Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uunet!aplcen!haven!adm!smoke!gwyn
From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.sys.apple
Subject: Re: The Apple IIf
Message-ID: <12249@smoke.BRL.MIL>
Date: 28 Feb 90 06:00:36 GMT
References: <10892.net.apple@pro-lep> <1990Feb27.032627.16301@spectre.ccsf.caltech.edu> <9227@wpi.wpi.edu>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 15

In article <9227@wpi.wpi.edu> greyelf@wpi.wpi.edu (Michael J Pender) writes:
>Does the IIgs include/support any DMA controllers at this point?

Yes, DMA support has always been part of the Apple II bus design.
One of the video digitizers used it, for example, as have some disk
controller interfaces.  (Nothing sold by Apple though, so far as I know.)

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

While the iS FPE does require a peripheral-bus slot, a built-in FPP
could presumably take advantage of the COP instruction of the CPU to
"escape" out to the FPP or to trap to a floating-point emulator on
systems with no FPP installed.  Unfortunately this might require
changes to the ORCA desktop debugging environment, which uses COP.