Re: Accelerators

[yeo@pigeon.qut.edu.au (Willie Yeo)]

pubpc1@library.ucla.edu wrote:

: In fact, the Zip GS is easily upgradable to high speeds.  I
: just made an illustrated "how to" stack on doing this and it
: is in the ground upload folder (it may be moved to the May
: subdirectory soon).

	I am not gonna correct Scott's error on the MHz thingy. To 
oscillator speed divided by 4 = GS speed. i.e. 36MHz crystal = 9MHz.

	I was lucky when I bought a 7MHz ZipGSX with 32k Cache, I bought 
an inexpensive oscillator and pumped it to 9MHz. I'd suggest, if you buy a 
7MHz/8k Cache version and wanting to attempt to try your luck, you might 
be able to get a stable 9MHz speed. If you do get a success, you should 
consider addind more cache.

	Anything further, i.e. 10MHz is less likely you would be able to 
get it. And above that, is a modification that will void your warranty. I 
HAD one of those, which I was persuaded to part with it ... runs at 
12.5MHz at 64k cache. It is about 80% stable running ...

	I still have another 9MHz one |8) Which I am *seriously* consider 
parting as Henrik Gudat polishes the Bernie ][ the Rescue. But then again, 
it has GREAT sentimental value that I wish to retain |8)

==========================================================================
Willie Yeo				|  Apple Technology at Work !!!!!!
					|
Teaching and Learning Support Services	|  PowerMac 7200/75 DOS Compatible
Queensland University of Technology	|  PowerBook 520  <-->  Newton 110
Brisbane, AUSTRALIA			|  LaserWriter Plus - ColorSW 1500

	        http://www.tals.dis.qut.edu.au/staff/willie