Namco System 246/256
| Namco System 246/256 | |
|---|---|
|
| |
| Manufacturer | Namco |
| Year | 2001 |
| Media | CD-ROM, DVD-ROM, Hard-disk, 8MB Security Dongle |
| CPU | 128 Bit Emotion Engine |
| GPU | Graphics Synthesizer operating at 150 MHz |
| Sound | SPU2+CPU |
| Resolution | 15k / 31k |
| Wiring Standard | JVS |
| Predecessor | Namco System 10 |
| Successor | Triforce |
The Namco System 246/256 is an arcade platform based on the Sony Playstation 2. Sometimes referred to as Namco 2x6, as the two hardwares are very similar and run much of the same software.
The system is comprised of a motherboard and optical or hard disk drive, housed in a large metal case. Software runs either straight off the hard disk, or from supplied optical media (usually a DVD but some CD versions exist), alongside a security dongle which is cosmetically identical to a PS2 memory card. The security dongle dictates the region the game will run in.
Contents |
Hardware
There are 4 known revisions of the System 2x6 hardware. The 246 Rev.A is the most common, notable for being physically the largest of the motherboards. It runs the majority of System 246 titles, but some games require a Rev.B or Rev.C motherboard. The Rev.B contains additional hardware required to run more complex titles such as Ridge Racer V. The Rev.C motherboard is notable by it's smaller physical size and is thought to be able to run all System 246 titles. Lastly the System 256 is backwards compatible with all System 246 titles and will also run later games such as Tekken 5.
DVD Drive
In the majority of cases, System 246 uses DVD as it's storage system. The hardware accesses the DVD drive all the time as the game plays, including in attract mode. Due to this the DVD drive will fail eventually. Fortunately, regular DVD drives work in System 246 units, but not all DVD drives are compatible. Compatibility appears to rely on the replacement DVD drive having a compatible chipset or at least compatible ATAPI command set. The following drives have been tested[1].
| Manufacturer | Model | Status |
|---|---|---|
| Hitachi / LG | H-L Data Storage LG GSA-4164B Super Multi DVD Drive (09-2005) | Working |
| Hitachi / LG | H-L Data Storage LG GSA-4082B Super Multi DVD Drive (02-2004) | Working |
| Hitachi / LG | H-L Data Storage LG GCC-4120B CD-RW/DVD-ROM Drive (04-2002) | Working |
| Lite-On | IT Corp DVD-ROM/CD Re-Writable Drive LDW-451S (03-2004) | Not Working |
| NEC | DV-5800C DVD-ROM Drive (02-2004) | Working |
| Pioneer | DVD-106S/2 Slot Load DVD-ROM Drive (05-2002) | Not Working |
| Samsung | SD-616 DVD-ROM Drive (12-2001) (Factory Supplied) | Working |
| Samsung | SD-M1802 (Factory Supplied) | Working |
| Samsung | SD-816 (Factory Supplied) | Working |
| Sony | DW-U10A (05-2003) (Factory Supplied) | Working |
| Toshiba | SD-M1612 DVD-ROM Drive (01-2003) (Factory Supplied) | Working |
| Toshiba | SD-M1712 DVD-ROM Drive (11-2003) | Not Working |
Game List
Maintained 246/256 Software List Source
