|Viewing Issue Advanced Details|
|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)|
|Version||0.135||Fixed in Version||Build||Normal|
|Summary||03532: rungun, rungun2, soccerss, vsnetscr, rushhero: Konami dual output isn't supported|
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|
|Affected Sets / Systems||rungun, rungun2, soccerss, vsnetscr, rushhero|
21 days ago
|All the games listed seem to support the dual output as of 0.187.|