What's new

WTB MB8431 dual port RAM used on Irem M72 hardware (except R-Type)

Want To Buy
Ape Cosplay

Ape Cosplay

Grand Master
Joined
Sep 1, 2023
Messages
356
Reaction score
770
Location
Metaverse
Hi all,

Looking for a spare MB8431 chip found on the top board (M72-C) of Irem M72 boardsets except R-Type.
It is important to note it's the MB8431 I need, located @H4/IC14. It's working as a slave paired with the MB8421 (master) @J4/IC15.
Comes in a quite rare SDIP52 package.

Thanks.

[EDIT]
Can also be found on:
- Sega System 32 left side COMM board (right side has a MB8421)
- Sega Model 1 COMM board
- Data East Thunder Zone/Desert Assault
 
Last edited:
I bought one of these from utsource way back in 2017 to repair a M72 game
 
I tried that before posting a WTB, either they didn't have the stock they claimed to have or I was slapped with a no thanks price (and atrocious shipping on top of that).

(Working on the CUS120 repro with @caius BTW, we're very close)
 
Ape Cosplay said:
I tried that before posting a WTB, either they didn't have the stock they claimed to have or I was slapped with a no thanks price (and atrocious shipping on top of that).

(Working on the CUS120 repro with @caius BTW, we're very close)
Click to expand...
Awesome news :D
 
Hammy said:
I have a bunch of them (maybe 6-7), you can have, expect some will be dead but i can't test.

There's a way to remake it with 6116 ram and a bunch of buffers, i hope this is why you need them :)
Click to expand...
Great, just to be sure that's the MB8431 I need.
Sorry to disappoint, not looking to reproduce those with standard SRAM, just trying to repair my board.
 
You must log in or register to reply here.
Back
Top