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 (done by software in a system ROM call)
 * Switch 7: Enable freeplay
 * Switch 6: Enable communication
 * Switches 4~5: Multiplayer link cab number (in binary: 1, 2, 3, 4)
 * Switch 3: Mahjong Controller
 * Switch 2: Number of coin chutes (1 or 2)
 * Switch 1: Test mode

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