Karate Champ single to versus help

mecha

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have a Karate Champ with the single player software, the CP and bezel are for 2 players however. (just read that the 2 player one was the only one intended for the US market)

I was wondering if this is just a rom upgrade, but the other obvious hurdle is what needs to be changed with the wiring harness to get the other 2 joysticks?
 
yeah, I'll have to look closer at the harness and see if there's some extra wires floating around in there.

if it happens to be all there, this should just be a mere rom swap then right? (hole drilling aside)
 
as far as the CP - have you checked to see if the hole is "pre-punched"?

I've had 2 different single player karate champs CPs that have had both "holes" already there - but just needed to have them actually knocked out. Kinda of like an electrical box hole punch-out.

Although admittedly I never actually knocked them out (so I don't know if it would be impossible and you'd have to drill anyway) just saw that the partial cut was there.
 
as far as the CP - have you checked to see if the hole is "pre-punched"?

I've had 2 different single player karate champs CPs that have had both "holes" already there - but just needed to have them actually knocked out. Kinda of like an electrical box hole punch-out.

Although admittedly I never actually knocked them out (so I don't know if it would be impossible and you'd have to drill anyway) just saw that the partial cut was there.

I'll have to see about this. that would be cool if so. :p

That's a fair amount of ROMs that need to be burned, if the info at the Solvalou site is correct. I presume you currently have the Karate Champ (US) and you want the Karate Champ (US VS) version…

http://www.solvalou.com/subpage/arcade_roms/K/kchampvs

p

why. does. this. old. game. have. so. many. roms. wow

great resource, thank you. I might be better off just buying a 2 player board. they're out there. I have to confirm the harness situation first though.
 
have a Karate Champ with the single player software, the CP and bezel are for 2 players however. (just read that the 2 player one was the only one intended for the US market)

I was wondering if this is just a rom upgrade, but the other obvious hurdle is what needs to be changed with the wiring harness to get the other 2 joysticks?

Just swap boards.

Single player has a different memory map, ios, and sound hardware.
 
Just swap boards.

Single player has a different memory map, ios, and sound hardware.

yep, that's my plan.

the 2P wiring is intact and the holes do indeed punch out. however the P2 start button was bondo-ed for some reason, I'll see if I can chisel that out.

the other strange issue is what joysticks did these come with? the mounting bolts are identical position to the Sanwa joysticks you find on a candy cabinet,
 
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