Capcom 85H001 sound module reproduction

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    • Capcom 85H001 sound module reproduction

      It's a replacement module I designed to replace the original one used on the following Capcom boards:
      - Ghosts'n Goblins/Makaimura
      - Avengers
      - Legendary Wings/Aresu no tsubasa
      - Section Z
      - Trojan/Tatakai no banka
      - Gun Smoke
      - Black Tiger/Black Dragon

      I know of 3 different types (there might be more) which are interchangeable between games:
      - Ceramic module without any marking: seen on Makaimura first run for instance
      - Plastic module ref. 85H001 5I
      - Plastic module ref. 85H001 5H

      I don't have much time at the moment so I plan to sell bare PCBs for now.

      Needed parts:
      - 2 rows of 30 male header pins
      - 1 * Z80 CPU (DIP40)
      - 1* 6116 type RAM (DIP24, narrow 0.3" package)
      - 1 * 74LS08 (DIP14)
      - 1 * 74LS21 (DIP14)
      - 2 * 74LS74 (DIP14)
      - 2 * 74LS138 (DIP16)
      - 1 * 74LS139 (DIP16)
      - 1 * 74LS174 (DIP16)
      - 1 * 74LS367 (DIP16)
      - 27 * 10kΩ resistor (1/8, 1/6 or 1/4W are fine)
      - 11 * 100nF capacitor

      First solder header pins:



      IC layout: BE CAREFUL ONE OF THE LS138 HAS TO BE REVERSE MOUNTED



      Capacitors:



      Resistors have to be mounted vertically:



      Module fits in place of the original one, I advise to install a socket. It must be installed so references of ICs on the replacement module are legible the same way ICs on the board:



      Quick video of the module tested on Trojan:



      Quick video of the module tested on Ghosts'n Goblins:



      Bare PCBs are now for sale $13 shipped worldwide in an envelope.
      Looking for:
      - faulty Space Harrier or Enduro Racer
      - Super Nintendo CPU (3 needed)
      - Sega trackball I/O board 837-8685 (will be reproduced and gerbers made freely available)



      "I'd 1cc games but I have a real life."
      01010011 01000101 01000011 01010010 01000101 01010100 00100000 01001101 01000101 01001110 01010101 00100000 01000111 01010101 01011001

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

    • Bare PCBs are now for sale $13 shipped worldwide in an envelope.
      Looking for:
      - faulty Space Harrier or Enduro Racer
      - Super Nintendo CPU (3 needed)
      - Sega trackball I/O board 837-8685 (will be reproduced and gerbers made freely available)



      "I'd 1cc games but I have a real life."
      01010011 01000101 01000011 01010010 01000101 01010100 00100000 01001101 01000101 01001110 01010101 00100000 01000111 01010101 01011001

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

    • Most games use a Z80 @ 3 or 4Mhz so Z80A or Z80B are a safe bet.
      Looking for:
      - faulty Space Harrier or Enduro Racer
      - Super Nintendo CPU (3 needed)
      - Sega trackball I/O board 837-8685 (will be reproduced and gerbers made freely available)



      "I'd 1cc games but I have a real life."
      01010011 01000101 01000011 01010010 01000101 01010100 00100000 01001101 01000101 01001110 01010101 00100000 01000111 01010101 01011001