Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!husc6!m2c!wpi!greyelf
From: greyelf@wpi.wpi.edu (Michael J Pender)
Newsgroups: comp.sys.apple2
Subject: Re: Multi-tasking on the IIe
Message-ID: <9760@wpi.wpi.edu>
Date: 18 Mar 90 02:21:23 GMT
References: <6992@hydra.gatech.EDU> <27@aucsv.aukuni.ac.nz>
Reply-To: greyelf@wpi.wpi.edu (Michael J Pender)
Organization: Worcester Polytechnic Institute, Worcester ,MA
Lines: 22

In article <27@aucsv.aukuni.ac.nz> robert-s@aucsv.aukuni.ac.nz (Robert Sheehan ) writes:
>
>Rather than provide true multi-tasking which could be very slow I would like
>to see someone write a Switcher type program for the IIe/IIc with VBL 
>interrupts.
...stuff nuked...
>I realise there are problems: It would require moving large amounts of memory
>around, but the different aux mem banks can be switched between quite easily,
>the text and graphics pages would have to be specially taken care of.

If the Apple STANDARD memory card could be bank switched like this I'd
make Daemon do it overnight...  But that is not a NORMAL card.  
It might be the AE standard, but unless I am REALLY mistaken (I'd
love to be wrong on this one)  Apple slot five ram cards allow 
fast sequential access by autoincrementing, or full random access 
to the different banks.

---
Michael J Pender Jr  Box 1942 c/o W.P.I.   W.O.S. is not dead.
greyelf@wpi.bitnet   100 Institute Rd.     ...its time to get started,
greyelf@wpi.wpi.edu  Worcester, Ma 01609   there is much to be done.
If my next computer isn't a IIgs, it won't be an apple... Me.