68k program header: Difference between revisions
Jump to navigation
Jump to search
| Line 1: | Line 1: | ||
ASM ROM header templates. | ASM ROM header templates. | ||
== For cartridge systems == | ==For cartridge systems== | ||
{|class="regdef" | {|class="regdef" | ||
| Line 10: | Line 10: | ||
|$100 | |$100 | ||
|7 bytes | |7 bytes | ||
|"NEO-GEO" string (first cartridge recognition code) | |"NEO-GEO" string (first cartridge recognition code). | ||
|- | |- | ||
|$107 | |$107 | ||
|byte | |byte | ||
|System version (0 for cartridge systems, 1 or 2 for adapted cart games on Neo CD ?) | |System version (0 for cartridge systems, 1 or 2 for adapted cart games on Neo CD ?). | ||
|- | |- | ||
|$108 | |$108 | ||
|word | |word | ||
|[[NGH number]], 0000 prohibited | |[[NGH number]] in BCD, 0000 prohibited. | ||
|- | |- | ||
|$10A | |$10A | ||
|longword | |longword | ||
| | |Total [[P ROM]] data size in bytes. | ||
|- | |- | ||
|$10E | |$10E | ||
|longword | |longword | ||
|Pointer to backup RAM block (in [[68k user RAM]]) | |Pointer to backup RAM data block (in [[68k user RAM]]). The first 2 bytes are the [[debug DIPs]]. | ||
|- | |- | ||
|$112 | |$112 | ||
|word | |word | ||
|Size of the game save in bytes | |Size of the required game save data in bytes. | ||
|- | |- | ||
|$114 | |$114 | ||
|byte | |byte | ||
|Eye | |[[Eye catcher]] animation flag. 0=Done by system ROM, 1=Done by game, 2=Nothing. | ||
|- | |- | ||
|$115 | |$115 | ||
|byte | |byte | ||
|Sprite bank number (upper 8 bits of tile number) for the eye-catcher logo, if done by | |Sprite bank number (upper 8 bits of tile number) for the eye-catcher logo, if done by system ROM. | ||
|- | |- | ||
|$116 | |$116 | ||
|longword | |longword | ||
|Pointer to Japanese [[Software_DIPs|software DIPs settings layout]] | |Pointer to Japanese [[Software_DIPs|software DIPs settings layout]]. | ||
|- | |- | ||
|$11A | |$11A | ||
|longword | |longword | ||
|Pointer to US settings software DIPs settings layout | |Pointer to US settings software DIPs settings layout. | ||
|- | |- | ||
|$11E | |$11E | ||
|longword | |longword | ||
|Pointer to Euro settings software DIPs settings layout | |Pointer to Euro settings software DIPs settings layout. | ||
|- | |- | ||
|$122 | |$122 | ||
|6 bytes | |6 bytes | ||
|JMP to [[USER subroutine]] (code start) | |JMP to [[USER subroutine]] (code start). | ||
|- | |- | ||
|$128 | |$128 | ||
|6 bytes | |6 bytes | ||
|JMP to [[PLAYER_START subroutine]] | |JMP to [[PLAYER_START subroutine]]. | ||
|- | |- | ||
|$12E | |$12E | ||
|6 bytes | |6 bytes | ||
|JMP to [[DEMO_END subroutine]] | |JMP to [[DEMO_END subroutine]]. | ||
|- | |- | ||
|$134 | |$134 | ||
|6 bytes | |6 bytes | ||
|JMP to [[COIN_SOUND subroutine]] | |JMP to [[COIN_SOUND subroutine]]. | ||
|- | |- | ||
|$182 | |$182 | ||
|longword | |longword | ||
|Pointer to [[security code]] (second cartridge recognition code) | |Pointer to [[security code]] (second cartridge recognition code). | ||
|- | |- | ||
|$186 | |$186 | ||
|longword | |longword | ||
|Unknown (seems only set to 0x00000000 on boards containing Spanish software DIPs) | |Unknown (seems only set to 0x00000000 on boards containing Spanish software DIPs). | ||
|- | |- | ||
|$18A | |$18A | ||
|longword | |longword | ||
|Unknown (seems only set to 0x00000001 on boards containing Spanish software DIPs) | |Unknown (seems only set to 0x00000001 on boards containing Spanish software DIPs). | ||
|- | |- | ||
|$18E | |$18E | ||
|longword | |longword | ||
|Pointer to Spanish settings software DIPs settings layout (not all games use this) | |Pointer to Spanish settings software DIPs settings layout (not all games use this). | ||
|} | |} | ||
Revision as of 21:44, 11 September 2017
ASM ROM header templates.
For cartridge systems
| Address | Size | Description |
| $100 | 7 bytes | "NEO-GEO" string (first cartridge recognition code). |
| $107 | byte | System version (0 for cartridge systems, 1 or 2 for adapted cart games on Neo CD ?). |
| $108 | word | NGH number in BCD, 0000 prohibited. |
| $10A | longword | Total P ROM data size in bytes. |
| $10E | longword | Pointer to backup RAM data block (in 68k user RAM). The first 2 bytes are the debug DIPs. |
| $112 | word | Size of the required game save data in bytes. |
| $114 | byte | Eye catcher animation flag. 0=Done by system ROM, 1=Done by game, 2=Nothing. |
| $115 | byte | Sprite bank number (upper 8 bits of tile number) for the eye-catcher logo, if done by system ROM. |
| $116 | longword | Pointer to Japanese 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). |
| $186 | longword | Unknown (seems only set to 0x00000000 on boards containing Spanish software DIPs). |
| $18A | longword | Unknown (seems only set to 0x00000001 on boards containing Spanish software DIPs). |
| $18E | longword | Pointer to Spanish settings software DIPs settings layout (not all games use this). |
Minimal header (from Smkdan's sources)
No need for a complete 68k vector table.
org $0000
dc.l $10F300
org $0004
dc.l $C00402
org $0064
dc.l VBLANK ;IRQ handler
org $0100
dc.b "NEO-GEO",$00
org $0108
dc.w $1234 ;NGH
org $0122
jmp USER ;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 $4e75Full header (from some unknown example code)
org $0100
dc.b "NEO-GEO",$00
dc.w $1234 ;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 USER
jmp PLAYER_START
jmp DEMO_END
jmp COIN_SOUND
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 "For CD systems
org $100
dc.b "NEO-GEO",$02 ;CDDA flag
dc.w $1234 ;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