Re: 20MHz 65C816 (IIGS CPU) in production: used in C= accelerator

[jcompton@typhoon.xnet.com (Jason Compton)]

pubpc1@library.ucla.edu wrote:

: But this is of special interest to us for another reason.  This company
: is using the 65C816 CPU, the same one used in the Apple IIGS, as the
: processor for the board.  There will be two models: one with a 10MHz
: part, and the other with a 20MHz CPU.  Both will come with 64K of fast
: static RAM...which for the C64, unlike the IIgs, is not a cache (the C64
: has but 64K of memory).

The SuperCPU's internal RAM actually is a mirror of the internal 64 RAM,
since it needs to be local to the CPU.  (Trying to put the internal RAM at
20mhz wasn't going to happen.)  A 1-meg RAM card is in the works.

The 10mhz version has been cancelled because the preorders for the 20mhz
far outweighed it.  In retrospect, that's almost too bad, because for
games at least 20mhz tends to be entirely TOO fast.

: This was taken out of a 1995 issue of an Amiga magazine.  I wonder if
: the 20MHz 65C816 used in this Commodore accelerator would function in
: an Apple GS?

Hmmm.  I don't know, but what magazine was that? :)

If you ARE still interested, you'd do well to contact CMD at their current
e-mail address, cmd.support@the-spa.com.

And yes, CMD is shipping the 64 version of this product and it does work.

-- 
Jason Compton                                  jcompton@xnet.com
Editor-in-Chief, Amiga Report Magazine         (847) 741-0689 FAX
AR on Aminet - docs/mags/ar???.lha             WWW - http://www.cucug.org/ar/
'I said, "You wouldn't understand."            Take what's yours, be damned.'