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Re: Need S-RAMs for ZipGS!
- Subject: Re: Need S-RAMs for ZipGS!
- From: pubpc1@library.ucla.edu
- Date: 1997/04/30
- Newsgroups: comp.sys.apple2
- Organization: University of California, Los Angeles
- References: <5k5qel$8q2$1@nz12.rz.uni-karlsruhe.de>
Alexander Siegfried wrote:
>Hi there,
>
>is there anyone in the II community who could send me S-RAMs for
>my ZipGS to Germany? I need 4 x 20ns, 4 x 25ns and 4 x 35ns (all
>narrow). It's just that I can't get these speeds here in Germany
>anymore (only 70ns and 15ns / 12 ns, which is too fast). I'll pay
>in cash for the chips.
>
> -- Clue / Ninjaforce
Try JDR Microdevices (http://www.jdr.com/). If I'm not mistaken,
they will ship overseas.
How fast have you gotten the Zip to go with 70ns in DATA and
15ns in TAG? I've seen a board go 12.5MHz with that combination.
Also, if you have stability problems, you can try moving the
cache settings progressively from 64K to 32K to 16K to 8K.
I have 64K installed, but at 13.75MHz, the Zip would not stabilize
until the board was set to 16K (even though 64K were installed).
Since I made comparisons of performance using the MegaDemo, which
showed that performance levels off at 16K of cache, this was ok. :)
-Scott G.