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Newsgroups: comp.sys.apple2
Subject: Re: ASIC Prototype
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From: jmueller@umaxc.weeg.uiowa.edu (Jim Mueller)
Date: 19 Apr 91 03:35:41 GMT
Reply-To: jmueller@umaxc.weeg.uiowa.edu (Jim Mueller)
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References: <51671@apple.Apple.COM> <1991Apr18.190155.5198@m.cs.uiuc.edu> <109618@tut.cis.ohio-state.edu> <1991Apr19.002759.28135@m.cs.uiuc.edu>
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In article <1991Apr19.002759.28135@m.cs.uiuc.edu> bazyar@cs.uiuc.edu (Jawaid Bazyar) writes:
>  FYI, I called Zip and they said that their computer simulations say that
>the Zip card should work up to 20MHz.  They can't say for sure because they've
>never had a processor to test it with. Oh, and get this:  They took a Zip and
>and hopped it up to 14MHz (the whole power supply, etc shebang). Then they
>did all the same mods to a Transwarp and could only get 11MHz out of it.
>Meaning the Zip is a whole lot more robust (nothing I didn't already know)
>
>Jawaid Bazyar 

I recall Bill Heineman stating he tried upgrading his zip chip by changing
crystals, poswer supply, etc, and only get it up to 10 Mhz whereas with
the TWGS he has it running at roughly 13Mhz. Apparently Zip knows something
Bill does not. Personally, I favor the simpler design of the Zip. Wow, 20Mhz...
If only they had a decent size cache now.



--
|Jim Mueller								     |
|Internet: jmueller@umaxc.weeg.uiowa.edu                                     |
|The University of Iowa                            			     |
|"Many truths we cling to...greatly to our own point of view do they depend."|