Re: ZipGS upgrading

[Gregory Ross Thompson <gregt+@CMU.EDU>]

ericm@sage.cc.purdue.edu (Eric Mulholland) writes:
> I would recommend sodering a 14 pin socket on the Zip for the oscilator
> and plugging the oscilator into it.  That way if you wish to change it
> later, no sodering.  You might want to change it if you find your setup
> can't reliably run at its present hig speed, or if you decide to perform
> the extra (more diffucult) step to go above 12mhz.

  I would recommend against soldering in the socket.  Zip had
originally planned on socketing the oscillators, but after doing loads
of testing, they decided against it.  The socket adds another place
for noise to creap into the system.  It may work fine for you, but it
may not...

> My ZipGS uses the 600mil (wide) sram sockets.  I bought 35ns chips and
> haven't experienced any problems with them running at 12mhz.

  Also, it's pretty important that you get low power SRAMS, no matter
what size you get.

> Performance speaking, it is now about imposible to tell which direction
> a window is drawn, it just appears all at once!

  Can't wait until I've got the dough to upgrade my board beyond 9/64...

		-Greg
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