Hardware DIPs: Difference between revisions

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[[File:mvs_dip.jpg|right|thumb|Hard DIPs on MV1F MVS board.]]
[[File:mvs_dip.jpg|right|thumb|Hard DIPs on MV1F MVS board.]]
[[File:harddips.png|right|thumb|DIP switches on MVS boards.]]
[[File:harddips.png|right|thumb|DIP switches state '''viewer''' in the [[system ROM]].]]


Used to configure various options like freeplay and multiplayer link. The switches states are readable through register '''$300001 (REG_DIPSW)'''.
Physical DIP switches on MVS boards used to configure various options like the number of coin chutes and the multiplayer link. The switches states are read through register {{Reg|REG_DIPSW}} as a byte (0 is on).


*Switch 8: Freeze (performed in a BIOS call ?)
* Switch 8: Freeze - pauses the game (done by software in a [[system ROM]] call)
*Switch 7: Enable freeplay
* Switch 7: Enable freeplay (player start doesn't require credits)
*Switches 4~6: [[Multiplayer]] link cab number setting
* Switch 6: Enable communication
*Switch 3: Enable autofire ?
* Switches 4~5: [[Multiplayer]] link cab number (in binary: 1, 2, 3, 4)
*Switch 2: Coin slots configuration ?
* Switch 3: Enable [[mahjong controller]]
*Switch 1: [[Test mode]]
* Switch 2: Number of [[coin switch|coin chutes]] (1 or 2 Euro & Japan, 2 or 4 on USA)
* Switch 1: Bring up the system ROM menu at boot


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


[[Category:Cartridge system]]
The {{PCB|MV4}} has an unused footprint for a second set of DIP switches "DSW2" which could have been read through register {{Reg|REG_SYSTYPE}}.
 
[[Category:Cartridge systems]]

Latest revision as of 15:08, 2 September 2019

File:Mvs dip.jpg
Hard DIPs on MV1F MVS board.
File:Harddips.png
DIP switches state viewer in the system ROM.

Physical DIP switches on MVS boards used to configure various options like the number of coin chutes and the multiplayer link. The switches states are read through register REG_DIPSW 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 Euro & Japan, 2 or 4 on USA)
  • Switch 1: Bring up the system ROM menu at boot

There are no such switches on home and CD systems.

The MV4 has an unused footprint for a second set of DIP switches "DSW2" which could have been read through register REG_SYSTYPE.