NeoGeo Development Wiki - User contributions [en]

Replacement chip

2026-01-17T19:47:54Z

Defalt: Added CPLD replacement proposition

Dirty page for SNK chips replacements development.

Reading various [[http://newlifegames.com/nlg/index.php?topic=1859.0| repair logs]], it appears that dead or partially dead SNK chips are a common issue. It forces cannibalism and forcibly reduces the worldwide stock.

For preservation, it would be desirable to produce drop-in replacement chips to save original boards.

=Considered solutions=

Nobody likes rewiring to accomodate different pinouts, especially 80+ pins chips. Producing new ASICs is out of the question because of the price at low quantities, and because finding pin-compatible models todays would be difficult if not impossible.

The only solution would be adapter boards the size of the original chips, with castellated vias for surface mounting ?
[[User:Furrtek|Furrtek]] ([[User talk:Furrtek|talk]]) 18:41, 15 January 2016 (CET)

* Reconstruct the chip's logic with regular logic chips ? No: they're all too big. BGA parts aren't 5V compatible.
* Use 2 boards on top of each other with a mezzanine connector ? No, no, no.
* Use 1- or 2-gate SOT-23-5/6 chips ? Maybe in some cases, but would be expensive (long BOM, lots of parts to assemble).
* Use a CPLD ? Probably the best solution. Altera's MAX3000 and Xilinx's XC9500 are 5V-tolerant and are still available at reasonable prices.

=CPLD proposals=

*[[NEO-257]]: 53 I/Os, EPM3064 in TQFP100 ?
*[[NEO-273]]: Only used in cartridges, rarely dies. A clone wouldn't be that useful ?
*[[NEO-BUF]]: Really a pain, too small for QFP CPLDs. 74LVCH16245 in BGA56 ?
*[[PRO-C0]]: Need pinout, quite big so EPM3128 in TQFP144 ?
*[[NEO-C1]]: EPM3128 has enough I/Os, but too big in TQFP144.
*[[NEO-D0]]: 55 I/Os, EPM3064 in TQFP100 ?
*[[NEO-E0]]: 54 I/Os, EPM3064 in TQFP100 ?
*[[NEO-F0]]: 60 I/Os, EPM3064 in TQFP100 ?
*[[NEO-G0]]: 56 I/Os, EPM3064 in TQFP100 ?
*[[NEO-I0]]: 56 I/Os, EPM3064 in TQFP100 ?
*[[NEO-ZMC]]: Very small, can be found on AliExpress (January 2016). BGA ?
*[[NEO-ZMC2]]: 71 I/Os, EPM3128 in TQFP100 ?
*[[PCM]]: Only used in cartridges, rarely dies. 65 I/Os, EPM3064 in TQFP100 ? Or AFT1508AS. -7ns minimum ?
*[[NEO-DCR-T]], [[NEO-SDR-T]]: Need pinouts, probably same problem as for NEO-C1.

*LSPCs could be replaced but the I/O requirements directs to >$60 CPLDs.
*Line buffers ([[PRO-B0]], [[NEO-B1]]) could be replaced with MAX10's and level shifting ?. Might be too expensive.

==Altera==

MAX3000 I/Os.

*EPM3032: 34. $1.61
*EPM3064: 34 or 66. $2.93
*EPM3128: 80 (or 96 but doesn't fit). $9.89

==Xilinx==

XC9500/XL I/Os.

*XC9536: 34
*XC9536XL: 36. $1.46
*XC9572: 34, 69 or 72
*XC9572XL: 34, 38, 52 or 72. $2.86
*XC95108: 81. Hard to find.
*XC95144/XL: 81. $7.25

=Board proposals=

Which board houses are castellation friendly ? Is classic 1.6mm good ?

==QFP64R==
==QFP80R==
==QFP100R==

=Logic definitions=

See https://github.com/neogeodev/SNKVerilog

[[Category:Repairs]]
[[Category:Chips]]

Sockets

2026-01-17T15:35:43Z

Defalt: Added Omron XR2

There isn't much space in cartridges, so developers had to use low-profile sockets to hold the EPROMs in [[Cartridges#Development cartridges|cartridges]].

(Among others?), KEL's ICC12 ([[:File:ICC12series.pdf|datasheet]]) line of sockets was used.

It seems 3M's 400 series ([[:File:3M 400 series.pdf|datasheet]]) is the same. Did 3M buy KEL's ICC12 series?

In mid-1999, due to the discontinuance of KEL's ICC12 series, SNK switched to Omron XR2 sockets, which are still available to these days. (https://components.omron.com/us-en/products/connectors/XR2)

PROGBK1

2026-01-16T16:01:58Z

Defalt: /* V ROMs configuration */ Incompatibility with 27C322

[[File:Progbk1_mvs.jpg|thumb]]

The only non-protected board that can bankswitch and use all [[V ROM]] space. Really common and very useful for homebrew stuff or converts.

Often used as the PROG board in [[Neo Print]] cartridges.

=P ROMs configuration=

[[File:Progbk1p.png|650px]]

==EP ROMs /OE==

{| class="wikitable"
|-
!J1
!J2
|-
|/ROMOE
|/PORTOE
|}

==P2 ROM /CE==

{| class="wikitable"
|-
!J3
!J4
!J5
|-
|A18
|/A18
|GND (default)
|}

==P2 ROM /OE==

{| class="wikitable"
|-
!J6
!J7
!JB1
|-
|/ROMOE
|/PORTOE (default)
|/PORTOE, banks 0 and 1
|}

==P1 ROM /OE==

{| class="wikitable"
|-
!J8
!J9
!J10
!JB2
|-
|/PORTOE
|/PORTOE AND /ROMOE
|/ROMOE (default)
|/PORTOE, banks 2 and 3
|}

==P1 ROM /CE==

{| class="wikitable"
|-
!J11
!J12
!J13
|-
|A18
|/A18
|GND (default)
|}

==P1 ROM size==

{| class="wikitable"
|-
!JB3
!JB4
!Nothing
|-
|A19/NC is /PORTADRS (P1 is 16Mbit)
|A19/NC is BANK0 (because reasons?)
|P1 is 8Mbit
|}

==P2 ROM size==

{| class="wikitable"
|-
!JB5
!JB6
|-
|A20//BYTE is VCC (P2 is 16Mbit or less)
|A20//BYTE is BANK1 (P2 is 32Mbit)
|}

The [[P ROM|P1 ROM]] can be 4Mbit, 8Mbit or 16Mbit (27C400/27C800/27C160).
* ROMs can be halved and mapped to 0x000000~0x0FFFFF or 0x200000~0x2FFFFF.
* If P1 is 4Mbit or 8Mbit, then P2 can contain a bankswitched ROM (same type as P1 plus 27C322). P1 appears in 0x000000~0x0FFFFF. P2 bank appears in 0x200000~0x2FFFFF.

[[Bankswitching]] is done with the LS74. It's not needed if the game isn't banked. Any write to an odd address in the [[68k memory map|0x200000~0x2FFFFF]] range will set the bank.

=V ROMs configuration=

[[File:Progbk1v.png]]

There is a maximum of 4 [[V ROM]]s which can be 8Mbit, 16Mbit or 32Mbit (27C800/27C160) for a maximum total size of 4 * 4MiB = 16MiB.

27C322 cannot be used because the V ROM data bus is 8 bit (byte mode) and the 27C322 can only run in word mode.
This isn't an issue on original games since mask ROMs were able to output in byte mode, but programmable 42-pin ROMs physically lack a /BYTE pin.

To replace a 32Mbit V ROM, another memory IC has to be used, on an adapter board.

A 4Mbit ROM can also be used, but only if there's one and only if it's in the last used slot.

The size of the largest V ROM is selected with a pair of jumpers on 6 spots (3 possible choices).

{| class="wikitable"
|-
!Largest V ROM
!Jumper set
|-
|8Mbit (1MiB)
|JV1+JV2
|-
|16Mbit (2MiB)
|JV3+JV4
|-
|32Mbit (4MiB)
|JV5+JV6
|}

This pair of V ROM jumpers effectively choose a set of 2 of the [[PCM]] chip address outputs to input to the LS139, which will enable one out of the 4 V ROMs at a time.

The JV7 to JV14 jumpers need to be set according to the ROM types. If it's less than 32Mbit, the JV7/JV8/JV9/JV10 jumper needs to be set (ground). If it's 32Mbit, the JV11/JV12/JV13/JV14 needs to be set (A20). This is because 32Mbit chips have their /BYTE pin replaced by A20.

=Other=

The LS08 is used to AND the /PORTOEU and /PORTOEL signals to get /PORTOE.

