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Re: Zip GSX not running with 64k cache



On 03/26/2012 10:59 AM, Leandro M Polimeno wrote:
Brian,

Hi ... where/when you get the 14MHz CPU ?!?

They can be ordered directly from Western Design Center. I picked up a couple several years ago for this exact application. Unfortunately, my GSX won't even run reliably at 12.5Mhz. :-(




Brian escreveu:
I have a Zip GSX card with the following components: 64Mhz crystal,
74LSO logic chip, 14Mhz CPU, and 32k cache memory (using two 6" RAM
chips and two 3" ones). It works fine, but I want to upgrade it to
64k cache. But when I upgraded the cache to 64k (and adjusted the
dips accordingly) the system doesn't turn on, just makes some beep
noises). When I downgrade back to 32k it works fine. What do I need
to do to get it running at 64k?