15 Aug
2005
15 Aug
'05
3:17 p.m.
From: "Allison" <ajp166 at
bellatlantic.net>
Ahhh! 0.6 centers. Seems like I've seen these on something
else I have for a KIM expansion card. I do have a NEC data
book someplace with the specs on the UPD410D's. It might
also include a cross reference. Some of the data books did
this.
Dwight
Subject: Re: Memory chip substitute?
From: "Dwight K. Elvey" <dwight.elvey at amd.com>
Date: Mon, 15 Aug 2005 10:54:11 -0700 (PDT)
To: cctalk at classiccmp.org
Not even close. The upd410 is 18pin .6" centers. Pins are the same as
TMS4060 and intel 2107 save for the 410 had a static core, the other were
dynamic.
Allison
From: "Allison" <ajp166 at
bellatlantic.net>
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
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