ZipGS/Ramfast problems finally solved!!!!

[dmds@msg.ti.com (David de Sosa)]

I'd like to pass on the following information to anyone having problems with
their ZipGS cards.
 
I finally came up with an acceptable fix that solved everything after more 
than a year of frustration with my ZipGS and Ramfast cards.  Thanks to Nathan 
Mates and Ron Pedelty for their useful information.  By setting the dip 
switches to only use 8K of cache on the Zip card, everything works great!  The 
Zip card originally came with 32K of cache but it doesn't work in 16-bit mode 
(GS/OS booted) unless only 8K of cache is on.  The system will always crash 
during boot up in the 16K or 32K setting.

Even though I'm probably suffering some speed penalty by using 8K instead of 
32K cache, I'm just relieved to have any acceleration at all.  

Now I'm curious as to why only the 8K setting works.  There are two 16K chips
onboard so how is it possible that only 1/2 of one of the chips work?  Would
it be worth swapping the original chips out with faster ones?  Or is there 
some component on the board which is the likely culprit that I could replace?

Also, just how much speed am I losing with 8K instead of 32K on?


David