20 Oct
2010
20 Oct
'10
2:26 p.m.
On Wed, 20 Oct 2010 17:15:29 -0400, Ethan Dicks <ethan.dicks at gmail.com>
wrote:
Interesting thought... I probably have some 4164s around somewhere as well.
Having said that, last night I bought a couple of MCM4517s from a Chinese
seller on eBay. Their feedback seems pretty good, but I am wondering if
I'll receive dead parts, or maybe even compeltely different parts with fake
labelling. I'll be optimistic for the moment I guess! If it doesn't work, I
might see if I can find a known-good 4164 around my place, and give it a
try. Thanks for the heads-up on that one.
Mike
> I also enjoy getting dead machines going; my
current challenge is
finding
RAM for a Sega
SC3000H. I was hoping someone might have some spare
MCM4517s for sale (from memory, hopefully that number's right),
Those are just
+5V-only 16Kx1 DRAMs, right? The pinout is the same as
the 4164 except for pin 9 (NC on a MCM4517, A7 on a 4164).
Could you use a 4164 instead? (it might require a pull-up or
pull-down on pin 9 so it doesn't float). Those are rather abundant
and still available from a number of sources.