From: Baldwin_James at domain emc.com
Date: Fri 22 Jun 2001 - 10:51:52 IST
Darragh, yer right :)
The cable is 80-Way, not 80-Pin...the extra 40 wires are grounded to -5V pin
improve signal attenuation and create a magnetic shield from interference
between each 'active' wire.
But, don't bother buying a 40-Way cable as the 80-way are
backward-compatible.
You dont need to make any changes in your BIOS, as the chipset will negoiate
the proper DMA speed-setting, just make sure U/DMA 33 is set on in your BIOS
and not PIO Mode/4. All ATA-66/ATA-100 drives are backward compatible to
DMA/33.
CS is Cable Select, if the HD is the only IDE device on that cable, then it
will default to master..in any case, if it is on the primary IDE channel and
is the only HD on that cable, it will be detected as /dev/hda for linux
James.
-----Original Message-----
From: lbedford at domain lbedford.org [mailto:lbedford at domain lbedford.org]
Sent: Thursday, June 21, 2001 10:50 PM
To: ilug at domain linux.ie
Subject: Re: [ILUG] Ultra DMA
On Thu, Jun 21, 2001 at 10:06:15PM +0100, Darragh Rogan came forth with:
> Hi,
>
> You're right - tis a 440BX Intel Motherboard - ultra dma 33 - is that 33
meg
> a second? I'm currently looking at getting a new hd in eager anticipation
of
> dsl, and I don't think the maxtor 30 gigi yke on dabs is capable of much
> more than that!
>
> Where do I get the 80 pin cable - read up on maxtors site last night - the
> extra 40 are grounding or something.
>
any hardware shop will sell them.. I've seen them in ITDirect for definite..
you don't need it for UDMA 33 though, only for 66+
> Also, where do I change the setting for ultra dma - I know that I've to
set
> the HDs to CS, but do I have to play with BIOS?
The BIOS probably sets it up okay, you can run hdparm with the arguments
Kate
gave to make it happier...
L.
-- Liam Bedford | Four thousand holes in Blackburn, Lancashire Software Engineer | And though the holes were rather small WBT Systems, Block 2, | They had to count them all Harcourt Centre, Harcourt St. | Now they know how many holes it takes to fill 01-4170100 | The Albert Hall -- Irish Linux Users' Group: ilug at domain linux.ie http://www.linux.ie/mailman/listinfo/ilug for (un)subscription information. List maintainer: listmaster at domain linux.ie
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