Galaxian Hardware Help

Stoog

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Trying to get these 3 game running on Galaxian hardware but seems they just don't want to work

2 of them i own and other one i have seen running on this hardware through a multi game mod.

Games are

Checkman
Dockman/Porter
Dingo

Both Checkman/Dockman i own but sadly the rom code/roms them selfs are no good on both of them. I have tried to reprogram the roms from mame but the boards refuse to boot. Both boards do work if i fit a standard Galaxian rom card which pretty much is the same type of system used for those 2 games. I can't see any other wire mods/cut tracks on both PCBs so i really don't know why it just refuses to boot

Anyway long story short i made a single rom mod PCB and been trying to make any of these 3 games work but still they refuse to boot or just sit in watch dog over and over again. If i fit either Galaxian/Moon Cresta single rom i made board boots fine and plays expect for MC GFX but thats due to not having the correct GFX rom card in

I have updated the boot ram to a 6116

Can anyone explain why they refuse to work am i doing something wrong?
 
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Trying to get these 3 game running on Galaxian hardware but seems they just don't want to work

2 of them i own and other one i have seen running on this hardware through a multi game mod.

Games are

Checkman
Dockman/Porter
Dingo

Both Checkman/Dockman i own but sadly the rom code/roms them selfs are no good on both of them. I have tried to reprogram the roms from mame but the boards refuse to boot. Both boards do work if i fit a standard Galaxian rom card which pretty much is the same type of system used for those 2 games. I can't see any other wire mods/cut tracks on both PCBs so i really don't know why it just refuses to boot

Anyway long story short i made a single rom mod PCB and been trying to make any of these 3 games work but still they refuse to boot or just sit in watch dog over and over again. If i fit either Galaxian/Moon Cresta single rom i made board boots fine and plays expect for MC GFX but thats due to not having the correct GFX rom card in

I have updated the boot ram to a 6116

Can anyone explain why they refuse to work am i doing something wrong?

Checkman and Dockman don't run on stock galaxian hardware... it's far closer to Fitter / The Pit / Intrepid.

Shitloads of games get lumped into the galaxian MAME driver since they use variations on the same basic video generation circuits, but that doesn't mean they'll actually run on stock galaxian hardware.
 
I can understand that and thanks for your input but what gets me is i got both checkman/dockman pcbs which are both bootleg galaxians pcbs. Both PCBs i can run standard Galaxian software in.

I have gone over these with a ohms meter and checking with standard Galaxian schematics trying to work out what mods have been done besides the rom cards and came up with nothing to stop it from booting in the cpu section

The only thing that comes to mind is that the code that originally where on these 2 pcbs were modded to make work compared to the ones in mame
 
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#1. You need to learn the difference between galaxian and moon cresta hardware.
#2. "Real" checkman and dingo boards have a second CPU driving an AY-3-8910, so your hacks won't have anywhere near correct audio.
 
This is another PCB I got from the same old op which is the same type of board brand as dockman/checkman i have this ones just really dusty/dirty and needs alittle bit of TLC but the board itself will clean up nicely.

Its badged EDM-28.

This one comes up in romident on a few of the roms as Crazy Kong on Scramble hardware. The rom cards has been modded to suit 5 X 2732 eproms and the 4th eprom is a 2716 with pin 20 pulled from socket and soldered directly to the 5th eprom to Pin 20 (both /OE) nothing else

From there a wire to Pin 10 of 8E on PCB. On 8E Pin 5 been cut and lifted and a wire is heading off to Pin 4 of 8L which also has been cut/lifted

Ill get a photo of Checkman later tonight and post it up

This mod on this pcb is very close to this one i found on arcadexmission

http://arcarc.xmission.com/Tech/Hardware Mods and Info/Crazy Kong on Galaxian 1of3.pdf
 

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i finally got checkman working now on original pcb it came on i can make this also work as a single rom with no daughter card alo

working on port man/dockman next

with whats left of the code from port man it seems to match very close to dockman but sadly i really think these roms where either custom modded to suit a galaxian or a version not dimped before but seeing how i go all else fails ill just find a port man working if there around
 
Well good news i got Port Man working on Galaxian hardware now using a single rom :)

so case closed on both of these games all is left is the look at/repair the crazy kong and happy days :)

I wont be worrying about Dingo as i just going to order the 18 in 1 Multi PCB

Thanks for every ones help/replies
 
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