WTB: Bally Astrocade custom I/O chip

ELutz

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As the title says, I need a custom Bally I/O/audio chip. I've got a bad one in a Gorf. This chip was used in Gorf, Wizard Of Wor, Space Zap, Extra Bases, Sea Wolf II...and maybe Robby Roto (not for sure on this one...never actually seen a board set).

Most are AMI chips with the Bally number 0066-117XX. There's other numbers on the chip, but that's the important one. I've also found a chip with MA 0066 070BX...this one works too. And lastly, Bally released a service bulletin stating chip number 2720 is also the same. It's a 40-pin chip. Thanks!

Edward
 
....Also used on professor pac :)
It is used on RobbyRotto as well and 10-pin deluxe among others.
I have spares but not sure if I want to part with them. PM me an offer and I will consider.


You will find that they started putting heatsinks on these customs when they realized how hot they ran so some had them and some didnt. They used a slightly modified TO-220 heatsink glued to the chip. I have a bunch of the same PN NOS heatsinks if you want to add them. I highly reccomend it for the 115XXX chip as its more likely to fail from heat than the 117XXX.
 
Last edited:
....Also used on professor pac :)
It is used on RobbyRotto as well and 10-pin deluxe among others.
I have spares but not sure if I want to part with them. PM me an offer and I will consider.


You will find that they started putting heatsinks on these customs when they realized how hot they ran so some had them and some didnt. They used a slightly modified TO-220 heatsink glued to the chip. I have a bunch of the same PN NOS heatsinks if you want to add them. I highly reccomend it for the 115XXX chip as its more likely to fail from heat than the 117XXX.

Thanks Riptor. PM sent.

Edward
 
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