Re: 6402 / 32k cahce group buy still on?

[Rubywand <rubywand@swbell.net>]

Supertimer writes ...
> 
> mjmahon@aol.com (Michael J. Mahon) wrote:
> 
> >Any chance this is in regard to ZipGS cache chips?
> >
> >I've been trying to find 62256's to expand the cache with very little
> >luck--0.6" SRAMs are getting to be "obsolete".
> 
> There are adapter sockets available.  They plug into the
> 0.6 sockets and the 0.3 chips plug into them.  ;-)
> 
> Jeff Blakeney provided all the sources a few weeks ago.
> You might want to scan DejaNews for his post or just
> email him for the information.
> 
> If I remember correctly, DigiKey is the company that
> sells the adapters.
> 
> This is far less risky than modifying the Zip to directly
> accept 0.3 chips.

     The ZipGS socket mod is not all that risky for someone with a little experience using a soldering iron. Mainly, you need to have a decent iron ('pecil type', about 30-35 watts with a narrow, pointy tip), a damp sponge to wipe the tip; and, use good quality rosin core solder (something like Kester Multi-core, 63 tin alloy).

     There are a few problems with using the socket adapters you mention: they are fairly expensive, they add to card thickness-- your RAMs may end up bumping against an adjacent Slot board, and they add another set of contacts to corrode, work loose, and cause problems.



Rubywand