Found this interesting MVS Garou-Repro-PCB from China

[ArcadeTV]

I was lucky and got my hands on this chinese MVS repro-cart.
The PCB is very small which would dramatically cut down production costs once someone figures out the code on the 2 CPLDs
wink @Darksoft
my project-idea would be to reproduce these.

I made some scans after I cleaned the PCBs, also took some photos, see here:
https://picasaweb.google.com/115948745418514736250/MVSGarouRepro?authuser=0&feat=directlink

 

[Mitsurugi-w]

That is interesting. It has very few components. Everything is obviously hand-soldered which is not difficult with those packages. Looks like the Altera is programmed from the P2 connector?

 

[ArcadeTV]

Yes, both PCBs have JTAG-connections. I'm tempted to hook it up to my Altera-USB-Blaster and see if the guys who flashed these CPLDs forgot to set the fusebits
I will send it over to Darksoft.

 

[Darksoft]

That is interesting. It has very few components. Everything is obviously hand-soldered which is not difficult with those packages. Looks like the Altera is programmed from the P2 connector?

They are programmed using JTAG from those 6 holes connectors that you can see on the side. You stitch your programmer there and program the CPLD quick.

 

[Darksoft]

Yes, both PCBs have JTAG-connections. I'm tempted to hook it up to my Altera-USB-Blaster and see if the guys who flashed these CPLDs forgot to set the fusebits
I will send it over to Darksoft.

If you can read that out, you'll make my day

 

[ArcadeTV]

I tried it with an Altera USB-Blaster. No luck

 

[Darksoft]

I tried it with an Altera USB-Blaster. No luck

Do you have one of those Namco system 256 I/O like this one:

If so, can you try to read it out?

 

[ArcadeTV]

Thanks to the german post-officers on strike the package with the cart came back to me 2 days ago
I'll send it again so you can do your magic.

 

[l_oliveira]

My System 246 I/O (that I/O on the picture is actually for 246 and so is pictured metal casing) has blown inputs and I suspect it's the Altera chip that is faulty. So that subject is of extreme interest for me.