* 4x 1/2/4MiB V ROMs
* 1/2MiB P1 ROM
* 1/2/4MiB P2 ROM
* 2x 512KiB EP1/EP2 ROM
* {{Chipname|PCM}} chip
* LS139, LS08, LS74A

[[Category:Cartridge boards]]

CHA-EPG

2026-01-10T15:10:53Z

Defalt: Included MVS pic

Revision of [[CHA-EP]].

Now utilizes [[NEO-ZMC2]] instead of [[PRO-CT0]], and [[NEO-273]] instead of off-the-shelf logic chips.

==MVS version==
[[File:NEO-MVS CHA-EPG.jpg|thumb|400px]]
<div style="clear: both"></div>
==Home console version==
[[File:NEO-AEG CHA-EPG.PNG|thumb|400px]]

User talk:Cyberwillis

2026-01-10T15:07:47Z

Defalt: /* Hi ! :) */ new section

'''Welcome to ''NeoGeo Development Wiki''!'''
We hope you will contribute much and well.
You will probably want to read the [[Help:Contents|help pages]].
Again, welcome and have fun! [[User:ElBarto|ElBarto]] 16:36, 1 December 2011 (CET)

== Hi ! :) ==

Hi Cyberwillis, thanks for your contributions on cartridge boards. I noticed you uploaded a picture of NEO-MVS CHA-EPG from the Last Resort proto. I only have the pics with the Photobucket watermark, could you upload / send me (defalt.dsc at gmail.com) the pic of the PROG board please ? Thanks :D

Category:Cartridge boards

2026-01-08T06:10:51Z

Defalt: Added missing boards, TODO? : separate MVS and console?

CHAEP8M

2026-01-08T06:07:03Z

Defalt: add category

Later revision of [[CHA-EP]] that uses [[NEO-273]] and [[NEO-ZMC]].

==MVS version==
[[File:NEO-MVS CHAEP8M.jpg|thumb|400px]]
Picture from the 2011 [https://emuconsoleexploitnews.blogspot.com/2011/04/king-of-monsters-2-prototype-on-ebay.html eBay sale] of [[King of the Monsters 2 - The Next Thing]].
<div style="clear: both"></div>
==Home console version==
[[File:NEO-AEG CHAEP8M.jpg|thumb|400px]]

[[Category:Cartridge boards]]

CHA-EP

2026-01-08T06:06:40Z

Defalt: add category

CHA board that allows the use of 8-bit C ROMs. Only used in prototypes (all production games have 16 bit C ROMs).

==MVS version==
[[File:NEO-MVS CHA-EP.jpg|thumb|left|400px]]
<div style="clear: both"></div>
==Home console version==
[[File:NEO-AEG CHA-EP.jpg|thumb|left|400px]]

[[Category:Cartridge boards]]

PROG-EP

2026-01-08T06:06:12Z

Defalt: added missing link

J1/J2: ROMWAIT (B25) on cart edge.

==MVS version==
[[File:NEO-MVS PROG-EP.jpg|thumb|Picture from [[http://www.mvs-scans.com MVS-Scans]]|400px]]
Initially created to be used only for prototypes, like [[CHA-EP]] but used in production games for reasons?
<div style="clear: both"></div>
==Home console version==
[[File:NEO-AEG PROG-EP.jpg|thumb|400px]]
Only used in prototype cartridges.

[[Category:Cartridge boards]]

PROG-EP

2026-01-08T06:05:23Z

Defalt: Cleared up usage status and added HC version

J1/J2: ROMWAIT (B25) on cart edge.

==MVS version==
[[File:NEO-MVS PROG-EP.jpg|thumb|Picture from [[http://www.mvs-scans.com MVS-Scans]]|400px]]
Initially created to be used only for prototypes, like CHA-EP but used in production games for reasons?
<div style="clear: both"></div>
==Home console version==
[[File:NEO-AEG PROG-EP.jpg|thumb|400px]]
Only used in prototype cartridges.

[[Category:Cartridge boards]]

File:NEO-AEG PROG-EP.jpg

2026-01-08T06:04:25Z

Defalt:

== Licensing ==
{{cc-by-nc-nd-3.0}}

PROGEP8M

2026-01-08T05:54:09Z

Defalt: add category

Later revision of [[PROG-EP]] that uses [[PCM]]. Contrary to this predecessor it seems to have only been used in [[Cartridges#Development cartridges|prototypes]].

==MVS version==
[[File:NEO-MVS PROGEP8M.jpg|thumb|400px]]
Picture from the 2011 [https://emuconsoleexploitnews.blogspot.com/2011/04/king-of-monsters-2-prototype-on-ebay.html eBay sale] of [[King of the Monsters 2 - The Next Thing]].
<div style="clear: both"></div>
==Home console version==
[[File:NEO-AEG PROGEP8M.jpg|thumb|400px]]

[[Category:Cartridge boards]]

File:NEO-MVS PROG-EP.jpg

2026-01-08T05:52:14Z

Defalt: From mvs-scans.com

== Summary ==
From mvs-scans.com
== Licensing ==
{{Non-free Some website}}

PROGEP8M

2026-01-08T05:38:26Z

Defalt: Added home cart version

CHAEP8M

2026-01-08T05:37:13Z

Defalt: formatting

CHAEP8M

2026-01-08T05:36:29Z

Defalt: Added home cart version

Later revision of [[CHA-EP]] that uses [[NEO-273]] and [[NEO-ZMC]].

==MVS version==
[[File:NEO-MVS CHAEP8M.jpg|thumb|thumb|left|400px]]
Picture from the 2011 [https://emuconsoleexploitnews.blogspot.com/2011/04/king-of-monsters-2-prototype-on-ebay.html eBay sale] of [[King of the Monsters 2 - The Next Thing]].
<div style="clear: both"></div>
==Home console version==
[[File:NEO-AEG CHAEP8M.jpg|thumb|left|400px]]

File:NEO-AEG CHAEP8M.jpg

2026-01-08T05:32:28Z

Defalt:

== Licensing ==
{{Non-free Some website}}

File:NEO-AEG PROGEP8M.jpg

2026-01-08T05:32:14Z

Defalt:

== Licensing ==
{{Non-free Some website}}

PROGSMA

2026-01-07T18:30:17Z

Defalt: formatting cleanup

[[File:PROGSMA.png|thumb|400px]]
Development-only (prototype) board. Uses memory card for V1 ROM. Uses [[NEO-SMA]].

Sockets

2026-01-07T18:28:09Z

Defalt: Created page with low profile socket info for devcarts

File:3M 400 series.pdf

2026-01-07T18:24:06Z

Defalt: (c) 3M Corporation

== Summary ==
(c) 3M Corporation
== Licensing ==
{{Non-free Some website}}

File:ICC12series.pdf

2026-01-07T18:22:16Z

Defalt: (c) KEL Corporation

== Summary ==
(c) KEL Corporation
== Licensing ==
{{Non-free Some website}}

Cartridges

2026-01-07T18:19:39Z

Defalt: Started cleanup of dev cart section

[[AES cartridge]]s and [[MVS cartridge]]s are made of two, dual layer boards. Chips facing upwards, the top [[PROG board]] holds the {{Chipname|P ROM}}s (68k code) and {{Chipname|V ROM}}s (sound samples), while the bottom [[CHA board]] holds the {{Chipname|C ROM}}s (sprite tiles), {{Chipname|S ROM}}s (fix tiles) and {{Chipname|M1 ROM}} ROM (z80 code).

Various cartridge boards were designed over the years to accomodate different ROM and protection chips. See [[cartridge specifications]] and [[:Category:Cartridge boards]] for a complete list of them.

==Development cartridges==

[[File:Devsoftpcb.png|thumb|Development software PCB|400px]]
Big development cartridges are referred to by SNK as "Development software PCB". They exist in two forms : EPROM type, and flash card type. Did they later on evolve to only one mixed form ?

Examples include early X3007 (1990~1992) and X3002 (~1993+).

<div style="clear: both"></div>
[[File:Samplek7brd.png|thumb|Sample cassette board|400px]]

Regular development cartridges are referred to by SNK as "Sample cassette boards".

In EPROM type, a few exceptions exist like [[CHA-EP]], [[PROGEP8M]] or [[CHAEP8M]], but they most often used standard boards like [[PROGBK1]] and [[CHA256]] populated with low-profile [[sockets|IC sockets]] so the cartridge shell could still close. It is the most common variety of development cartridge because it generally is used only at the later stages of production and as master ROM.

Of the flash card type, only one boardset is known, [[PROGMC2]] and [[CHAMC2]]. [[PROGSMA]] does use a flash card as V ROM but this specific board was most likely intended for development of the [[NEO-SMA]] protection chip itself, not for game development.

