Memory chip substitute?

Dwight K. Elvey dwight.elvey at amd.com
Mon Aug 15 12:54:11 CDT 2005


>From: "Allison" <ajp166 at bellatlantic.net>
>
>>
>>Subject: Memory chip substitute?
>>   From: "Richard A. Cini" <rcini at optonline.net>
>>   Date: Mon, 15 Aug 2005 11:12:20 -0400
>>     To: CCTalk <cctalk at classiccmp.org>
>>
>>All:
>>
>>	I'm repairing a few S100 memory boards and I'm having trouble
>>crossing a memory chip on the SSM MB7 16k board. The chip is an NEC UPD410D.
>>I have D5101LC1's "in stock". Are these equivalent?
>
>No, not even close.
>
>UPD410 is a fairly fast semistatic 4kx1.  5101 is cmos 256x4.
>
>What memory board has a upd410 on it?  Very unusual.
>
>
>Allison
>

Hi
 It seems like 4044 and 6044 are both 4Kx1 chips. These
were used on HeathKit H8 8K memory boards. I'd suspect that
they might work. The onlt source I've found is a local
place called Anchor Electronics. I don't recall if they
have a web page.
Dwight

Dwight





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