Hardware DIPs

File:Mvs dip.jpg

Hard DIPs on MV1F MVS board.

File:Harddips.png

DIP 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 (performed 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 ?).