<div style="clear: both"></div>
Todo : cleanup under

Prototypes cartridges with green labels are the more common Japanese versions.

Mahjong Minasan no Okagesamadesu prototype (picture by NeoGeoCollector):

[[File:Greenminasanno.jpg|640px]]

Prototype cartridges with blue labels are the Export versions. These are extremely rare and only one cart with this label is known.

Viewpoint prototype (picture by NeoTurfMasta):

[[File:Vp1.jpg|640px]]

These are the sample carts made when the game is somewhat complete. But there are also development carts developers used to test each of their builds, with easily removable linear flash cards.

There are some boards with a standard MVS form factor. Maybe an AES variant exists ?

Standard-sized flash cart (picture by www.neogeofreak.com):

[[File:Ngfproto.jpg]]

And there are also some way bigger flash carts! Dragon's Heaven aka. DarkSeed was found on this kind of development board.

X3002 dev board (picture by NeoTurfMasta):

[[File:X3002.jpg|640px]]

There are also EPROM carts in the same format, like this other X3002 but with eproms (picture source unknown):

[[File:X3002-eprom-ver.jpg|640px]]

Older X0007 with full height connector, mfg. same as early boards (picture source unknown):

[[File:X3007.jpg|640px]]

Speaking of EPROM carts, there are even more strange cartridges, PROG8AM and CHA8AM (picture source unknown):

[[File:8AM.jpg]]

Another 8AM dev board. Does this one hosts Sun Shine / Block Paradise?. It is one of the very first dev boards made. (picture by Billy Pitt):

[[File:13pregunta.jpg]]

[[Category:Cartridge systems]]
[[Category:Chips]]

File:Samplek7brd.png

2026-01-07T18:04:02Z

Defalt: From dev manual

== Summary ==
From dev manual

File:Devsoftpcb.png

2026-01-07T18:01:26Z

Defalt: From dev manual

== Summary ==
From dev manual

PROG-COM

2026-01-07T07:46:57Z

Defalt: Created page

[[File:NEO-MVS PROG-COM.jpg|thumb|400px]]
First ever multiplayer link-capable board. Only used in [[Cartridges#Development cartridges|prototypes]].

Uses a HD63P01M1 MCU that takes an EPROM, instead of the mask-programmed [[HD6301V1]] used on production multiplayer boards.

File:NEO-MVS PROG-COM.jpg

2026-01-07T07:43:28Z

Defalt:

== Licensing ==
{{cc-by-nc-nd-3.0}}

PROG board

2026-01-07T07:40:09Z

Defalt: formatting

__NOTOC__

Cartridge PCB which holds the [[P ROM|P]] (68k code) and [[V ROM|V]] (sound) ROMs.

Most of the list is from [[https://github.com/mamedev/mame/blob/master/src/mame/drivers/neodriv.hxx MAME's source]].

=MVS=

{| class="wikitable"
!Name!!Test!!Max P ROM!!Max V ROM
|-
|[[NPS-PRG1]]||[[UPD4990], BR4090, [[PCM]]
|-
|[[PROG-8MB]]
|-
|[[PROG-EP]]
|-
|[[PROGEP8M]] (Prototype)||[[PCM]]
|-
|[[PROG-COM]]||[[HD6301V1]]
|-
|[[PROG-G2]]||[[PCM]],[[SNK-9201]]||512*2(+/?)1024
|-
|[[PROG-HERO]]||[[HD6301V1]]
|-
|[[PROG-NAM]]
|-
|[[PROG16]]
|-
|[[PROG4096]]||[[PCM]]||2*512+1024+2048||3*2048
|-
|[[PROG4096B]]
|-
|[[PROG42G]]
|-
|[[PROG42G-1]]||[[PCM]]||128+1024||4*1024
|-
|[[PROG42G-COM]]||[[HD6301V1]]
|-
|[[PROG8M42]]
|-
|[[PROGBK1]]||[[PCM]]||?||4*32Mbit
|-
|[[PROGBK2]]
|-
|[[PROGBK2R]]
|-
|[[PROGBK2S]]
|-
|[[PROGBK3R]]
|-
|[[PROGBK3S]]
|-
|[[PROGEOP]]
|-
|[[PROGGSC]]
|-
|[[PROGLBA]]
|-
|[[PROGTOP]]
|-
|[[PROGV]]
|-
|[[PROGMC2]]||[[PCM]]||8192||8192
|}

==NPS-PRG1==
[[Neo Print]] cartridge. Has an [[UPD4990]] and a BR4090 serial EEPROM.

==PROGBK1==

==PROGBK2==

==PROGBK2R==
==PROGBK2S==
==PROGBK3R==
==PROGBK3S==
==PROGEOP==
==PROGGSC==
==PROGLBA==
==PROGSM==
==PROGSS3==
==PROGSF1==
==PROGTOP==
==PROGV (Brezzasoft)==
==PROGMC2 (Prototype Board)==
[[http://www.neogeoprotos.com/games/topsecret2.htm Billy Pit's Neo-Geo Proto Page]] or [[http://www.assemblergames.com/forums/showthread.php?t=23106&page=11]]

[[File:Progmc2.jpg|thumb|300px|Image courtesy of http://www.neogeoprotos.com]]

[[Category:Chips]]
[[Category:Cartridge systems]]
[[Category:Cartridge boards]]

PROG board

2026-01-07T07:39:38Z

Defalt: Added PROG-COM and link to HD6301V1 to PROG-HERO and PROG42G-COM

__NOTOC__

Cartridge PCB which holds the [[P ROM|P]] (68k code) and [[V ROM|V]] (sound) ROMs.

Most of the list is from [[https://github.com/mamedev/mame/blob/master/src/mame/drivers/neodriv.hxx MAME's source]].

=MVS=

{| class="wikitable"
!Name!!Test!!Max P ROM!!Max V ROM
|-
|[[NPS-PRG1]]||[[UPD4990], BR4090, [[PCM]]
|-
|[[PROG-8MB]]
|-
|[[PROG-EP]]
|-
|[[PROGEP8M]] (Prototype)||[[PCM]]
|-
|[[PROG-COM]]|[[HD6301V1]]
|-
|[[PROG-G2]]||[[PCM]],[[SNK-9201]]||512*2(+/?)1024
|-
|[[PROG-HERO]]|[[HD6301V1]]
|-
|[[PROG-NAM]]
|-
|[[PROG16]]
|-
|[[PROG4096]]||[[PCM]]||2*512+1024+2048||3*2048
|-
|[[PROG4096B]]
|-
|[[PROG42G]]
|-
|[[PROG42G-1]]||[[PCM]]||128+1024||4*1024
|-
|[[PROG42G-COM]]|[[HD6301V1]]
|-
|[[PROG8M42]]
|-
|[[PROGBK1]]||[[PCM]]||?||4*32Mbit
|-
|[[PROGBK2]]
|-
|[[PROGBK2R]]
|-
|[[PROGBK2S]]
|-
|[[PROGBK3R]]
|-
|[[PROGBK3S]]
|-
|[[PROGEOP]]
|-
|[[PROGGSC]]
|-
|[[PROGLBA]]
|-
|[[PROGTOP]]
|-
|[[PROGV]]
|-
|[[PROGMC2]]||[[PCM]]||8192||8192
|}

==NPS-PRG1==
[[Neo Print]] cartridge. Has an [[UPD4990]] and a BR4090 serial EEPROM.

==PROGBK1==

==PROGBK2==

==PROGBK2R==
==PROGBK2S==
==PROGBK3R==
==PROGBK3S==
==PROGEOP==
==PROGGSC==
==PROGLBA==
==PROGSM==
==PROGSS3==
==PROGSF1==
==PROGTOP==
==PROGV (Brezzasoft)==
==PROGMC2 (Prototype Board)==
[[http://www.neogeoprotos.com/games/topsecret2.htm Billy Pit's Neo-Geo Proto Page]] or [[http://www.assemblergames.com/forums/showthread.php?t=23106&page=11]]

[[File:Progmc2.jpg|thumb|300px|Image courtesy of http://www.neogeoprotos.com]]

[[Category:Chips]]
[[Category:Cartridge systems]]
[[Category:Cartridge boards]]

CHA board

2026-01-07T07:08:59Z

Defalt: Linked CHAEP8M page + edited source to cover wiki-specific additions (dev boards)

__NOTOC__

Cartridge PCB which holds the [[C ROM|C]] (sprite graphics), [[M1 ROM|M]] (Z80 code) and [[S ROM|S]] (fix graphics) ROMs.

Most of the list is from [[https://github.com/mamedev/mame/blob/master/src/mame/drivers/neodriv.hxx MAME's source]].

