Akira Wiring Help

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Lo-Res
Posts: 8
Joined: Fri Jul 10, 2020 3:02 pm

Akira Wiring Help

Post by Lo-Res » Sat Jul 11, 2020 10:50 am

Hey guys, I know there's 2 other threads on here about Akira but i have a couple questions that I couldn't find answers to in those threads.

first off, Akira uses a Taito-TC0190 pcb which has 28 pins for both the PRG and CHR sockets. I will be using a M27C020 for PRG (256kb) and M27C010 (128kb) for the 2 CHRs (using famirom to split the CHR). both of these EPROMS are 32 pin and I would like to know how these should be inserted into the sockets. I'm guessing pins 1,2,31,32 are lifted and pin 3 of the EPROM will insert into hole 1 of the sockets? I've only done games so far that have had 32 pin sockets so I'm unsure how they go into a 28 pin socket.

As for wiring, the only pinout I can find is the actual TC0190 chip pinout which I can use to follow the traces back to the PRG & CHR sockets. Looking at another pinout for the EPROMS I think I can figure out the changes needed and wire it up.

TC0190 pinout:
http://wiki.nesdev.com/w/index.php/Taito_TC0190_pinout

Eprom pinout:
https://thepoorstudenthobbyist.files.wo ... .png?w=700

Following both these diagrams should be ok?

The game is still in the mail so I'm just going off what I see on NesCartDB and these diagrams trying to get ready for when it arrives. Any help appreciated

lidnariq
Posts: 9491
Joined: Sun Apr 13, 2008 11:12 am
Location: Seattle

Re: Akira Wiring Help

Post by lidnariq » Sat Jul 11, 2020 2:31 pm

Lo-Res wrote:
Sat Jul 11, 2020 10:50 am
I'm guessing pins 1,2,31,32 are lifted and pin 3 of the EPROM will insert into hole 1 of the sockets? I've only done games so far that have had 32 pin sockets so I'm unsure how they go into a 28 pin socket.
That's a reasonable guess.
Following both these diagrams should be ok?
In general, connect the same name to the same name. If you have specific questions, ask them.

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