Re: Questions on Accelerators and RamWorks III

[mdj <mdj.mdj@gmail.com>]

On Nov 3, 5:42 pm, "Michael J. Mahon" <mjma...@aol.com> wrote:

> > For Ramworks compatibility, you need a Transwarp or newer accelerator.
> > None of them can accelerate more than 1mb of Ramworks memory. The Zip
> > uses a fairly standard tagged RAM cache. The Transwarp uses one of its
> > 64k banks for caching the Ramworks, and I *think* it simply
> > invalidates the cache when a bank switch occurs. Simple enough to
> > determine with a test program if you care enough.
>
> The Zip Chip caches up to 2MB of RamWorks-style memory.

Interesting. I had assumed the 1mb limitation was because RamWorks
style cards have non-linear bank numbers after $0F and that each of
the daughtercards used different ranges. I wonder how they got around
that...

Also, my tag width guess was a bit short ;-)

Matt