=MVS=

{| class="wikitable"
!Name
!Chips
!Max C ROM
!Max S ROM
!Max M ROM
|-
|[[CM2]] (Prototype)
|-
|[[CHA-EP]] (Prototype)
|-
|[[CHA-32]]
|-
|[[CHA-8M]]
|-
|[[CHAEP8M]] (Prototype)||[[NEO-ZMC]],[[NEO-273]]||8*1024||128||128
|-
|[[CHA256]]||[[NEO-ZMC]],[[NEO-273]]||8*4096||?||?
|-
|[[CHA256B]]||[[NEO-ZMC]],[[NEO-273]]||8*4096||?||?
|-
|[[CHA42G-1]]||[[NEO-ZMC]],[[NEO-273]]||4*1024||128||128
|-
|CHA42G-2
|-
|CHA42G-3?
|-
|CHA42G-3B
|-
|[[CHA512Y]]||[[NEO-ZMC]],[[NEO-273]]||8*8192||128||128
|-
|CHA64-C
|[[NEO-ZMC]]
|-
|[[CHAFIO]]||[[NEO-CMC]]42, [[NEO-CMC]]50
|-
|CHAMC2||[[NEO-ZMC]],[[NEO-273]]||2*16384||512||512
|-
|PSTM-ROMC||-||-||-||-
|}

=Home Console=

{| class="wikitable"
!Name
!Chips
!Max C ROM
!Max S ROM
!Max M ROM
|-
|[[CHA-EP]] (Prototype)||-||-||-||-
|-
|[[CHA-32]]||-||-||-||-
|-
|[[CHA-8M]]||-||-||-||-
|-
|[[CHA42G]]||-||-||-||-
|-
|[[CHA42G-1]]||-||-||-||-
|-
|[[CHA42G-2]]||-||-||-||-
|-
|[[CHA42G-2C]]||-||-||-||-
|-
|[[CHA-EPG]] (Prototype)||-||-||-||-
|-
|[[CHA42G-3]]||-||-||-||-
|-
|[[CHA42G-4]]||-||-||-||-
|-
|[[CHA256]]||-||-||-||-
|-
|[[CHA256 B]]||-||-||-||-
|-
|[[CHA256🄱]]||-||-||-||-
|-
|[[CHA256BY]]||-||-||-||-
|-
|[[CHA256RY]]||-||-||-||-
|-
|[[CHA512Y]]||-||-||-||-
|-
|[[CHAFIO]]||-||-||-||-
|-
|}

==CHA-32==
[[File:neo-mvs-cha32.png|400px]]

==CHAFIO REV1.0 (KOF-2001)==

==CHAMC2(Prototype Board)==
[[http://www.neogeoprotos.com/games/topsecret2.htm Billy Pit's Neo-Geo Proto Page]] or [[http://www.assemblergames.com/forums/showthread.php?t=23106&page=11]]

==PSTM-ROMC==

The only cart board which hasn't a [[S ROM]].

[[Category:Chips]]
[[Category:Cartridge systems]]
[[Category:Cartridge boards]]

PROG board

2026-01-07T07:07:53Z

Defalt: Edited source to cover wiki-specific additions (dev boards)

__NOTOC__

Cartridge PCB which holds the [[P ROM|P]] (68k code) and [[V ROM|V]] (sound) ROMs.

Most of the list is from [[https://github.com/mamedev/mame/blob/master/src/mame/drivers/neodriv.hxx MAME's source]].

=MVS=

{| class="wikitable"
!Name!!Test!!Max P ROM!!Max V ROM
|-
|[[NPS-PRG1]]||[[UPD4990], BR4090, [[PCM]]
|-
|[[PROG-8MB]]
|-
|[[PROG-EP]]
|-
|[[PROGEP8M]] (Prototype)||[[PCM]]
|-
|[[PROG-G2]]||[[PCM]],[[SNK-9201]]||512*2(+/?)1024
|-
|[[PROG-HERO]]
|-
|[[PROG-NAM]]
|-
|[[PROG16]]
|-
|[[PROG4096]]||[[PCM]]||2*512+1024+2048||3*2048
|-
|[[PROG4096B]]
|-
|[[PROG42G]]
|-
|[[PROG42G-1]]||[[PCM]]||128+1024||4*1024
|-
|[[PROG42G-COM]]
|-
|[[PROG8M42]]
|-
|[[PROGBK1]]||[[PCM]]||?||4*32Mbit
|-
|[[PROGBK2]]
|-
|[[PROGBK2R]]
|-
|[[PROGBK2S]]
|-
|[[PROGBK3R]]
|-
|[[PROGBK3S]]
|-
|[[PROGEOP]]
|-
|[[PROGGSC]]
|-
|[[PROGLBA]]
|-
|[[PROGTOP]]
|-
|[[PROGV]]
|-
|[[PROGMC2]]||[[PCM]]||8192||8192
|}

==NPS-PRG1==
[[Neo Print]] cartridge. Has an [[UPD4990]] and a BR4090 serial EEPROM.

==PROGBK1==

==PROGBK2==

==PROGBK2R==
==PROGBK2S==
==PROGBK3R==
==PROGBK3S==
==PROGEOP==
==PROGGSC==
==PROGLBA==
==PROGSM==
==PROGSS3==
==PROGSF1==
==PROGTOP==
==PROGV (Brezzasoft)==
==PROGMC2 (Prototype Board)==
[[http://www.neogeoprotos.com/games/topsecret2.htm Billy Pit's Neo-Geo Proto Page]] or [[http://www.assemblergames.com/forums/showthread.php?t=23106&page=11]]

[[File:Progmc2.jpg|thumb|300px|Image courtesy of http://www.neogeoprotos.com]]

[[Category:Chips]]
[[Category:Cartridge systems]]
[[Category:Cartridge boards]]

CHAEP8M

2026-01-07T07:06:52Z

Defalt: Created page

[[File:NEO-MVS CHAEP8M.jpg|thumb|400px]]
Later revision of [[CHA-EP]] that uses [[NEO-273]] and [[NEO-ZMC]].

Picture from the 2011 [https://emuconsoleexploitnews.blogspot.com/2011/04/king-of-monsters-2-prototype-on-ebay.html eBay sale] of [[King of the Monsters 2 - The Next Thing]].

File:NEO-MVS CHAEP8M.jpg

2026-01-07T07:05:03Z

Defalt:

== Licensing ==
{{Non-free Some website}}

PROGEP8M

2026-01-07T07:04:31Z

Defalt: corrected formatting

[[File:NEO-MVS PROGEP8M.jpg|thumb|400px]]
Later revision of [[PROG-EP]] that uses [[PCM]]. Contrary to this predecessor it seems to have only been used in [[Cartridges#Development cartridges|prototypes]]. Picture from the 2011 [https://emuconsoleexploitnews.blogspot.com/2011/04/king-of-monsters-2-prototype-on-ebay.html eBay sale] of [[King of the Monsters 2 - The Next Thing]].

PROGEP8M

2026-01-07T07:04:13Z

Defalt: Created page

[[File:NEO-MVS PROGEP8M.jpg|thumb|400px]]

Later revision of [[PROG-EP]] that uses [[PCM]]. Contrary to this predecessor it seems to have only been used in [[Cartridges#Development cartridges|prototypes]]. Picture from the 2011 [https://emuconsoleexploitnews.blogspot.com/2011/04/king-of-monsters-2-prototype-on-ebay.html eBay sale] of [[King of the Monsters 2 - The Next Thing]].

File:NEO-MVS PROGEP8M.jpg

2026-01-07T06:54:43Z

Defalt:

== Licensing ==
{{Non-free Some website}}

CHA-EP

2026-01-07T05:54:51Z

Defalt: Updated formatting

Slot

2026-01-05T11:09:02Z

Defalt: Added datasheet

A "slot" usually refers to the cartridge connector of cartridge systems, and is sometimes used to name 1-slot [[MVS_board_types|MVS boards]].

Multi-slot boards use discrete or custom-made multiplexing chips such as {{Chipname|NEO-244}}, {{Chipname|NEO-253}} and {{Chipname|NEO-G0}} to let the [[system ROM]] switch games.

[[Category:Cartridge systems]]

Originally made by KEL, 4820 series (datasheet : https://www.kel.jp/files/topics/392_ext_19_en_0.pdf)

Slot

2025-12-31T15:37:12Z

Defalt: Added probable og mfg

A "slot" usually refers to the cartridge connector of cartridge systems, and is sometimes used to name 1-slot [[MVS_board_types|MVS boards]].

