[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: TWGS



I wonder if you could stick a whole  meg  or more on the cache card (attach
a ribbon cable) so you could speed the GS up even more?



Supertimer wrote:

> CBS <jsmith66@hotmail.com> wrote:
>
> >I've read here that the GAL's are hard to copy.  Why is this?  Besides
> >the obvious reason of copyright (held by a now bankrupt, long gone
> >company), what is stopping Apple II'ers from copying the fastest GAL
> >chips?
>
> Or upgrading the ROM!  The ROM contains the programming
> for the cache size.  Unlike the ZipGS, which all logic is locked
> into a soldered ASIC, the TWGS is designed to be a more
> open system.
>
> The original ROM supported 8k of cache.  Later ones
> supported 32k.  64k and beyond is possible with higher density
> cache RAM chips and new ROM programming.