HOW TO CONVERT A JAMMA CAB TO MAME- 3 EASY STEPS!

Hello. I'm looking for some help on setting up MAME on a 31khz 640x480 CRT - it came in a Naomi cab and is not tri synch, so I'm assuming I've "stuck" at this resolution.

I've got a fresh Win XP 32 bit build. The PC has a low end nVidia 7xxx series onboard.

To start with, should I install Soft 15khz or not? I've had a go at this already, and it detected my graphics card. I'm assuming I should appl the 31khz modes to it, and not the 15 and 25 modes?

And should I then be using GroovyMAME or another version?

I've had a rather frustrating time with this today, and right now MAME is crashing when it starts. Thank you in advance :)

Thank you. I did try an ATI card earlier, but all I had kicking around was a 6850 - from what I can gather, CRT_emudriver only works up to the 4000 series. Looks like I've sorted out a 3000 series now, so can try that next week.

I won't get to tinker anymore until next week now, hopefully I'll now have more luck.

Thanks again :)

Thank you. That's what I thought. So I get an ATI card, install the modded drivers (CRT Emulator) and still need to run VMMAKER? Then GroovyMame has SwitchRes which takes care of everything?

I think I've just about got this worked out in my head The link Crunchie posted has good instructions, but I get lost at this point on VMMAKER:

1. Look for Monitortype. Change "CUSTOM" to one of the following:
   
   • "GENERIC" if you have a 15KHz monitor.
   • "EGA" if you have a 24KHz monitor.
   • Leave it on "CUSTOM" if you have a 31KHz monitor and make a few more changes:
     
     • monitor_specs0 31400-31500, 49.50-65.00, 0.940, 3.770, 1.890, 0.349, 0.064, 1.017, 0, 0, 512, 800
     • XresMin_XML = 512
     • YresMin_XML = 400

So I leave it at Custom as I'm running 31khz, but where for those "few more changes" go? I can't see any corresponding lines in the ini file, so I just throw them in there somewhere?

Thanks :)

I'm hoping to get away with the monitor it comes with and "live with" the resolution (line double and a scanlines png to help things along). Saying that, I'm not sure I can get decent colour on the monitor, I need to spend more time adjusting it. Right now it's not looking too great.

That may be another thread though :)

Thank you. Looks like I was over complicating things earlier. I'll install Windows XP again and start from scratch :)

Ah.. Maybe so.. But this guide applies to win XP.. If you had followed the instructions to the last detail (with a PC with winXP) you would have had instant success..

Reposting this here after strict orders from the Shark 

I've got my first JAMMA to MAME cab conversion to start 
Currently a JAMMA Leisure 2000 cab with all its wiring and original working monitor (which I'm watning to use).
I'm wanting to be able to still run jamma pcbs and also a PC with a mame setup..

On the shopping list:

1 & 2 Player Button
8 x Coloured Buttons
2 x IL Eurostyle Joystick
2 x Daisy chain wiring
JPAC
DELL Vostro 200 2.4ghz PC with suitable gfx card to use with my monitor.

Is this list really all that I need?

The original speakers and marque lighting still works, so just hoping to use them somehow with the mame.
Stereo amp from the line out on the PC with achieve that so i've been told, but would I have to swap them dependon if i'm using the jamma or mame setup?

Good work! Thanks ;)

Great info, seems very simple and straightforward

Once I get access to the FOR SALE part of this site I assume I can buy the cab etc there - need everything but PC and software as I can build that myself :)

Thanks

Just what ive been looking for.
Great useful post.