Multi-slot boards use discrete or custom-made multiplexing chips such as {{Chipname|NEO-244}}, {{Chipname|NEO-253}} and {{Chipname|NEO-G0}} to let the [[system ROM]] switch games.

[[Category:Cartridge systems]]

Originally made by KEL ? https://www.kel.jp/files/topics/392_ext_19_0.pdf

Bootleg

2025-12-21T08:42:34Z

Defalt: Added one use by SNK of MX OTP ROM on Fighters Swords

<pre>
From the carrying of bottles of smuggled spirit in the legs of boots.

en.wiktionary.org
</pre>

A "bootleg" commonly refers to a counterfeit game cartridge, [[Copy protection|CD]] or [[Bootleg_MVS_boards|system]].

NeoGeo bootlegs are quite common, as SNK took years to implement [[NEO-CMC|security measures]] to avoid (or at least delay) piracy. Most are believed to originate from China and South Korea.

Over the years, [[multicarts]] gained popularity over single game bootlegs as memory chip costs decreased and decrypted ROMsets became available, making design easier and sales even more profitable.

Aside from the collection and authenticity aspect, bootlegs are known to be plagued with functional and electrical problems due to low quality manufacturing and/or poor design.

All pictures are crops from [[http://www.mvs-scans.com/index.php/Main_Page MVS-Scans]].

=Recognizing bootleg cartridges=

Efficiently recognizing bootlegs can be important for collectors, sellers and especially buyers. Some online sellers provide PCB pictures of their MVS games, but many of them only show the label or just an overall view of the cartridge (especially those for the home system, as they're more difficult to open).

Todo: how to open. MVS: easy, 4 screws. AES: snapped together.

==Misleading clues==

* EPROMs (memory chips with glass windows) were sometimes used by SNK for [[P ROM]]s.
* Flux residue around logic chips, might just be a repair job.
* A few late cartridges had their [[P ROM]]s replaced by a {{PCB|NGPC flash board|flash daughterboard}}. This is an original emergency solution/fix from SNK.
* Some other late cartridges had a small board ({{PCB|NEO-HYCS}}) wired to [[V ROM]]s and glued on top of them. This is also an original fix.

==No gold plating==

Original cartridge PCBs all have gold-plated fingers (slot contacts) for durability.

To reduce costs, some bootleg PCBs don't have gold plating (looks dark silver).

This can be checked without opening the cartridge.

==Unusual chip brands==

SNK had their favorite brands. If found on a cartridge PCB, these chip logos can be bad news:

[[File:Bootbrands.png|center]]

From left to right, top to bottom:
* AMD: Memories, never seen on SNK boards
* Atmel: Memories and PLDs, often used in bootlegs
* Cypress: PLDs, often used in bootlegs
* Goldstar: Often found on bootlegs, sometimes on original boards
* Hyundai: Memories, never seen on SNK boards
* Macronix: Memories, never seen on SNK boards except for M1 (MX27C1001PC12) on Fighters Swords (Korean Samurai Shodown III)
* Microchip: Memories, never seen on SNK boards
* Motorola: Todo, remove
* Samsung: Never seen on SNK boards
* SST: Memories, never seen on SNK boards
* UMC: Rarely seen on SNK boards except for surface-mount memories
* Winbond: Memories, never seen on SNK boards
* Xilinx: Never seen on SNK boards, only Altera

Also Lattice (PLDs) and Intel (flash memories), never seen on SNK boards.

==EPROMs or flash memory==
[[File:boot_eprom.jpg|thumb|EPROM chip.]]

EPROMs, memory chips with erasing windows, are often used in bootlegs instead of plain plastic mask ROMs.

Note that some original cartridges use EPROMs as [[P ROM]] revisions.

<br clear=all>

==Bad NGH marking==
[[File:boot_rom.jpg|thumb|NGH #389 doesn't even exist. Also bright white "stamp" marking.]]

Memory chips only marked with a 3-digit number not matching the game's [[NGH number]] are certainly fake.

<br clear=all>

==Sanded or rebranded chips==
[[File:boot_pcm.jpg|thumb|{{Chipname|PCM}} clone with a (probably) meaningless marking.]]

Some chips can be sanded (no markings, visible scratches...) to prevent other bootleggers from copying the design. Clone chips are often rebranded for the same reason.

<br clear=all>

==SMT or DIP adapters==
[[File:boot_adapter.jpg|thumb|Two 8-bit Intel flash chips used in place of a 16-bit mask ROM.]]

SMT and DIP adapters are small PCBs commonly found in bootlegs and [[converts]]. They allow the use of cheaper chips in place of EPROMs without having to change the whole board's layout or to use chips not compatible with the board, sometimes with the help of logic ICs.

They were often assembled by hand and therefore covered in flux barf (see below).

<gallery>
File:boot_adapter.jpg|Two 8-bit Intel flash chips used in place of a 16-bit mask C-ROM.
File:Bootleg-smt-adapter2.jpg|Two 8-bit MX flash chips used in place of a 16-bit mask C-ROM.
File:Bootleg-smt-adapter.jpg|One 8-bit Intel flash chips used in place of a 8-bit mask V-ROM.
File:Bootleg-dip-adapter.jpg|Two 27c040 with logic.
File:Bootleg-dip-adapter2.jpg|Pinout adapter.
File:Bootleg-custom-pcb.jpg|DIP adapter upside-down (on top right).
</gallery>

<br clear=all>

==Uncommon board shapes, colors or layouts==
[[File:boot_shape.jpg|thumb]]

As some PCB manufacturers set their price depending on the board's area instead of the smallest containing rectangle, some bootleg PCBs were made in unusual shapes to reduce costs.

All known SNK cartridge PCBs are rectangular. However it doesn't mean all rectangular boards are original.

Many bootlegs use yellow soldermask (protection lacquer). All known SNK boards use green.

<gallery>
File:boot_shape.jpg|Custom shaped board
File:Bootleg-custom-pcb.jpg|Custom PCB combo: darker color, custom chip marking, DIP adapter
File:Bootleg-custom-pcb-verso.jpg|Same custom PCB, verso
File:boot_yellowmask.jpg|The soldermask gives the board's final color.
</gallery>

<br clear=all>

==Questionable markings==
[[File:boot_snkmark.jpg|thumb|Are they even trying ?]]

Meaningless "serial numbers", serif fonts, Engrish, bad alignment, bad logo proportions, and wrong line thickness are all signs of fake PCBs.

Sometimes, nothing is better than something (even if no silkscreen at all also means bootleg).

<br clear=all>

==Paper labels==
[[File:boot_labels.jpg|thumb|COB adapter + checksum label combo !]]

Paper labels are very rare in original cartridges, most manual QC markings were done with colored grease pencils.

Prototypes often used paper labels too.

[[File:Proto labels.png|thumb|Paper labels found in prototypes.]]

<br clear=all>

==Flux residue==
[[File:boot_flux.jpg|thumb|Extreme case of flux barf. Board could still be functional.]]

[[https://en.wikipedia.org/wiki/Flux_(metallurgy) Flux]] used for manual soldering, when not cleaned off, can look like dried barf after a while.

Aside from eventual traces of accidental beer spills, [[corrosion|rat piss]] and dust, original boards should be clean.

<br clear=all>

==Lifted pins==
[[File:Bootleg-pin-lift.jpg|thumb|27c010 used as a 27C1000.]]

Commonly found with eprom, lifting pins allows to usage of bigger but cheaper eprom (eg: 27c160 as 27c800) or not compatible eprom (eg: 27c1001 as 27c1000).

<br clear=all>

==Jump wires==
[[File:Bootleg-jump-pcm.jpg|thumb|Jump wire from cart connector to PCM.]]

Some official SNK repairs use jump wires but most of the time having custom wiring is a signature of a bootleg.

This was used to replace 0 ohm resistor (jumper), connect missing address lines of earlier boards in order to get more ROM space or simply to work with non compatible eprom.

<br clear=all>

[[Category:Cartridge systems]]

CHA-EPG

2025-12-11T18:17:29Z

Defalt: fix img link

Revision of [[CHA-EP]].

Now utilizes [[NEO-ZMC2]] instead of [[PRO-CT0]], and [[NEO-273]] instead of off-the-shelf logic chips.

[[File:NEO-AEG CHA-EPG.PNG|thumb|256px]]

CHA-EPG

2025-12-11T18:17:07Z

Defalt: Added pic

Revision of [[CHA-EP]].

Now utilizes [[NEO-ZMC2]] instead of [[PRO-CT0]], and [[NEO-273]] instead of off-the-shelf logic chips.

