Re: ZIPGS 2-pin Crystal

[Wayne Stewart <waynes@intergate.ca>]

Andrew Webber wrote:
 
> Thanks for that. I actually have 2 ZIPGS so I decided to physically
> take out the other bank of 32K to use in my 2nd card (only the first
> two slots are filled). When I take the 2nd bank the card is not stable
> at all and will not even boot GS/OS. So putting 64K cache in and
> setting to 32K makes the system stable. Any ideas why that is the
> case?

The main theory revolved around the second bank being a lot further 
from the processor than the first bank and with those skinny leads.

The cheap sockets Zip used didn't help either. I originally did my 
upgrading by soldering a half socket in the middle of the original 
socket. Later I started wondering about the contact so I removed the 
half sockets and replaced them with machined pin sockets. The two
ZipGS I tried it on were previously stable at 14.5 mhz but not 15.
After I was able to run them at 15mhz. Not spectacular but maybe 
indicative of something.

	Wayne