Re: Zip GSX

[wbaguhn@nyx10.cs.du.edu (Will Baguhn)]

In article <gg84681@pro-palmtree.cts.com>,
Richard Der <rder@pro-palmtree.cts.com> wrote:
> 
>Tom O'Neill <tdon@delphi.com> wrote:
>>John Lesher <lesherjt@vuse.vanderbilt.edu> writes:
>>>Is there someplace that anybody knows of where I could get the
>>>"wide" 32k SRAMs.  Please don't tell me to check Mates' homepage
>>
>>Regards,
>>Tom
> 
>JDR Microdevices has wide HM62256LP-70. These chips are 32k x 8,
>70ns fast, and 600 mil wide. US $4.69. Perfect for the Zip GS.
> 
>JDR Microdevices: phone: 1-800-538-5000
>                  fax: 1-800-538-5005
>                  bbs: 1-408-494-1430
>                  web: http://www.jdr.com
> 
>I have 4 of these chips in a 10/64 (upgraded from a 7MHz model).
>They've been operating without a glitch for a year and a half and
>still going.
> 
>JDR also has full TTL oscillators.
> 
>Don't know why the Zip FAQ writers claim you need even faster
>SRAMs. The 7MHz models used to come with 100ns chips. This 10MHz
>upgraded unit operates flawlessly with 70ns chips. Of course you
>might need faster chips to move to 15MHz.
>
>
>-----
>The Palmtree BBS  310-453-8726 v.32
>Inet: rder@pro-palmtree.cts.com
>

Just about everyone (Jameco, Digikey, etc) has Full TTL oscillators.
While you may not NEED 15ns, you're guaranteed that they'll keep up.
And... I take a good snicker when I think that once upon a time, my
Zip GSX's cache was once a 128k cache in a Pentium.

I think it'll be just fine.  :)


-- 
                                      --- Rev. SPQR (wbaguhn@nyx.net)