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Need Help Making a MAME Machine out of a Mortal Kombat 1 Cabinet
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robneal81:
Hi Everyone,

I'm just starting my first actual arcade project and would to ask for some help from the experts.  I have a lot of experience with MAME, MaLa and building "arcade machines", this is just the first time I'm using a real arcade cabinet and not a PC with RGB monitor and X-Arcade. 

I bought a Mortal Kombat 1 machine that is in perfect working order.  I then bought a J-Pac, unplugged the MK1 board and plugged in my PC (which has an ArcadeVGA card, Windows 7 and MaLa/MaMe pre-configured).  Everything works great except the following:

- The screen resolution looks weird.  Can I set it to the exact resolution & refresh rate of the MK monitor?  Arcade Perfect keeps crashing on me...is that the only way to do it, or is there another tool?  Also...what exactly is the best resolution and refresh rate to use for the monitor in an MK machine?

- The bottom buttons (LP/LK) don't work for either player 1 or 2.

- I haven't tried wiring the sound yet.

My short term goal is to get the MAME machine running perfectly.  Then, I'd eventually like to add a JAMMA switch that goes between PC-via-JAMMA, original MK1 and MK2 (the arcade machine came with both MK1 and MK2 boards).  If I need to cut wiring harnesses to wire the bottom buttons and sound, should I start by buying a JAMMA switch now and do it all at once?

I tried hooking up the MK2 board and just plugged in the JAMMA harness, nothing else.  Everything worked perfect except sound (since the sound board wasn't plugged in)...and the bottom buttons.  I assume that means one of the other wiring harnesses is for the bottom buttons?

Anyway, I figured this forum would be the best place to start.  Thanks in advance for any help you can give.
Malenko:
the MKs require a kick harness for the bottom buttons (and for run in MK3/UMK3)
robneal81:

--- Quote from: Malenko on September 07, 2013, 02:21:01 pm ---the MKs require a kick harness for the bottom buttons (and for run in MK3/UMK3)

--- End quote ---

Thank you.  How would I go about getting one and integrating it with the MK2 + J-Pac?
paigeoliver:
You will need to adjust your monitor. Your arcadevga is probably outputting a video signal at the standard 60hz while Mortal Kombat ran at 53hz and the monitor was no doubt adjusted with the Mortal Kombat board running.

I have found you pretty much need to adjust every darn knob on the monitor when moving from running a MK or newer Midway board to anything else.
robneal81:
I was able to get the screen resolution looking good enough and I wired the sound, which works fine.  The only thing left is getting the bottom buttons (buttons 4 & 5 for each player) working.  Can I wire that directly into the J-Pac, or do I need an IPAC for that?
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