine]] (code start)
|-
|$128
|6 bytes
|JMP to [[PLAYER_START subroutine]]
|-
|$12E
|6 bytes
|JMP to [[DEMO_END subroutine]]
|-
|$134
|6 bytes
|JMP to [[COIN_SOUND subroutine]]
|-
|$182
|longword
|Pointer to [[security code]] (second cartridge recognition code)
|}

===Minimal header (from [[User:Smkdan|Smkdan's]] sources)===

No need for a complete [[68k vector table]].

<pre>
	org $0064
	dc.l VBLANK	;IRQ handler

	org $0100
	dc.b "NEO-GEO",$00

	org $0108
	dc.w $017	;NGH

	org $0122
	jmp Start	;entry

	org $0114
	dc.w $0100	;logo flag, don't show it just go straight to the entry point

	org $0182
	dc.l Code	;code pointer
Code:
	dc.l $76004A6D,$0A146600,$003C206D,$0A043E2D
	dc.l $0A0813C0,$00300001,$32100C01,$00FF671A
	dc.l $30280002,$B02D0ACE,$66103028,$0004B02D
	dc.l $0ACF6606,$B22D0AD0,$67085088,$51CFFFD4
	dc.l $36074E75,$206D0A04,$3E2D0A08,$3210E049
	dc.l $0C0100FF,$671A3010,$B02D0ACE,$66123028
	dc.l $0002E048,$B02D0ACF,$6606B22D,$0AD06708
	dc.l $588851CF,$FFD83607
	dc.w $4e75
</pre>


===Full header (from some unknown example code)===

<pre>
    org $0100
    dc.b "NEO-GEO",$00

    dc.w $0052        ;NGH
    dc.l $00080000    ;P ROM size
    dc.l $00100000    ;debug DIPs pointer
    dc.w $01          ;size of DIP data
    dc.b $00          ;let the BIOS show the logo
    dc.b $1B          ;first tile of the logo is $1B00
    dc.l JPConfig     ;Japanese config menu pointer
    dc.l USConfig     ;US config menu pointer
    dc.l EUConfig     ;European config menu pointer

    jmp        Start
    jmp        Start
    jmp        Start
    jmp        Start

    org $0182
    dc.l Code         ;code pointer
Code:
    dc.l $76004A6D,$0A146600,$003C206D,$0A043E2D
    dc.l $0A0813C0,$00300001,$32100C01,$00FF671A
    dc.l $30280002,$B02D0ACE,$66103028,$0004B02D
    dc.l $0ACF6606,$B22D0AD0,$67085088,$51CFFFD4
    dc.l $36074E75,$206D0A04,$3E2D0A08,$3210E049
    dc.l $0C0100FF,$671A3010,$B02D0ACE,$66123028
    dc.l $0002E048,$B02D0ACF,$6606B22D,$0AD06708
    dc.l $588851CF,$FFD83607
    dc.w $4e75

    ; Configuration menu layouts (soft DIPs)
 JPConfig:
    dc.b    "0123456789ABCDEF"                            ; Game name
    dc.b    $FF,$FF,$FF,$FF,$FF,$FF                       ; Special list
    dc.b    $24,$02,$00,$00,$00,$00,$00,$00,$00,$00       ; Option list
    dc.b    "LIVES       "
    dc.b    "1           "
    dc.b    "2           "
    dc.b    "3           "
    dc.b    "4           "
    dc.b    "HOW TO PLAY "
    dc.b    "WITH        "
    dc.b    "WITHOUT     "

 USConfig:
    dc.b    "0123456789ABCDEF"                            ; Game name
    dc.b    $FF,$FF,$FF,$FF,$FF,$FF                       ; Special list
    dc.b    $24,$02,$00,$00,$00,$00,$00,$00,$00,$00       ; Option list
    dc.b    "LIVES       "
    dc.b    "1           "
    dc.b    "2           "
    dc.b    "3           "
    dc.b    "4           "
    dc.b    "HOW TO PLAY "
    dc.b    "WITH        "
    dc.b    "WITHOUT     "

 EUConfig:
    dc.b    "0123456789ABCDEF"                            ; Game name
    dc.b    $FF,$FF,$FF,$FF,$FF,$FF                       ; Special list
    dc.b    $24,$02,$00,$00,$00,$00,$00,$00,$00,$00       ; Option list
    dc.b    "LIVES       "
    dc.b    "1           "
    dc.b    "2           "
    dc.b    "3           "
    dc.b    "4           "
    dc.b    "HOW TO PLAY "
    dc.b    "WITH        "
    dc.b    "WITHOUT     "
</pre>

==For CD systems==
<pre>
    org     $100
    dc.b    "NEO-GEO",$02           ;CDDA flag
    dc.w    $0052                   ;NGH
    dc.l    $00080000               ;P ROM size
    dc.l    $00100000               ;debug DIPs pointer
    dc.w    $01                     ;size of DIP data
    dc.b    $00                     ;let the BIOS show the logo
    dc.b    $1B                     ;first tile of the logo is $1B00
    dc.l    JPConfig                ;Japanese config menu pointer
    dc.l    USConfig                ;US config menu pointer
    dc.l    EUConfig                ;European config menu pointer

    org     $122
    jmp     Start

    org     $13A
    dc.w    $0000                   ;Z80 RAM address for CDDA commands
</pre>

[[Category:Base system]]
[[Category:Code]]