Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uwm.edu!psuvax1!husc6!m2c!wpi!greyelf
From: greyelf@wpi.wpi.edu (Michael J Pender)
Newsgroups: comp.sys.apple
Subject: Re: The Apple IIf
Message-ID: <9227@wpi.wpi.edu>
Date: 28 Feb 90 04:01:38 GMT
References: <10892.net.apple@pro-lep> <1990Feb27.032627.16301@spectre.ccsf.caltech.edu>
Reply-To: greyelf@wpi.wpi.edu (Michael J Pender)
Organization: Worcester Polytechnic Institute, Worcester ,MA
Lines: 18

In article <1990Feb27.032627.16301@spectre.ccsf.caltech.edu> toddpw@tybalt.caltech.edu (Todd P. Whitesel) writes:
>The resulting disk would be as fast as your GS ramdisk, and if DMA was used
>(why doesn't anyone make a DMA based standard slot RAMdisk using slow SIMMs
>or something? it's not hard and it's real cheap.) then you could get around
>a Megabyte per second which is fast enough to make the system loader the
>bottleneck and not the smartport driver.

Does the IIgs include/support any DMA controllers at this point?
If not, why?  If so, for what operations?  Memory to memory still
takes seven clock cycles, it could be reduced to two.

How about making a floating point coprocessor a standard part of the
package?  Does the FPE require a visible slot?

---
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.