Help with monitor preset for MS9-29S

[Quaristice]

Hi everyone,

I'm trying to get my monitor settings correct for vmmaker and mame ini. I have tried various presets including cga, ms929, generic, arcade-15 etc. All give me different results and i can manually correct any resolutions using arcade osd no problem. Running any other emulator using my corrected resolutions gives me perfect results.

The problem i am having is with groovymame ini. When i put custom and use my vmmaker settings for crt_range0 im getting some games which are getting cut off on the horizontal axis. Verticle is fine as i have a verticle adjustment pot i can use for games over 240 lines. For example 384 x 224 will be ok and centered the best it can, looks great. But 256 x 240 for example will be too short at one side, or some games will be off the screen at one edge? I understand this is overscan/undersan and relates to my monitor settings in vmmaker and the mame ini. What i can't seem to achieve is the correct settings to give me most games centered on the horizontal axis. Can anybody point me in the right direction as i have tried and searched ajust about everything I can think of at the moment.

I have attached both my mame ini and vmmaker ini for reference.

regards Paul

[Calamity]

Hi Quaristice,

If you are able to get your modes centered by using ArcadeOSD, you need to manage to translate those timings into custom crt_range lines, which will be use by GroovyMAME to achieve similar results. GroovyMAME won't pick the modes you just adjusted with ArcadeOSD. In other words, you need to tell GroovyMAME the "rules" you had to apply in order to get those modes centered, and that's codified by the horizontal porch values you can get from ArcadeOSD. This process has been explained in dozens of threads, so you'll find plenty of information in this subforum.

You may find that getting low horizontal resolution games centered is way more difficult than with higher resolutions. My advice is to always use a dotclock_min value of 8.0 in mame.ini (and possibly in vmmaker.ini too, but that will compromise other emulators). This way low resolution modes will be scaled on the horizontal, allowing for much finer centering.