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From: grog@lemis.de (Greg Lehey)
Organisation: LEMIS, Schellnhausen 2, 36325 Feldatal, Germany
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Message-Id: <199605310951.LAA25829@allegro.lemis.de>
Subject: Re: IDE  CD_ROM Problem
To: babel@cais.cais.com
Date: Fri, 31 May 1996 11:51:34 +0200 (MET DST)
Cc: questions@FreeBSD.org, babel@cais.com
In-Reply-To: <199605302358.TAA13543@cais.cais.com> from "babel@cais.cais.com" at May 30, 96 07:58:54 pm
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babel@cais.cais.com writes:
>
> I will try to keep this short .. .

Don't make it shorter than necessary.

> Have problem getting IDE CDROM to work. Rebuilt kernel with options ATAPI,
> device wcd0 and controller wdc1 uncommented.
>
> Boot Hardware scroll says:
>
> wdc1 unit0 (ATAPI): <NEC CD-ROM Drive:273 4.21 > removable, io rdy
> ATAPI1.0 no cmd drq
>
> Can not cd /dev; ./MAKEDEV wcd0
> Do : ls *wcd0*
> get: rwcd0c wcd0c
> but no wcd0

I don't really understand this.  It's a whole lot better to give the
exact output.  For example:

# cd /dev
# ./MAKEDEV wcd0
(All sorts of fireworks here)

In any case, MAKEDEV is only a script that creates device nodes.  It
will work the same whether you actually have the device connected or
not.

> It appears to almost work but lacks a direct memory access channel no.
> How can I supply this?

I don't think ATAPI uses DMA.  Does anybody else out there know?

> MAKEDEV wcd0 may not work due to lack of drq (dma?) problem?

No.  As I said, MAKEDEV has nothing to do with the real hardware.

Greg