| English Name | Japanese Name | Publisher | Year | Game ID | Dongle # | Media # | Drive # | 246 Driving | 246 Rev A | 246 Rev B | 246 Rev C | 256 Rev A | Video Res | CD/DVD/HDD | Gamepad | IO | Network | IC Card | Website | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alpine Racer 3 | アルペンレーサー3 | Namco | 2001 | Debate over if this game ever came out in the arcades | ||||||||||||||||
| Battle Gear 3 | バトルギア3 | Taito | 2002 | NM00010 | B3900065A | M9005793A VER.2 | 15/31 Khz | HDD | Drive Wheel | Lan | IC Card is actually a special Key, Game requires a very specific Taito JVS IO PCB to run. | |||||||||
| Battle Gear 3: Tuned | バトルギア3 Tuned | Taito | 2003 | NM00015 | B3900074A | 15/31 Khz | HDD | Drive Wheel | Lan | [1] | There might only be one version but the dongle I have has a "B3900074C" over the original "B3900074A" label. | |||||||||
| Battle Gear 3: Tuned Rev.C | バトルギア3 Tuned | Taito | 2003 | NM00015 | B3900074C | M9006066A VER.2.03J | 15/31 Khz | HDD | Drive Wheel | Lan/Net | [2] | IC Card is actually a special Key, Game requires a very specific Taito JVS IO PCB to run. | ||||||||
| Bloody Roar 3 | ブラッディロア3 | Namco | December, 2000 | NM00002 | BRT1, Ver.A | BRT1-A | 15 Khz | CD | Buttons | None | [3] | Drive Specific | ||||||||
| Capcom Fighting Jam | カプコン ファイティング ジャム | Capcom | 2004 | NM00018 | JAM1, Ver.A | JAM1 DVD0 | 15/31 Khz | DVD | Buttons | None | ||||||||||
| Capcom Fighting All Stars | カプコン ファイティング オールスターズ | Capcom | Unreleased | Buttons | ||||||||||||||||
| Cobra: The Arcade | コブラ・ザ・アーケード | Namco | November, 2005 | CBR1, Ver.A | CBR1-HA | HDD | Light Gun | Lan | [4] | |||||||||||
| Cobra: The Arcade Rev.B | コブラ・ザ・アーケード | Namco | November, 2005 | CBR1, Ver.B | CBR1-HA | HDD | Light Gun | Lan | [5] | |||||||||||
| Dragon Chronicle: Legend of the Master Ark | ドラゴンクロニクル 伝説のマスターアーク | Namco | 2002 | Touchscreen | Server | [6] | ||||||||||||||
| Dragon Chronicle: Online | ドラゴンクロニクル オンライン | Namco | 2004 | NM00020 | DCO01, Ver.A | DCO31-TS CD0 | 15/31 Khz | CD | Touchscreen | Server | [7] | Media# from Ver2.12 | ||||||||
| Dragon Chronicle II | ドラゴンクロニクル2 | Namco | 2003 | Touchscreen | Server | Debate if this is an Unreleased game or just a mistaken Dragon Chronicles Online | ||||||||||||||
| Druaga Online: The Story of Aon 1.00 | ドルアーガオンライン The Story of Aon 1.00 | Namco | April, 2006 | NM00028 | DOL1001-ST-DVD0-A | DVD | Touchscreen | Server | [8] | Server: DOL110-1-CT-MPR0-A | ||||||||||
| Druaga Online: The Story of Aon 1.10 | ドルアーガオンライン The Story of Aon 1.10 | Namco | April, 2006 | NM00028 | DOL110-1-ST-DVD0-C | DVD | Touchscreen | Server | [9] | Server: DOL110-1-CT-MPR0-C | ||||||||||
| Druaga Online: The Story of Aon 1.20 | ドルアーガオンライン The Story of Aon 1.20 | Namco | April, 2006 | NM00028 | DOL120-1-ST-DVD0-D | DVD | Touchscreen | Server | [10] | Server: DOL120-1-CT-MPR0-D | ||||||||||
| Druaga Online: The Story of Aon 1.40 | ドルアーガオンライン The Story of Aon 1.40 | Namco | April, 2006 | NM00028 | DOL140-1-ST-DVD0-F | DVD | Touchscreen | Server | [11] | |||||||||||
| Druaga Online: The Story of Aon 1.50 | ドルアーガオンライン The Story of Aon 1.50 | Namco | April, 2006 | NM00028 | DOL150-1-ST-DVD0-G | DVD | Touchscreen | Server | [12] | Server: DOL150-1-CT-MPR0-G | ||||||||||
| Druaga Online: The Story of Aon 1.60 | ドルアーガオンライン The Story of Aon 1.60 | Namco | April, 2006 | NM00028 | DOL160-1-ST-DVD0-H | DVD | Touchscreen | Server | [13] | Server: DOL160-1-CT-MPR0-H | ||||||||||
