Re: Zip cache RAM

[cdeschu@nyx10.cs.du.edu (Chris Deschu)]

In article <35591k$gl1@jabba.cybernetics.net>,
Wayne Gretzky <mspaeth@cybernetics.net> wrote:
>In article <butchCw1K7A.C7D@netcom.com> butch@netcom.com (Gabe Sanchez) writes:
>>Paul Creager (wily@svpal.org) wrote:
>>: I have the ill-fated ISSI 15ns chips, which aren't running stable. 
>>
>>Oh god, stay away from ISSI! They are not the greatest things out there.
>>Get Toshiba or some other brand, anything (almost) but ISSI!
>
>I've been doing signal quality testing on SRAM for IBM here in Charlotte,
>so for once, I can almost consider my self an authority on the topic :)
>
>I'd look at IDT (Integrated Device Technology) and Samsung, but avoid 
>Alliance... I have some Mosel, Paradigm, and Winbond chips to test too,
>but I havent' looked at them yet...
>
>note that I test the small packages, so the wide sram may be totally 
>differenct, but you can always modify the card to use thin sram.


	Cool... Hey, I have some Paradigm SRAM in my TWGS. 
The numbers on the chip are as follows:

Paradigm
PDM41256SA15
02373 9239

	They are the narrow type, and obviously 15ns, but how would
you tell if they are low power? I'd be interested to know how the
Paradigm SRAM does in your tests.
	My TWGS can only do like 9mhz with any kind of stability.
I personally think it's the CPU (I have one of the WDC experimental
ones, from like a year ago, not the new 14mhz ones), but I'd like to
eliminate the SRAM as a possible problem source before I replace
the CPU. Oh, I also have the correct GALs. Thanks!
-- 
___________________________________________________________________________
 |___              Chris Deschu                       cdeschu@nyx.cs.du.edu
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