[[File:NEO-AEG CHA-EPG.jpg|thumb|256px]]

File:NEO-AEG CHA-EPG.PNG

2025-12-11T18:16:54Z

Defalt: COPYRIGHT HOLDER : NeoGeoFreak / NGF-USA

== Summary ==
COPYRIGHT HOLDER : NeoGeoFreak / NGF-USA
== Licensing ==
{{Non-free NeoGeoDev Wiki only}}

PCM

2025-12-11T18:13:45Z

Defalt: Changed 1st use from 1992 ? to 1990 (source : https://www.mvs-scans.com/index.php/File:Eight_man_set1_b1_front.jpg )

{{ChipInfo
|picture=crt_pcm.jpg
|pkg=QFP80R
|manu=fujitsu
|date=1990
|gates=
|used_on=[[Cartridges]]
}}

PCM (not "'''NEO'''-PCM" probably because it was used in some SNK claw cranes) is a {{Chipname|V ROM}} banking and demultiplexing chip, found in AES and MVS [[cartridges]], and on [[ROM-Only boards|ROM-only]] arcade boards.

Early cartridges had separate [[YM2610|ADPCM]]-A and ADPCM-B sound ROMs. Since one was often emptier than the other, SNK devised a way to mix both types in the same ROM chip to save space and reduce costs.

{{Chipname|NEO-PCM2}} can also be found in late cartridges, and with {{Chipname|NEO-YSA2}}.

On some [[:Category:cartridge boards|Cartridge boards]], VA20~VA22 are used to select which of the 4 possible V ROMs to use (decoded by a LS139).

Uses several latches for address and data, as well as a counter clocked by {{Sig|68KCLKB|68KCLKB}} for synchronisation.

=Internal logic=

The trick takes advantage of the asynchronous and predictable access to the ADPCM-A and APDCM-B data by the {{Chipname|YM2610}}. See [[YM2610 bus timing]].

[[https://github.com/neogeodev/SNKVerilog/tree/master/PCM Verilog definition]].

=Pinout=

{{Pinout|PCM|640}}

*INVIN, INVOUT: Simple inverter

*SDPOE, SDROE, SDPMPX, SDRMPX: from the YM2610

*SDRAD0~SDRAD7: ADPCM-A multiplexed bus part
*SDPAD0~SDPAD7: ADPCM-B multiplexed bus part

*SDRA8, SDRA9, SDRA20~SDRA23: ADPCM-A address bus
*SDPA8~SDPA11: ADPCM-B address bus

*V D0~V D7: V ROM(s) data bus
*V A-1~V A22: V ROM(s) address bus
** When the MODE pin is low, V A19~V A22 become 4 active-low decoded outputs (based on value from the internal V A19 and V A20).

[[Category:Chips]]

Development tools

2025-10-06T14:00:31Z

Defalt: Added Z80DASM

__NOTOC__
==68000==
{|class="wikitable"
!colspan=6 style="background-color:#ccc"|Assemblers
|-
!Name !! Author(s) !! Description !! Platform(s) !! Notes !! Download
|-
| [http://john.ccac.rwth-aachen.de:8000/as/ AS] || Alfred Arnold, et al || Multi-target assembler || (multiple) || Provided as source code and binaries (Windows, DOS) ||  
|-
| [http://sun.hasenbraten.de/vasm/ vasm] || Volker Barthelmann, et al || Multi-target assembler || (multiple) || Provided as source code<br/>"official" binaries are for older versions ||  
|-
| JAS || Charles Doty, Paul Lee, Michael Hope || Modified version of AS || Windows || (base AS version unknown; binary is circa 1999/12/30) || [[File:JAS.zip]]
|-
| Maccer || Michael Hope || Pre-processor for AS-series assemblers || (multiple) || Provided as source code and Windows binary ||  
|-
| [http://gendev.spritesmind.net/page-macX.html MaccerX] || Kaneda || Updated version of Maccer || (multiple) || Provided as source code and Windows binary; added support for XGCC (gcc) and comments ||  
|-
| SNASM68K || S.N. Systems || 680x0 assembler || Windows ||   || [http://segaretro.org/SNASM68K SNASM68K at Sega Retro]<br/><small>(Modified version by Nemesis)</small>
|-
!colspan=6 style="background-color:#ccc"|Compilers
|-
!Name !! Author(s) !! Description !! Platform(s) !! Notes !! Download
|-
| NeoDev kit || Fabrice Martinez, Jeff Kurtz, et al || GCC compiler and library || (multiple) ||   || [[File:NeoDev001.zip]]
|-
!colspan=6 style="background-color:#ccc"|Disassemblers
|-
!Name !! Author(s) !! Description !! Platform(s) !! Notes !! Download
|-
| IRA || Tim Ruehsen, ported by Antirad || Intelligent ReAssembler for M680x0 || (multiple) || PC port of an Amiga app; provided as source ("PC") and binary (Windows) || [[File:Ira.zip]]
|-
| unidasm || MAMEdev || Universal Disassembler || (multiple) || Included with the Windows MAME distribution; can be built from source ||  
|}

==Z80==
{|class="wikitable"
!colspan=6 style="background-color:#ccc"|Assemblers
|-
!Name !! Author(s) !! Description !! Platform(s) !! Notes !! Download
|-
| [http://john.ccac.rwth-aachen.de:8000/as/ AS] || Alfred Arnold, et al || Multi-target assembler || (multiple) || Provided as source code and binaries (Windows, DOS) ||  
|-
| [http://sun.hasenbraten.de/vasm/ vasm] || Volker Barthelmann, et al || Multi-target assembler || (multiple) || Provided as source code<br/>"official" binaries are for older versions ||  
|-
| [https://github.com/vhelin/wla-dx WLA DX] || Ville Helin, et al || Multi-target assembler || (multiple) || Provided as source code || [http://www.niksula.cs.hut.fi/~tursas/wla/wladx_binaries_20040822.zip WLA-DX 9.2 Win32 binaries]
|-
| [http://www.nongnu.org/z80asm/ z80asm] || Bas Wijnen (and others?) || Z80 assembler || (multiple) || Provided as source code ||  
|-
!colspan=6 style="background-color:#ccc"|Compilers
|-
!Name !! Author(s) !! Description !! Platform(s) !! Notes !! Download
|-
| ZCC || Ken Yap, et al || Z80 development package with C compiler || (multiple) || Provided as source code and binaries (Windows); circa January 1996 || [[File:zcc096.zip]]
|-
| [http://sdcc.sourceforge.net/ SDCC] || Sandeep Dutta, et al || "Small Device C Compiler" || (multiple) || Provided as source code and binaries (various platforms) || [http://sdcc.sourceforge.net/snap.php Snapshot Builds]
|-
| [http://www.z88dk.org/forum/ z88dk] || (many people) || z80 C cross compiler with assembler/linker || (multiple) || Provided as source code and binaries (Windows, Mac) || [http://nightly.z88dk.org/?C=M;O=D Nightly Builds]<br/><small>(Hit escape as soon as you see the links for "latest")</small>
|-
!colspan=6 style="background-color:#ccc"|Disassemblers
|-
!Name !! Author(s) !! Description !! Platform(s) !! Notes !! Download
|-
| DASM || Charles Doty || Z80 disassembler || DOS || Source code and binary included. || [[File:dasmz80.zip]]
|-
| [http://www.inkland.org.uk/dz80/ DZ80] || Inkland || Z80 disassembler || (multiple) || Provided as source code (command line version) and binaries (DOS command line, Windows GUI) ||  
|-
| unidasm || MAMEdev || Universal Disassembler || (multiple) || Included with the Windows MAME distribution; can be built from source ||  
|-
| Z80DASM || ? || Z80 disassembler || Windows || Binary || http://trd.speccy.cz/sbor/Z80DASM.ZIP
|}

==Source Editors==
There are a lot of source code editors out there... Use whatever you're comfortable with (hopefully one with 68000 and Z80 syntax highlighting).

