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Date:      Thu, 25 Jul 2002 18:41:25 -0400 (EDT)
From:      Fuzzy <fuzzy@pooh.ASARian.org>
To:        sjr@comcast.net
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: CD-RW problem
Message-ID:  <Pine.BSF.4.44.0207251835330.84671-100000@pooh.ASARian.org>
In-Reply-To: <200207251247.g6PCl8rq054754@pcp325887pcs.catonv01.md.comcast.net>

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On Thu, 25 Jul 2002 sjr@comcast.net wrote:

> I'm sure that I'm just missing something simple......
>
> I've added a Samsung SW-240 CD-R/W to my 4.6-STABLE system at
> ata0-slave. The drive is recognized under Windows98 and seems
> to work fine. It claims to have an EIDE/ATAPI interface.
>
> When I boot, I get no messages from this drive, but it seems to
> know that it is there:
>
> 	...
> 	atapci0: <VIA 82C596 ATA66 controller> port 0xd000-0xd00f
>		at device 7.1 on pci0
> 	ata0: at 0x1f0 irq 14 on atapci0
> 	ata1: at 0x170 irq 15 on atapci0
> 	...
> 	ad0: DMA limited to UDMA33, non-ATA66 cable or device
> 	ad0: 29188MB <ST330630A> [59303/16/63] at ata0-master UDMA33
> 	acd0: DVD-ROM <SAMSUNG DVD-ROM SD-612> at ata1-master PIO4
> 	afd0: 239MB <IOMEGA ZIP 250 ATAPI> [239/64/32] at ata1-slave PIO3
> 	...
>
> Previously, ad0 was running at UDMA66.

My experience was that when I had a ATA100 device on ATA0 master
and a PIO4 CDRW device on ATA0 slave the best the system could do
was ATA33. moving the cdrw to ATA1 master allowed the ATA0 master
ATA100 device to be recognised as ATA100. This is with the 80wire
ATA100 data cable.

So yes, I'd say its at least seeing there is something there,
as its reduced the UDMA66 to UDMA33 on ata0.

Fuz



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