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- Newsgroups: comp.sys.apple2
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!menudo.uh.edu!lobster!nuchat!xcluud!gtolar
- From: gtolar@xcluud.sccsi.com (Glynne Tolar)
- Subject: Re: Fast Zips
- Message-ID: <Bs4wrt.5x3@xcluud.sccsi.com>
- Organization: Greater Montrose UFO Appreciation Society & Data Haven
- References: <1992Jul27.210031.20138@micor.ocunix.on.ca>
- Date: Wed, 29 Jul 1992 05:04:40 GMT
- Lines: 38
-
- In article <1992Jul27.210031.20138@micor.ocunix.on.ca> toh@micor.ocunix.on.ca (Marc Sira) writes:
- >Ok, I just got off the phone with Zip...I was interested in knowing whether
- >one could obtain just the ASIC upgrade, and install the 14MHz 65816, the
- >crystal, and the faster SRAM oneself. This was in line with the suggestion
- >someone made here that the gate array was bottlenecked at 12.4MHz or so.
- >The word from the person I talked to:
- >
- >"The gate array is the fastest thing on that board."
- >
- >In other words, she says that there is no bottleneck, and no ASIC upgrade
- >is needed. The gate array can go to 19MHz or so. The main problem, she says,
- >is getting 15ns SRAM in a wide package (I didn't broach the question of why,
- >if 15ns is needed for 14MHz, they ship 9MHz Zips with 70ns RAM).
- >
- >Of course, she wasn't big on the idea of user upgrades in general, but I
- >did get her to begrudgingly admit that it was possible (but will certainly
- >void your 1 year warranty).
- >
-
- OK, this is my plan of attack. I plan to buy 15nS SRAM from Microprocessors
- Unlimited ($20 a chip x 4 $80 plus s&h) and some sockets for the narrow chips
- (using 14 pin machine pin gold plated stacked end to end to make 28 pin).
- I could not find 28 pin sockets that are .3 in wide (300mil.). After
- installing them and testing it then I'll get the new cpu and oscilator.
-
- Any questions?
-
- >
- >--
- >Marc Sira |
- >toh@micor.ocunix.on.ca | "Your god drinks...P-P-Peach nectar!"
- > '
-
-
- --
- -----
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