Hardware DIPs



Physical DIP switches on MVS boards used to configure various options like coin-up and multiplayer link. The switches states are read through register as a byte (0 is on).


 * Switch 8: Freeze - pauses the game (done by software in a system ROM call)
 * Switch 7: Enable freeplay (player start doesn't require credits)
 * Switch 6: Enable communication
 * Switches 4~5: Multiplayer link cab number (in binary: 1, 2, 3, 4)
 * Switch 3: Enable mahjong controller
 * Switch 2: Number of coin chutes (1 or 2)
 * Switch 1: Bring up the system ROM menu at boot

There are no such switches on home and CD systems.