==Sound and Music==
{|class="wikitable"
|-
!colspan=6 style="background-color:#ccc"|Music Drivers and Tools
|-
!Name !! Author(s) !! Description !! Platform(s) !! Notes !! Download
|-
| [[MVSTracker]] || Ivan Mackintosh || FM tracker || Windows || [http://www.archaic.fr/interviews/interview-jeff-kurtz-repond-a-nos-questions/3/ Z80 driver does not work on hardware] ||  
|-
| [http://gendev.spritesmind.net/page-mvst.html MVSTracker Suite] || Pascal Bosquet, Kaneda || Modified version of MVSTracker || Windows || supports Mega Drive as well. Neo-Geo driver still doesn't work on hardware. ||  
|-
!colspan=6 style="background-color:#ccc"|Sound Editors
|-
!Name !! Author(s) !! Description !! Platform(s) !! Notes !! Download
|-
| [http://www.goldwave.com/release.php GoldWave] || GoldWave Inc. || commercial sound editor || Windows ||   ||  
|-
| [http://www.sonycreativesoftware.com/soundforgesoftware Sound Forge] || Sony || commercial sound editor || Windows, Mac ||   ||  
|-
| [http://audacity.sourceforge.net/ Audacity] || Audacity developers || open-source sound editor || (multiple) ||   ||  
|-
!colspan=6 style="background-color:#ccc"|Sound Encoders
|-
!Name !! Author(s) !! Description !! Platform(s) !! Notes !! Download
|-
| [https://github.com/freem/adpcma ADPCM-A encoder] || freem || Command-line ADPCM-A encoder || (multiple) || Provided as source code and binary (Windows) ||  
|-
| [http://www.smspower.org/forums/11965-VGMLoggingWithOtherEmulators?start=200#66597 ADPCM-B encoder] || ValleyBell and Fred/FRONT || Command-line ADPCM-B encoder || (multiple) || Provided as source code and binary (Windows) || [[File:ADPCM_Encode.zip]]
|-
| [[Neo Sound Builder]] || Jeff Kurtz/Neobitz || GUI V ROM/PCM file creator || Windows || ADPCM-A only || [https://www.facebook.com/Neobitz/photos/a.462349983789893.110879.221161891242038/1093044660720419/?type=3 announcement post]
|}

==Graphics==
{|class="wikitable"
|-
!colspan=6 style="background-color:#ccc"|Graphics Viewers and Editors
|-
!Name !! Author(s) !! Description !! Platform(s) !! Notes !! Download
|-
| [[YY-CHR]] || YY || multi-format tile editor || Windows || FIX files require plugin (YY-CHR.NET only, see below); Sprites need conversion (see tools below) || [http://www.romhacking.net/utils/119/ YY-CHR 0.99]
|-
| NGFX || blastar || Fix, Sprite, TITLE_*.SYS viewer/editor; LOGO_*.SYS viewer || Windows || WIP; not yet released. || [https://www.romhacking.net/download/utilities/1175/]
|-
| neospriteviewer || Matt Greer || S and C ROM tile viewer || Web ||   || [https://neospriteviewer.mattgreer.dev site]
|-
!colspan=6 style="background-color:#ccc"|Graphics Converters and Tools
|-
!Name !! Author(s) !! Description !! Platform(s) !! Notes !! Download
|-
| [[DATLib]] graphics tools || HPMAN || Tools used to process and display graphics on Neo-Geo. || Windows || Animator, BuildChar, CharSplit, Framer || [https://www.dropbox.com/s/wqviye5xxzktr6y/DATlib_0.3.rar?dl=0 download]
|-
| [[NGGTool|NeoGeo Graphics ToolSuite]] || evo || Tool to convert between SNES/SFC and Neo-Geo graphics. || Windows || Fix conversion is botched (see page for details) || [http://furrtek.free.fr/noclass/neogeo/nggts.zip NGGTS]
|-
| Sprite graphics converter || IQ || Converts MVS graphics (.c*) to CD graphics (.SPR). || Windows ||   || [http://furrtek.free.fr/noclass/neogeo/gfxmvstocd.zip MVS to CD sprite converter]
|-
| [https://github.com/freem/NeoSpriteConv Neo-Geo Sprite Converter] || freem || Convert 4BPP SMS/GG/WSC graphics to Neo-Geo format. || (multiple) || Provided as source code and binary (Windows)<br/><small>Further work required for converting to Cart (split files by words (2 bytes)) and CD (byteswap file)-usable files.</small> || [http://ajworld.net/neogeodev/utils/neosprconv.zip main download]
|-
| [https://github.com/Kannagi/Neoconvert Neoconvert] || Kannagi || Convert PNG to rom Cx with map, palette and HiColor. || Windows,Linux || || [https://github.com/Kannagi/Neoconvert download]
|-
| [https://github.com/Kannagi/Neoextract Neoextract] || Kannagi || extract rom Cx or s1 to bmp. || Windows,Linux || || [https://github.com/Kannagi/Neoextract download]
|
|-
| [https://github.com/city41/sromcrom sromcrom] || Matt Greer || Generate S and C ROMs from images, generates corresponding source code as well || cross platform || || [https://github.com/city41/sromcrom download]
|
|-
| [https://neo-source.com/index.php?topic=4180.msg37936 buildobj] || iq_132 || Compress / Decompress NeoGeo CD OBJ files || Windows || || [https://neo-source.com/index.php?topic=4180.msg37936 buildobj]
|}

==Other Tools==
{|class="wikitable"
|-
!Name !! Author(s) !! Description !! Platform(s) !! Notes !! Download
|-
| MemCardTool || Fabrice Martinez || Memory card manager || Windows ||   || [[File:memcardtool.zip]]
|-
| [https://github.com/freem/romwak ROMwak] || Jeff Kurtz, ported by freem || Binary image manipulation tool || (multiple) || Provided as source code and binary (Windows) ||  
|}

[[Category:Code]]

PLAYER START subroutine

2025-10-06T12:00:13Z

Defalt: corrected reg name

The PLAYER_START subroutine is called by the [[System ROM]] if one of the start buttons are pressed while the corresponding player has enough credits or when the time runs out while the game's title screen is being displayed.

BIOS_START_FLAG ($10FDB4.b) indicates which player(s) pushed start (active high):

{{8BitRegister|-|4|P4|1|P3|1|P2|1|P1|1|}}

This subroutine needs to leave these bits to "1" if the game can be started, or clear them if not.
When the game is started, it has to set to "1" (playing status) the corresponding PLAYER_MODE byte for each player:

*10FDB6.b for P1
*10FDB7.b for P2
*10FDB8.b for P3
*10FDB9.b for P4

After returning, the System ROM deducts credits according to BIOS_CREDIT_DEC.

[[Category:Code]]

PROG board

2025-09-27T00:23:15Z

Defalt: Added PROGEP8M

__NOTOC__

Cartridge PCB which holds the [[P ROM|P]] (68k code) and [[V ROM|V]] (sound) ROMs.

List from [[https://github.com/mamedev/mame/blob/master/src/mame/drivers/neodriv.hxx MAME's source]].

=MVS=

{| class="wikitable"
!Name!!Test!!Max P ROM!!Max V ROM
|-
|[[NPS-PRG1]]||[[UPD4990], BR4090, [[PCM]]
|-
|[[PROG-8MB]]
|-
|[[PROG-EP]]
|-
|[[PROGEP8M]] (Prototype)||[[PCM]]
|-
|[[PROG-G2]]||[[PCM]],[[SNK-9201]]||512*2(+/?)1024
|-
|[[PROG-HERO]]
|-
|[[PROG-NAM]]
|-
|[[PROG16]]
|-
|[[PROG4096]]||[[PCM]]||2*512+1024+2048||3*2048
|-
|[[PROG4096B]]
|-
|[[PROG42G]]
|-
|[[PROG42G-1]]||[[PCM]]||128+1024||4*1024
|-
|[[PROG42G-COM]]
|-
|[[PROG8M42]]
|-
|[[PROGBK1]]||[[PCM]]||?||4*32Mbit
|-
|[[PROGBK2]]
|-
|[[PROGBK2R]]
|-
|[[PROGBK2S]]
|-
|[[PROGBK3R]]
|-
|[[PROGBK3S]]
|-
|[[PROGEOP]]
|-
|[[PROGGSC]]
|-
|[[PROGLBA]]
|-
|[[PROGTOP]]
|-
|[[PROGV]]
|-
|[[PROGMC2]]||[[PCM]]||8192||8192
|}

==NPS-PRG1==
[[Neo Print]] cartridge. Has an [[UPD4990]] and a BR4090 serial EEPROM.

==PROGBK1==

==PROGBK2==

==PROGBK2R==
==PROGBK2S==
==PROGBK3R==
==PROGBK3S==
==PROGEOP==
==PROGGSC==
==PROGLBA==
==PROGSM==
==PROGSS3==
==PROGSF1==
==PROGTOP==
==PROGV (Brezzasoft)==
==PROGMC2 (Prototype Board)==
[[http://www.neogeoprotos.com/games/topsecret2.htm Billy Pit's Neo-Geo Proto Page]] or [[http://www.assemblergames.com/forums/showthread.php?t=23106&page=11]]

[[File:Progmc2.jpg|thumb|300px|Image courtesy of http://www.neogeoprotos.com]]

[[Category:Chips]]
[[Category:Cartridge systems]]
[[Category:Cartridge boards]]

File:TC571001.PNG

2025-09-26T00:04:00Z

Defalt:

File:TC571000.PNG

2025-09-26T00:03:48Z

Defalt:

List of ROM chips

2025-09-26T00:03:27Z

Defalt: /* 128KiB (8 bit) */ Added pinout for TC571000 & TC571001

This page lists equivalent ROM chips. Be careful about the [[memory speed|speed]].

