Re: 8x ZipChip and DHR: Anyone else having problems?

[supertimer@aol.com (Supertimer)]

phoenyx <quazar@dcnet2000.com> wrote:

>Supertimer wrote:
>
>> I repeat, something else in Jay's system must be tripping
>> up the Zip because I used a Zip 8Mhz while I had my IIe
>> and it worked great with mouse based double hires stuff.
>> In fact, I got the Zip expressly for using GEOS at an
>> acceptable speed.
>>
>> I also used it with Publish-It! and Multiscribe IIe.  GEOS,
>> Publish-It!, and Multiscribe IIe are all mouse based DHR
>> programs.  All worked with the Zip.
>>
>> The Zip uses 8k of cache RAM to run cached and
>> motherboard memory at different speeds.  For a
>> computer that mainly used two 64k banks (128k),
>> that was more than enough.  The Zip is designed to
>> accelerate up to 2MB of RAM in the aux slot,
>> meaning it'll attempt to cache segments in any of
>> those memory banks.  Beyond 2MB, it will not
>> cache data.
>
>Any ideas?, If it was just the mouse or just the video it
>might be easier to track down. It's probably something
>simple like a bad or loose memory chip.

Unfortunately, I am out of ideas.  ;-(  Maybe run the
IIe self test with the Zip installed?  Also, check to
see if there are any cards that use DMA (RamFAST
or Apple High Speed SCSI for example) since the
ZipChip does not support DMA properly.  If that's the
problem, the solution is to turn off DMA.

>Obsbedia2:
>Try the programs without the Zip and make sure they
>work correctly.

Also if you have another Apple IIe or a IIc, try the Zip
Chip in that computer to see if the second computer
can DHR and mouse with the Zip.  Not a IIc Plus or
a 128EX or 128EX/2, though.