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Re: normal Zip 8000 behavior?

rich12345 wrote:

On May 30, 10:53 am, rich12345 <aiiad...@gmail.com> wrote:


It kept on saying ERR in random TEXT garbage, so I changed out
80 column card (meg80z) for RWIII.




with RWIII installed with zip 8000, I can do PR#3, it goes to 80
column

the first try at HGR2 ended up with garbage on the full screen HGR,
wouldn't allow me to HPLOT or call -141, 4000:00 00 00 00 00 00 00 00
to clear the first few bytes

I reset, sticks in garbage TEXT screen ERROR.  I turn off power, then
back on quickly.  Goes
to garbage HGR then garbage text with ERR displayed in text

If I turn off power, wait 20 seconds, power back on, it shows garbage,
then boots.  It will run FlightSim 2.0 perfectly (at least for 1
minute
that I ran it)


I can run all programs on zip utilities disk.  Everything works
(including 80
column display of manuals).  The test reports SKIPPED on items
mentioned
in previous post.


I've used several Zip 8000's in several //e's, and I've never seen
*any* of those symptoms.

And I never power cycle to reset--just ctl-Reset or three-fingered-
salute--and the Zip Chip responds perfectly every time.

I think you are experiencing a problem, perhaps caused by the Zip
Chip interacting with other cards in the machine.  A fully-loaded
bus can cause marginal timing issues to manifest themselves.

-michael

NadaNet 3.1 for Apple II parallel computing!
Home page:  http://home.comcast.net/~mjmahon/

"The wastebasket is our most important design
tool--and it's seriously underused."