| Druaga Online: The Story of Aon 1.65 | ドルアーガオンライン The Story of Aon 1.65 | Namco | April, 2006 | NM00028 | DOL165-1-ST-I | Touchscreen | Server | [14] | ||||||||||||
| Druaga Online: The Story of Aon 1.70 | ドルアーガオンライン The Story of Aon 1.70 | Namco | April, 2006 | NM00028 | Touchscreen | Server | [15] | |||||||||||||
| Gun Survivor 3: Dino Crisis | ガンサバイバー3 ディノクライシス | Capcom | Lignt Gun | Debate over if this game ever came out in the arcades | ||||||||||||||||
| Fate/Unlimited Codes | フェイト/アンリミテッドコード | Capcom | 2008 | NM00048 | FUD1, Ver.A | FUD1-HDD0-A | 15/31 Khz | HDD | Buttons | None | [16] | |||||||||
| The iDOLM@STER | アイドルマスター | Namco | July, 2005 | NM00022 | IDMS1, Ver.A | IDM1-HA | 15/31 Khz | HDD | Touchscreen | [17] | ||||||||||
| The iDOLM@STER Rev.D | アイドルマスター | Namco | July, 2005 | NM00022 | IDMS1, Ver.D | IDM1-HA | 15/31 Khz | HDD | Touchscreen | [18] | ||||||||||
| Kinnikuman: Muscle Grand Prix | キン肉マン マッスルグランプリ | Namco | 2006 | NM00029 | KN1, Ver.A | KN1-B | 15/31 Khz | DVD | Buttons | None | [19] | |||||||||
| Kinnikuman: Muscle Grand Prix 2 | キン肉マン マッスルグランプリ2 | Namco | 2007 | KN2, Ver.A | KN2 | "KN2" | 15/31 Khz | DVD | Buttons | None | [20] | |||||||||
| Mobile Suit Gundam: Gundam vs. Gundam | 機動戦士ガンダム ガンダムVS.ガンダム | Capcom | 2008 | NM00043 | GVS1, Ver.A | GVS1 DVD0B | GVS | 15/31 Khz | DVD | Buttons | Lan | [21] | ||||||||
| Mobile Suit Gundam: Gundam vs. Gundam Next | 機動戦士ガンダム ガンダム vs. ガンダム NEXT | Capcom | 2009 | NM00052 | GNX1001-NA-A | GNX100-1-NA-HDD0-A | 15/31 Khz | HDD | Buttons | Lan | [22] | |||||||||
| Mobile Suit Gundam Seed: Rengou vs. ZAFT | 機動戦士ガンダムSEED 連合 vs. Z.A.F.T. | Capcom | 2005 | NM00024 | SED1, Ver.A | SED1 DVD0 | 15/31 Khz | DVD | Buttons | Lan | [23] | |||||||||
| Mobile Suit Gundam Seed Destiny: Rengou vs. ZAFT II | 機動戦士ガンダムSEED Destiny 連合 vs. Z.A.F.T. II | Capcom | June, 2006 | NM00034 | GSD1, Ver.A | GSD1 DVD0 | 15/31 Khz | DVD | Buttons | Lan | [24] | |||||||||
| Mobile Suit Z Gundam: AEUG vs. Titans | 機動戦士Ζガンダム エゥーゴ vs. ティターンズ | Capcom | December, 2003 | NM00013 | ZGA1, Ver.A | ZGA1 DVD0 | 15/31 Khz | DVD | Buttons | Lan | [25] | |||||||||
| Mobile Suit Z Gundam: AEUG vs. Titans DX | 機動戦士Ζガンダム エゥーゴ vs. ティターンズ DX | Capcom | August, 2004 | NM00017 | ZDX1, Ver.A | ZDX1 DVD0 | ZDX | 15/31 Khz | DVD | Buttons | Lan | [26] | ||||||||
| Minna de Kitaeru Zenno Training | みんなで鍛える全脳トレーニング | Namco | December, 2006 | NM00036 | ZNT100-1-ST-A | ZNT100-1-NA-DVD0 | DVD | Touchscreen | Server | [27] | ||||||||||
| Minna de Kitaeru Zenno Training 1.50 | みんなで鍛える全脳トレーニング | Namco | 2007 | NM00036 | ZNT100-1-ST-A | ZNT150-1-NA-DVD0-B | DVD | Touchscreen | Server | [28] | ||||||||||
| Netchuu Pro Yakyuu 2002 Rev.B | 熱チュー!プロ野球2002 | Namco | 2002 | NM00009 | NPY1, Ver.B | NPY1 CD0B | 15 Khz | CD | Buttons | None | [29] | Drive Specific | ||||||||
| Netchuu Pro Yakyuu 2002 Rev.C | 熱チュー!プロ野球2002 | Namco | 2002 | NM00009 | NPY, Ver.C | NPY1 CD0C | 15 Khz | CD | Buttons | None | [30] | Drive Specific | ||||||||
| Pride GP 2003 | Pride GP 2003 | Capcom | 2003 | PR21, Ver.A | DVD | Buttons | None | |||||||||||||
