Path: utzoo!mnetor!tmsoft!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!uunet!jarthur!petunia!news
From: rbannon@batman.elee.CalPoly.EDU (Roy Bannon)
Newsgroups: comp.sys.apple2
Subject: Re: Multitasking on a II
Summary: 65186 abort, possible mmu
Message-ID: <276e74a4.7324@petunia.CalPoly.EDU>
Date: 18 Dec 90 19:57:24 GMT
References: <11379.apple.net@pro-angmar> <10663@ucrmath.ucr.edu>
Reply-To: rbannon@batman.elee.CalPoly.EDU (Roy Bannon)
Organization: Electronic and Electrical Engineering, Cal Poly San Luis Obispo
Lines: 31


In article <10663@ucrmath.ucr.edu> rhyde@koufax.ucr.edu (randy hyde) writes:
>
>I think that, due to the interest in multitasking on the GS,
>we should discuss exactly what the 65816 needs to support a
>decent multiprogramming or multitasking system.  Such a
>discussion would be considerably more positive than the
>bickering that's going on now.  Such a discussion wouldn't
>be without merit.  WDC is currently working on the new
>generation 65xxx chips and welcomes input from various users.
>I can post their address sometime (when I'm home on my Mac
>rather than here at school).  If anyone is interested, I can
>post an article (quite long) I once wrote on a "dream machine"
>upgrade to the 65816.
>*** Randy Hyde

Here Here!  Lets get a positive discussion going.  

I am pretty much finished with my DSP card project.  After hacking 
a DSP card which is able to sample at 47k and has a processor on board
that is doing 8 Mips, I'm ready for another hardware project.  I think 
a mmu hack would be perfect.  I am game for a try anyway.  So, what does
it need, form the software point of view that is.  I remember hearing 
something to the effect that the abort line to the wdc65c816 doesnt work
reliablely.  Is this true?  Might make things a bit more complicated if it
is true.  Initial thought, how bout a daughter board that plugs into the
65816 socket and has the 65816 and an mmu on it.  Something to think about
anyway.  

Roy Bannon
rbannon@batman.elee.calpoly.edu