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ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
03532 Gameplay Minor Always Nov 13, 2009, 15:24 21 days ago
Tester Haze View Status Public Platform MAME (Self-compiled)
Assigned To Resolution Fixed OS
Status [?] Resolved   Driver
Version 0.135 Fixed in Version Build Normal
Summary 03532: rungun, rungun2, soccerss, vsnetscr, rushhero: Konami dual output isn't supported
Description these games (in rungun.c and konamigx.c) are meant to support dual monitor output, like X-Men 6 player version.

This is a 2-part process, firstly there is a Konami custom on the PCBs which acts as a multiplexer, allowing display data for 2 screens to be rendered with a single set of chips. This appears to somehow transparently banks ram.

The displays for each screen are then output in alternate frames via JAMMA.

There is an additional Konami splitter board that plugs into the JAMMA and sends the alternating frames to the correct monitor.

Hooking this up in MAME is difficult, and means invalding all the tilemaps every frame (because their data changes for each screen)

I'm adding this report more as a reminder, and for a place to leave information about how this multiplexing works.
Steps To Reproduce
Additional Information
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Regression Version
Affected Sets / Systems rungun, rungun2, soccerss, vsnetscr, rushhero
Attached Files
 


-  Notes
User avatar
No.13960
Osso
(Developer)
21 days ago
All the games listed seem to support the dual output as of 0.187.