| Quiz Kidou Senshi Gundam: Tou Senshi | クイズ機動戦士ガンダム 問・戦士 | Namco | 2006 | NM00030 | QG1, Ver.A | S-372 32737 QG1 | DVD | Buttons | None | [31] | ||||||||||
| Raizin Ping Pong | ライジンピンポン | Taito | 2001 | Doubt if this is a 246 game. PCB doesn't look like a System 246. | ||||||||||||||||
| Ridge Racer V: Arcade Battle | リッジレーサーV アーケードバトル | Namco | 2000 | NM00001 | RRV(1/2/3), Ver.A | RRV1-A | 15 Khz | CD | Race Wheel | iLink | [32] | Drive Specific, Requires drive motor "V257 STR PCB" to function | ||||||||
| Ridge Racer V: Arcade Battle Rev. B | リッジレーサーV アーケードバトル | Namco | 2000 | NM00001 | RRV(2/3), Ver.B | RRV1-A | 15 Khz | CD | Race Wheel | iLink | [33] | Drive Specific, Requires drive motor "V257 STR PCB" to function | ||||||||
| Rockman EXE: Battle Chip Stadium | ロックマンエグゼ バトルチップスタジアム | Capcom | Fall 2005 | |||||||||||||||||
| Samurai Surf X | 波侍 サムライサーフX | Namco | 2002 | |||||||||||||||||
| Sengoku Basara X | 戦国バサラX | Capcom | 2008 | NM00042 | BAX1, Ver.A | BAX1 DVD0 | 15/31 Khz | DVD | Buttons | None | [34] | |||||||||
| Smash Court Pro Tournament | スマッシュコート プロトーナメント | Namco | 2001 | NM00006 | SCP1, Ver.A | SCP1 CD0 | 15/31 Khz | CD | Buttons | None | Drive Specific | |||||||||
| Soul Calibur II | ソウルキャリバーII | Namco | July, 2002 | NM00007 | SC2(1/3), Ver.A | SC21 DVD0 | 15/31 Khz | DVD | Buttons | None | [35] | |||||||||
| Soul Calibur II Rev. B | ソウルキャリバーII | Namco | July, 2002 | NM00007 | SC2(1/3), Ver.A | SC21 DVD0B | 15/31 Khz | DVD | Buttons | None | [36] | |||||||||
| Soul Calibur II Rev. D | ソウルキャリバーII | Namco | July, 2002 | NM00007 | SC2(1/3), Ver.D | SC21 DVD0D | 15/31 Khz | DVD | Buttons | None | [37] | |||||||||
| Soul Calibur III: Arcade Edition | ソウルキャリバーIII | Namco | 2006 | NM00031 | SC31001-NA-A | SC31001-NA DVD0-A | 15/31 Khz | DVD | Buttons | None | [38] | |||||||||
| Soul Calibur III: Arcade Edition Rev. B | ソウルキャリバーIII | Namco | 2006 | NM00031 | SC31001-NA-A | SC31001-NA DVD0-B | 15/31 Khz | DVD | Buttons | None | [39] | |||||||||
| Starblade: Operation Blue Planet | スターブレード オペレーションブループラネット | Namco | Unreleased | |||||||||||||||||
| Quiz & Variety SukuSuku Inufuku 2: More SukuSuku | クイズ&バラエテイすくすく犬福2: もつとすくすく | Hamster | 2007 | NM00037 | IN2, Ver.A | HM-IN2 | 15/31 Khz | CD | Buttons | None | [40] | |||||||||
| Super Dragon Ball Z | 超ドラゴンボールZ | Namco | 2005 | NM00027 | DB1, Ver.B | DB1 | 15/31 Khz | DVD | Buttons | None | [41] | |||||||||
| Taiko Drum Master 7 / Taiko no Tatsujin 7 | 太鼓の達人7 | Namco | September, 2005 | TK71, Ver.A | TK71 DVD0 | Analog Drum | None | [42] | ||||||||||||
| Taiko Drum Master 8 / Taiko no Tatsujin 8 | 太鼓の達人8 | Namco | March, 2006 | NM00033 | TK81001-NA-A | Analog Drum | None | [43] | ||||||||||||
| Taiko Drum Master 9 / Taiko no Tatsujin 9 | 太鼓の達人9 | Namco | December, 2006 | NM00038 | TK91001-NA-A | TK9100-1-NA-DVD0-A | TK9 | 15/31 Khz | DVD | Analog Drum | None | [44] | ||||||||
| Taiko Drum Master 10 / Taiko no Tatsujin 10 | 太鼓の達人10 | Namco | September, 2007 | NM00041 | TK101001-NA-A | TK10100-1-NA-DVD0-A | 15/31 Khz | DVD | Analog Drum | None | [45] | |||||||||
