Re: Zip GSX not running with 64k cache

[Brian <bpicchi@gmail.com>]

On Mar 24, 3:13 pm, David Chiu <n...@nowhere.org> wrote:
> On 3/23/2012 9:27 AM, Brian wrote:
>
> > 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?
>
> Err, you're clocking the card with 64MHz xtal? Isn't that like... 16MHz?

Yes, 16Mhz at 32k cache which performs at about the same speed as a
card with 10Mhz and 64k cache.  I thought by updating the CPU and
logic chips it could handle this, no?  Oh well.