Hardware DIPs

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File:Mvs dip.jpg
Hard DIPs on MV1F MVS board.
File:Harddips.png
DIP switches on MVS boards.

Physical switches on MVS boards used to configure various options like freeplay and multiplayer link. The switches states are readable through register $300001 (REG_DIPSW).

  • Switch 8: Freeze (done by software, in a BIOS call)
  • Switch 7: Enable freeplay
  • Switch 6: Enable communication
  • Switches 4~5: Multiplayer link cab number setting
  • Switch 3: Mahjong Controller
  • Switch 2: Coin slots configuration
  • Switch 1: Test mode

There's no such switches on AES and CD systems ($300001 reads what ?).

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