| Taiko Drum Master 11 / Taiko no Tatsujin 11 | 太鼓の達人11 | Namco | March, 2008 | NM00044 | T111001-NA-A | T11100-1-NA-DVD0-A | T11 | 15/31 Khz | DVD | Analog Drum | None | [46] | ||||||||
| Taiko Drum Master 11 Asian Version / Taiko no Tatsujin 11 A | 太鼓の達人11 亚洲版 | Namco | April, 2008 | DVD | Analog Drum | None | [47] | |||||||||||||
| Taiko Drum Master 12 / Taiko no Tatsujin 12 | 太鼓の達人12 | Namco | December, 2008 | NM00051 | T121001-NA-A | T12-NA | 15/31 Khz | HDD | Analog Drum | None | [48] | |||||||||
| Taiko Drum Master 12 More / Taiko no Tatsujin 12 More | 太鼓の達人12 増量版 | Namco | July, 2009 | NM00051 | T121001-NA-A | T12-HA | 15/31 Khz | HDD | Analog Drum | None | [49] | Requires USB Dongle "T12" to run | ||||||||
| Taiko Drum Master 12 Asian Version / Taiko no Tatsujin 12 A | 太鼓の達人12 亚洲版 | Namco | 2009 | HDD | Analog Drum | None | [50] | |||||||||||||
| Taiko Drum Master 13 / Taiko no Tatsujin 13 | 太鼓の達人13 | Namco | December, 2009 | T1301-NA-A | T1301-NA-HDD0-A | HDD | Analog Drum | None | [51] | |||||||||||
| Taiko Drum Master 14 / Taiko no Tatsujin 14 | 太鼓の達人14 | Namco | September, 2010 | HDD | Analog Drum | None | [52] | |||||||||||||
| Technic Beat | テクニクビート | Arika | 2002 | NM00003 | TNB1, Ver.A | TNB1 DVD0 | 15/31 Khz | DVD | Buttons | None | [53] | There seems to be a miss-print with the dongles for this game. I've found two with "NM00003" IDs yet this is the ID for Vampire Night. | ||||||||
| Tekken 4 | 鉄拳4 | Namco | July, 2001 | NM00004 | TEF(1/2/3), Ver.A | TEF1 DVD0 | 15/31 Khz | DVD | Buttons | None | [54] | Drive Specific | ||||||||
| Tekken 4 Rev. B2 | 鉄拳4 | Namco | July, 2001 | NM00004 | TEF(1/2/3), Ver.B2 | TEF1 DVD0 | 15/31 Khz | DVD | Buttons | None | [55] | Drive Specific | ||||||||
| Tekken 4 Rev. C | 鉄拳4 | Namco | July, 2001 | NM00004 | TEF(1/2/3), Ver.C | TEF1 DVD0 | 15/31 Khz | DVD | Buttons | None | [56] | Drive Specific | ||||||||
| Tekken 4 Rev. D | 鉄拳4 | Namco | July, 2001 | NM00004 | TEF(1/2/3), Ver.D | TEF1 DVD0 | 15/31 Khz | DVD | Buttons | None | [57] | Drive Specific | ||||||||
| Tekken 5 | 鉄拳5 | Namco | December, 2004 | NM00019 | TE5(1/2/3), Ver.A | TE51 DVD0 | 15/31 Khz | DVD | Buttons | None | [58] | |||||||||
| Tekken 5.1 - Jpn | 鉄拳5.1 | Namco | December, 2004 | NM00019 | TE51, Ver.C3 | TE51 DVD0B | 15/31 Khz | DVD | Buttons | Net | [59] | |||||||||
| Tekken 5.1 - USA | 鉄拳5.1 | Namco | December, 2004 | NM00019 | TE5(2/3), Ver.B | TE52 DVD0B | 15/31 Khz | DVD | Buttons | None | [60] | |||||||||
| Tekken 5: Dark Resurrection | 鉄拳5 Dark Resurrection | Namco | December, 2005 | NM00026 | TED(1/2), Ver.A | TED1 DVD0 | TED | 15/31 Khz | DVD | Buttons | None | [61] | ||||||||
| Tekken 5: Dark Resurrection Rev. B | 鉄拳5 Dark Resurrection | Namco | December, 2005 | NM00026 | TED1 DVD0B | 15/31 Khz | DVD | Buttons | None | [62] | ||||||||||
| The Battle of Yu Yu Hakusho: Dark Tournament | The Battle of幽遊白書 死闘! 暗黒武術会 | Namco | 2006 | NM00035 | YH1, Ver.A | YH1 | 15/31 Khz | DVD | Buttons | None | [63] | |||||||||
| Time Crisis 3 | タイムクライシス3 | Namco | 2002 | NM00012 | TST1, Ver.A | TST1 DVD0 | DVD | Light Gun | None | [64] | ||||||||||
| Time Crisis 4 | タイムクライシス4 | Namco | June, 2006 | NM00032 | TSF1002-NA-A | TSF1-HA | 15/31 Khz | HDD | Light Gun | None | [65] | |||||||||
