[Convert tuto] Namco System 2 : any game in Rolling Thunder 2 jap

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    • [Convert tuto] Namco System 2 : any game in Rolling Thunder 2 jap

      This tutorial is for owners of Namco System 2 boards who wish to make a Rolling Thunder 2 jap convert (which has become quite difficult to find) at a lower cost, from any system game belonging to this list (gun games and race games have a second board not compatible for the convert) :

      - Assault ;
      - Assault Plus ;
      - Cosmo Gang - The Video ;
      - Burning Force ;
      - Dirt Fox ;
      - Dragon Saber ;
      - Finest Hour ;
      - Marvel Land ;
      - Mirai Ninja ;
      - Ordyne ;
      - Phelios ;
      - Legend of the Valkyrie ;
      - Golly! Ghost! ;
      - Kyuukai Douchuuki ;
      - Bubble Trouble.


      Prerequisite :

      - an eprom programmer ;
      - ten 27c040 (or 27c4001) eproms, seven 27c010 (or 27c1001) and two 27c512 ;
      - a Namco System 2 game from the list above ;
      - an hex editor like Winhex ;
      - Rolling Thunder 2 romsets : parent and the jap one (can be easily found around the Web and available in MAME) ;
      - a soldering iron ;
      - a diode with Vf <= 0.4V (this does the job perfectly : fr.farnell.com/stmicroelectron…w=table&iscrfnonsku=false )


      1/ Application of patches to the program roms :

      Unzip the jap romset of the game, and using your hex editor, apply the following patches to both program roms mpr0j.bin and mpr1j.bin :

      Patches to apply to mpr0j.bin :

      Address : Values : before => after :
      0x00002069 : 66 => 4E
      0x0000A4E6 : 67 => 4E
      0x00002045 : 00 => 4E

      Patches to apply to mpr1j.bin :

      Address : Values : before => after :
      0x00002069 : C4 => 71
      0x0000A4E6 : 06 => 75
      0x00002041 : F9 => FC
      0x00002042 : D0 => 00
      0x00002043 : 04 => 10
      0x00002044 : 10 => 02
      0x00002045 : 02 => 71


      2/ Programming and installation of the eproms :

      Unclip all the eproms from your game boards in use (except sys2mcpu and sys2c65c), program the new eproms with the parent and jap sets (including the 2 modified program roms) then install them as follows :

      To place on the upper board (the motherboard with the Jamma connector) :

      mpr0j.bin (CRC32 b73a212a after applying the patches) (27c010) has to be placed on the socket with MPR0 silk-screen printing ;
      mpr1j.bin (CRC32 364a1a17 after applying the patches) (27c010) has to be placed on the socket with MPR1 silk-screen printing ;
      spr0j.bin (CRC32 f8ef5150) (27c512) has to be placed on the socket with SPR0 silk-screen printing ;
      spr1j.bin (CRC32 52ed3a48) (27c512) has to be placed on the socket with SPR1 silk-screen printing ;
      snd0.bin (CRC32 55b7562a) (27c010) has to be placed on the socket with SND0 silk-screen printing ;
      snd1.bin (CRC32 00445a4f) (27c010) has to be placed on the socket with SND1 silk-screen printing ;
      chr0.bin (CRC32 6f0e9a68) (27c040) has to be placed on the socket with CHR0 silk-screen printing ;
      chr1.bin (CRC32 15e44adc) (27c040) has to be placed on the socket with CHR1 silk-screen printing ;
      shape.bin (CRC32 cf58fbbe) (27c040) has to be placed on the socket with SHAPE silk-screen printing ;
      data0.bin (CRC32 0baf44ee) (27c010) has to be placed on the socket with DATA0 silk-screen printing ;
      data1.bin (CRC32 58a8daac) (27c010) has to be placed on the socket with DATA1 silk-screen printing ;
      data2.bin (CRC32 8e850a2a) (27c010) has to be placed on the socket with DATA2 silk-screen printing ;
      voi1.bin (CRC32 e42027cd) (27c040) has to be placed on the socket with VOICE1 silk-screen printing ;
      voi2.bin (CRC32 0c4c2b66) (27c040) has to be placed on the socket with VOICE2 silk-screen printing.

      To place on the lower board (video board) :

      obj0.bin (CRC32 e5cb82c1) (27c040) has to be placed on the socket with OBJ0 silk-screen printing ;
      obj1.bin (CRC32 19ebe9fd) (27c040) has to be placed on the socket with OBJ1 silk-screen printing ;
      obj2.bin (CRC32 455c4a2f) (27c040) has to be placed on the socket with OBJ2 silk-screen printing ;
      obj3.bin (CRC32 fdcae8a9) (27c040) has to be placed on the socket with OBJ3 silk-screen printing ;
      roz0.bin (CRC32 482d0554) (27c040) has to be placed on the socket with ROZ0 silk-screen printing.


      3/ Jumpers settings :

      Positions of the jumpers required on the top board (the motherboard with the Jamma connector) :

      JP60 (* [O--])
      JP66 (* [--O])
      JP68 (* [--O])
      JP67 (* [--O])
      JP88 (* [--O])
      JP86 (* [--O])
      JP80 (* [O--])
      JP87 (* [--O])
      JP15 (* [--O])

      Positions of the jumpers required on the lower board (video board) :

      JP3 (* [--O])
      JP4 (* [O--])
      JP1 (* [O--])
      JP2 (* [--O])
      JP8 (* [--O])
      JP7 (* [O--])
      JP6 (* [O--])
      JP5 (* [O--])


      4/ Hardware modification :

      The hardware modification is relatively simple, and without it the converts would not run.

      Start by locating the socket with PC50 silk-screen printing (located in 5G) on the lower board (video board) (this is the socket which normally supports the game key, but empty in the case of a convert), then place the diode under the socket on the soldering side as shown on the picture (picture taken by Paul Swan, thanks to him) below :




      Once the change has been made, you are now in possession of a functional Rolling Thunder 2 jap convert, good game !!

      The post was edited 15 times, last by Layer33 ().

    • Thank you ! Hope i will be able to find next year a system 2 board :whistling: . Happy holidays ! ^^

      update : i've made the byteswap for mpr0j and mpr1j files . awesome (now need the board and eeproms + resistence)
      Multi's: CPS2 / Taito F3 / Irem M72
      Superguns : HAS v3.1
      Scalers : OSSC v1.6 / RetroTINK-2X
      Scart switch : Gscartsw V5.2
      JNX: Spitfire
      NAC: Splitfire





      My Arcade Stuff

      [nes-101] [pce] [genesis] [segacd] [neogeo] [snes] [saturn] [psx] [n64] [gamecube] [dreamcast_ss]

      The post was edited 1 time, last by AlxUnderBase ().

    • Grabbed today a “Golly Ghost” after 6 months of searching for a Namco System 2 (on a great price -more than half about the cheapest compatible pcb ive found on tops,surugaya or Japan auctions) board compatible with this conversion :saint:
      Multi's: CPS2 / Taito F3 / Irem M72
      Superguns : HAS v3.1
      Scalers : OSSC v1.6 / RetroTINK-2X
      Scart switch : Gscartsw V5.2
      JNX: Spitfire
      NAC: Splitfire





      My Arcade Stuff

      [nes-101] [pce] [genesis] [segacd] [neogeo] [snes] [saturn] [psx] [n64] [gamecube] [dreamcast_ss]