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Re: Transwarp GS vs. Zip GSX
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In article <aavQ9.110959$E_.59185@news02.bloor.is.net.cable.rogers.com>,
Tim Haynes <timhaynes@alumni.NO.SPAM.PLEASE.uwaterloo.ca> wrote:
>I guess it depends... Zip is better for size and heat (i.e. it runs cooler
>than Transwarp and is smaller, with less chips). However, you can speed up
>the Transwarp if you are so inclined. Can you speed up Zip...? I'm not
>sure...
You can replace the processor, cache, and oscillator on a ZipGS to speed
things up. Mine's been somewhat flaky since I upgraded from 8 MHz and 16K
cache to 12.5 MHz and 64K cache, though...it's been bad enough that I've
removed it and have my GS poking along at 2.8 MHz. (It's maddeningly slow
at running GS/OS apps, but at least it's running fairly reliably now with
both SCSI and LocalTalk enabled.) I think it might be the cheap-ass sockets
(junk-bin parts salvaged from other boards) I used...I've had half a thought
of removing the sockets and soldering the cache and oscillator directly to
the board.
IIRC, I replaced the 74F00 with a 74HCT00 out of the junkbox, and put that
in a socket as well. That's also a candidate for soldering to the board.
(One recommended mod for pushing the ZipGS past 12 MHz is to replace the
74F00 at the bottom of the board with a 74HC00. AFAIK, the only difference
between HC and HCT parts is that the signals on an HCT are TTL-compatible.
That would match the signal levels of the F part it replaced...but what was
the idea behind the 74F00->74HC00 swap? Was it to get faster switching
speeds, or was it to get CMOS-compatible signaling?)
_/_ Scott Alfter
/ v \ salfter@salfter.dyndns.org
(IIGS( http://salfter.dyndns.org Top-posting!
\_^_/ pkill -9 /bin/laden >What is the most annoying thing on Usenet?
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