| Vampire Night | ヴァンパイアナイト | Namco/Sega | 2000 | NM00003 | VPN2, Ver.B | 15 Khz | Light Gun | None | [66] | |||||||||||
| Wangan Midnight | 湾岸ミッドナイト | Namco | 2001 | NM00008 | WMN2, Ver.A | WMN2-A | 15 Khz | CD | Drive Wheel | iLink | [67] | Requires drive motor "V??? STR PCB" to function | ||||||||
| Wangan Midnight Rev. B | 湾岸ミッドナイト | Namco | 2001 | NM00008 | WMN2, Ver.B | WMN2-A | 15 Khz | CD | Drive Wheel | iLink | [68] | Requires drive motor "V??? STR PCB" to function | ||||||||
| Wangan Midnight R | 湾岸ミッドナイトR | Namco | 2002 | Drive Wheel | [69] | |||||||||||||||
| Zoids Infinity | ゾイドインフィニティ | Taito | 2004 | NM00016 | B3900076A | M9006212A Ver.2.02J | 15/31 Khz | HDD | Lan/Net | Button configuration is not standard JVS, Coin Meter 1 must be wired on JVS harness to function | ||||||||||
| Zoids Infinity Ex | ゾイドインフィニティ EX | Taito | 2005 | NM00025 | B3900098B | 15/31 Khz | HDD | Lan/Net | Button configuration is not standard JVS, Coin Meter 1 must be wired on JVS harness to function | |||||||||||
| Zoids Infinity Ex Plus | ゾイドインフィニティ EX Plus | Taito | 2006 | NM00025 | B3900107A | M9006907A Ver.2.10JP | 15/31 Khz | HDD | Lan/Net | [70] | Button configuration is not standard JVS, Coin Meter 1 must be wired on JVS harness to function |
I/O Boards
The Namco 2x6 is pseudo-JVS and will require a JAMMA I/O in order to function in JAMMA cabinets. Namco have their own I/O specifically created for the 2x6, but most JVS-to-JAMMA I/O boards will work including the popular Capcom I/O.
Namco I/O
The Namco I/O supports 6 buttons per player via the 10 pin JST connector located on the front right of the pcb. The full pinout is as follows (practically identical to the CPS1 and ST-V pinout):-
1=GND
2=NC
3=P1 Button 4
4=P1 Button 5
5=P1 Button 6
6=NC
7=P1 Button 4
8=P1 Button 5
9=P1 Button 6
10=GND
Capcom Fighting Jam is the only known 2x6 game which uses 6 buttons, buttons 4-5-6 are short-forward-roundhouse. Tekken 4 assigns right kick to button 4 and left kick to button 5. Soul Calibur II and III assign guard to button 5 (the SC3 manual states kick is duplicated on button 4 too).
The Namco I/O also supports stereo sound via the onboard amp. Once you set the system to stereo via the test menu, the left channel will be output via JAMMA pins L (neg) and 10 (pos), the right channel via the 4 pin JST connector located on the front right of the I/O. The pinout is as follows:-
1=NC
2=NC
3=Right +
4=Right -
Capcom I/O
The Capcom I/O is fully compatible with the Namco 2x6. It uses the standard Capcom CP2/3 kick harness. However, the Capcom I/O uses a standard JVS 8 pin amp connector for power, where as the Namco 2x6 employs a 6 pin power connector. A JVS power supply adapter which comes bundled with 2x6 kits may let you use a Capcom IO to power the Namco 246 out-of-the-box with some success (this is confirmed to work with Capcom Fighting Jam, but not with more power-hungry titles such as Tekken 4). The adaptor is shown on the cabinet connections diagram in 2x6 kit manuals. Alternatively with this adapter a JVS power supply can be used to power the 2x6 directly, leaving the existing JAMMA power supply to power the I/O board.