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From: enchant@oliveb.UUCP (Dan Crocker)
Newsgroups: comp.sys.ibm.pc
Subject: Re: programed io to disk controller
Message-ID: <3700@oliveb.UUCP>
Date: Sat, 22-Aug-87 15:21:45 EDT
Article-I.D.: oliveb.3700
Posted: Sat Aug 22 15:21:45 1987
Date-Received: Sun, 23-Aug-87 13:23:23 EDT
References: <363@io.UUCP>
Distribution: na
Organization: Olivetti ATC; Cupertino, Ca
Lines: 18
Summary: AT or XT

In article <363@io.UUCP>, ebr@io.UUCP (Evan B. Ross) writes:
> 
> 	Does anybody know if it is possible to read data from the
> 	hard disk controller using programmed IO rather than using
> 	the dma controller?
> -- 

Are you talking about an AT or an XT (the AT uses programmed I/O already).
I think the XT controller can be accessed using programmed I/O.  The controller
can be set up to use DMA channel 3 or IRQ5.  You might have to poll some
register on the controller to use it in PIO mode.  That's all I know.

				dan
-- 
Here comes the supernatural anesthetist
If he wants you to snuff it
All he has to do is puff it
He's such a fine dancer