Xref: utzoo comp.sys.ibm.pc.hardware:2422 comp.sys.ibm.pc.misc:2869 comp.os.msdos.programmer:1586
Path: utzoo!attcan!uunet!cs.utexas.edu!helps!bigtex!james
From: james@bigtex.cactus.org (James Van Artsdalen)
Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.ibm.pc.misc,comp.os.msdos.programmer
Subject: Re: DMA channel asignments
Keywords: DMA
Message-ID: <48847@bigtex.cactus.org>
Date: 21 Oct 90 18:50:28 GMT
References: <200@kumr.UUCP> <11055@hubcap.clemson.edu>
Reply-To: james@bigtex.cactus.org (James Van Artsdalen)
Followup-To: comp.sys.ibm.pc.hardware
Organization: Institute of Applied Cosmology, Austin TX
Lines: 10

In <11055@hubcap.clemson.edu>, lsalomo@omni.UUCP (Lawrence W Salomon) wrote:

> If I recall, there are three DMA channels on the chip (and if you
> have an AT, then I think you can two chips).  Channel 2, I believe, is
> used for memory refresh, since the PC uses dynamic RAM;

DMA 2 is the floppy drive.  Refresh doesn't use DMA any more.
-- 
James R. Van Artsdalen          james@bigtex.cactus.org   "Live Free or Die"
Dell Computer Co    9505 Arboretum Blvd Austin TX 78759         512-338-8789