Re: Multiprocessor 65816???

["Peter Watson" <paw77@N_O_hotmail_S_P_A_M.com>]

> Not particularly useful, since no coprocessor was ever sold.

How did the FPE (Floating Point Engine) card work?

-- 
Peter Watson
-- Write to MSDOS disks on the Apple IIgs?
-- Impossible!  ;-)


"Eric Smith" <eric-no-spam-for-me@brouhaha.com> wrote in message
qhoetuaidz.fsf@ruckus.brouhaha.com">news:qhoetuaidz.fsf@ruckus.brouhaha.com...
> "Bryan Parkoff" <bryan.nospam.parkoff@nospam.com> writes:
> >     I am surprised that there is no virtual memory existence for Apple
IIgs
> > since Abort feature is available.  Do you think that GS/OS can implment
to
> > use Abort feature so visual memory can be enabled?
>
> Proper virtual memory would require an MMU in addition to the abort
> feature.
>
> >     I wonder why COP instruction is never used.  It may be useful for
> > floating.
>
> Not particularly useful, since no coprocessor was ever sold.