Re: fastest GS accelerator?

[toddpw@cco.caltech.edu (Todd P. Whitesel)]

schultp@pd-dom (Paul Schultz) writes:

>Well, I just upgraded my ZipGS (v 1.02) and I can't get it
>to operate at over 12 MHz (as I expected from discussions here).
>In fact, I am running it at 11.5 MHz since once in a blue moon
>12 MHz would make the machine "hiccup" :-)

That sounds more like a CPU+RAM caused limit rather than the gate array
itself. The figure I am used to hearing is 12.4 mhz, and it _can_ be gotten
around, although zip (understandably) changes an arm and a leg for the fix.
Since you can get 14mhz rated chips from WDC (they buy them in large lots
from Sanyo), figuring out the correct board modification is the tough part.

To beat F series you'd need something with a C in it, but which of HC, HCT,
AC, or ACT, I'm not sure. I'll find some data books and look it up.

Todd Whitesel
toddpw @ cco.caltech.edu