* Mask ROMs aren't reprogrammable. They're [[bootleg|originals]] from SNK in most cases.
* EPROMs are erasable by UV light.
* EEPROMs and flash are similar, and can be reprogrammed electrically.

=32KiB (8 bit)=

{|class="wikitable"
!Reference
!Manufacturer
!Type
!Pin count
!Pinout
|-
|27C256||*||EPROM||28||
|-
|MB83256||Fujitsu||Mask||28||
|-
|LH53259||Sharp||Mask||28||
|-
|TC53257||Toshiba||Mask||28||
|}

=64KiB (8 bit)=

{|class="wikitable"
!Reference
!Manufacturer
!Type
!Pin count
!Pinout
|-
|27C512||*||EPROM||28||
|-
|MB83512||Fujitsu||Mask||28||
|-
|LH53517||Sharp||Mask||28||
|}

=128KiB (8 bit)=

{|class="wikitable"
!Reference
!Manufacturer
!Type
!Pin count
!Pinout
|-
|27C010||*||EPROM||32||[[File:27C010.png|50px]]
|-
|27C101||*||EPROM||32||[[File:27c101.png|50px]]
|-
|27C301||*||EPROM||32||[[File:27c301.PNG|50px]]
|-
|27C1000||*|| || ||
|-
|27C1001||*||EPROM||32||[[File:27c1001.png|50px]]
|-
|MB831000||Fujitsu|| ||32||
|-
|HN62321||Hitachi|| || ||
|-
|uPD23C1000||NEC|| ||28||
|-
|uPD23C1001||NEC|| ||32||
|-
|uPD23C1010||NEC|| ||28||
|-
|LH530800||Sharp|| || ||
|-
|LH531000||Sharp|| || ||
|-
|TC571000||Toshiba||EPROM||32||[[File:TC571000.PNG|50px]]
|-
|TC571001||Toshiba||EPROM||32||[[File:TC571001.PNG|50px]]
|-
|TC531000||Toshiba||Mask||28||[[File:TC531000.PNG|50px]]
|-
|TC531001||Toshiba||Mask||32||[[File:TC531001.PNG|50px]]
|-
|}

=128KiB (16 bit)=

Use this for the [[system ROM]].

{|class="wikitable"
!Reference
!Manufacturer
!Type
!Pin count
!Pinout
|-
|23C1024||*|| || ||
|-
|TC531024||Toshiba|| ||40||
|-
|-
|TC571024D||Toshiba||EPROM||40||
|-
|LH531024||Sharp|| || ||
|}

=256KiB (8 bit)=

{|class="wikitable"
!Reference
!Manufacturer
!Type
!Pin count
!Pinout
|-
|27C020||*|| || ||
|-
|MB832000||Fujitsu|| || ||
|-
|HN62302B||Hitachi|| || ||
|-
|uPD23C2000||NEC|| ||40||
|-
|uPD23C2001||NEC|| ||32||
|-
|LH532100||Sharp|| || ||
|}

=512KiB (8 bit)=

{|class="wikitable"
!Reference
!Manufacturer
!Type
!Pin count
!Pinout
|-
|23C400||*|| || ||
|-
|MB834000||Fujitsu|| ||32||
|-
|HN62401||Hitachi|| || ||
|-
|HN62314B||Hitachi|| || ||
|-
|HN62344B||Hitachi|| || ||
|-
|HN62335B||Hitachi|| || ||
|-
|TC534000||Toshiba|| || ||
|-
|uPD23C4000||NEC|| || ||
|-
|LH534700||Sharp|| || ||
|-
|LH534100||Sharp|| || ||
|}

=1MiB (16 bit)=

{|class="wikitable"
!Reference
!Manufacturer
!Type
!Pin count
!Pinout
|-
|27C160||*||EPROM||42||[[File:27c160.png|50px]]
|-
|TC5716200D||Toshiba||EPROM||42||[[File:TC5716200dpinout.png|50px]]
|-
|MX29F1615||Macronix||Flash||42||[[File:MX29F1615.png|50px]]
|-
|TC5316200AP||Toshiba||Mask||42||[[File:TC5316200AP.png|50px]]
|}

=2MiB (16 bit)=

{|class="wikitable"
!Reference
!Manufacturer
!Type
!Pin count
!Pinout
|-
|27C322||*||EPROM||42||[[File:27c322.png|50px]]
|-
|KM23C32000||Samsung||Mask||42||[[File:KM23C32000.png|50px]]
|}

=4MiB (16 bit)=

{|class="wikitable"
!Reference
!Manufacturer
!Type
!Pin count
!Pinout
|-
|TC5364202AP||Toshiba||Mask||42||*
|-
|29LV640||*||Flash||48/63||*
|-
|}

To add:

<pre>

------------------------------------------------------
Fujitsu

4M 256k x 16 / 512k x 8 MB834100 (40 pin)
4M 256k x 16 / 512k x 8 MB834200 (40 pin)
------------------------------------------------------

Hitachi

EPROM

27512
27C1024H
27C101A
27C301A non-jedec
27C4000
27C4096
27C4001

Mask ROM
--------
Hitachi

2M 128K x 16 / 256K x 8 HN62412/422
128K x 16 HN62442B

4M 256K x 16 / 512K x 8 HN62414/434
256K x 16 / 512K x 8 HN62415
256K x 16 / 512K x 8 HN62W415
256K x 16 / 512K x 8 HN62444
256K x 16 HN62444B
256K x 16 HN62444BN

8M 512K x 16 / 1M x 8 HN62418/428
512K x 16 / 1M x 8 HN62W428
512K x 16 / 1M x 8 HN62438
512K x 16 / 1M x 8 HN62448
512K x 16 / 1M x 8 HN62438N
512K x 16 / 1M x 8 HN62448N
1M x 8 HN62318B/328B
1M x 8 HN62W328B
1M x 8 HN62338B

16M 1M x 16 / 2m x 8 HN624116
1M x 16 / 2m x 8 HN624W116
1M x 16 / 2m x 8 HN624316
1M x 16 / 2m x 8 HN624316N

------------------------------------------------------

NEC
uPD23C4001 32 pin

------------------------------------------------------

Sharp
128k x 16 LH532048
256k x 8 / 128k x 16 LH532000
------------------------------------------------------

Toshiba
512k x 8 / 256k x 16 TC534200
1M x 8 / 512k x 16 TC538000
1M x 8 / 512k x 16 TC538200
2M x 8 / 1M x 16 TC5316200

------------------------------------------------------

EPROM Cross Reference
---------------------
32kx8 64kx8 128kx8 128kx8 64kx16
AMD 27C256 27C512 27C010 27C1024
Fujitsu 27C256 27C512 27C1001 27C1000 27C1024
Hitachi 27C256 27C101 27C301 27C1024
Intel 27C256 27C010 27C210
Mitsubishi 27C256 27C512 27C101 27C100 27C102
NEC 27C256 27C512 27C1001 27C1000 27C1024
OKI 27256
TI 27C256 27C512 27C010 27C210
Toshiba TC57256 TC57512 TC571000 TC571001 TC571024

256kx8 128k x 16 / 256k x 8
AMD 27C020 27C2048
NEC 27C2001

512kx8 512kx8/256kx16
AMD
Fujitsu 27C4000/1 27C4096
Hitachi
Intel
Mitsubishi
NEC 27C4001
OKI
TI
Toshiba TC574000 TC574200

Mask ROM Cross Reference
------------------------
128k x 8 128k x 8
Fujitsu MB831000
Toshiba TC531000 TC531001
Hitachi HN62321/31 HN62321A/31A
Mitsubishi 231000
NEC 23C1000 23C1001
OKI 531000
Sharp LH531000
Sony 381000

64k x 16 64k x 16 512k x 8 / 256k x 16
Toshiba TC531024 TC53H1024 TC534200
Fujitsu MB834100
Hitachi HN62404
Mitsubishi 23C400P
NEC 23C1024
OKI
Sharp 534000

1m x 8 / 512k x 16 2m x 8 / 1m x 16
Fujitsu
Toshiba TC538200 TC5316200
Hitachi HN62801 HN621601
Mitsubishi 23C800P 231600P
NEC 23C8000 23C1600
OKI
Sharp 538100 531601

</pre>

Most infos come from the publicly available romref.txt file.

[[Category:Chips]]
[[Category:Repairs]]