Konami GX-361 - 6809?

slicknick13

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Hi all,

I've got a dead track and field board here. However, it seems at some point Konami ditched the whole Konami-1 and custom chip thing and went with a vanilla 6809 based board.

Are there any schematic or ROM images out there that I can check this board with? I got the CPU to quit watchdogging, but all I get is some color on the bottom of the screen which goes away about an inch at a time.
 
However, it seems at some point Konami ditched the whole Konami-1 and custom chip thing and went with a vanilla 6809 based board.

So it's a legit Konami PCB, with no 42-pin Konami1 CPU, but instead a standard 40-pin 6809?
Is there any identification on the EPROMs? Can you dump them and compare to the images in MAME?

I don't see any evidence in MAME of an un-encrypted version of T&F, but in general I have an interest in finding a way to convert Konami1 CPU PCBs to work with a regular 6809 (i.e. generating or finding unencrypted romsets, and creating a CPU adapter of some sort).
 
if it's a bootleg, they did a hell of a job. Let me throw some pics up in a minute.

I dumped the 5 ROMS by the CPU, figuring they were the program. The do not match any of the MAME sets.
 
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Did you run the roms thru this?: http://romident.coinopflorida.com/
I don't see any bootleg T&F sets in MAME, but there is a wacky Yie Ar Kung Fu "GX-361 conversion" set (yieartf) that appears to have used a regular 6809...
 
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Here it is:
IMG_1072.JPG
 
I'm not convinced that it's a bootleg. It looks fairly legit to me.
Those EPROM labels look more like what I've seen on legit Konami PCBs than on boots...

However, while I've seen quite a number of early 80s Konami PCBs... none have been T&F, so I'll defer to a bona fide T&F expert.

I'd be curious to look at the code dumps, to at least see if it disassembles as reasonable 6809 code...
 
I've fixed a couple of these and as far as I can tell they look to be real Konami boards sans the custom chips. The five program ROMs do not match what is in MAME but everything else does.

The schematics I've found for this are only for the version with the custom chips.
 
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