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SubjectRe: [OFFTOPIC] IDE maintainer?
On Mon, 12 Oct 1998, Shannon Hendrix wrote:

>
> In message <Pine.LNX.3.96.981011025324.3574A-100000@Astro.Dyer.Vanderbilt.Edu>,
> "Andre M. Hedrick" writes:
>
> > My speciality wrt to IDE was making off-board UDMA cards
> > functional/bootable. Since all SMP PPros and P5 mainboards that I know
> > of are limited to DMA mode 2, I needed direct UDMA support and upgradablity.
> > Thus a need, an action taken.
>
> Not quite. My dual PPro system boots up identifying mode 4 IDE
> drives just fine, and runs them just fine.

DMA mode 2 and PIO 4 are all but identical. The point that was made and
you have verified is that the 440FX and 430HX are hardware limited to
"DMA mode 2 and/or PIO 4".

Since there are no SMP P5 mainboards that I know of that are 430TX based,
nor have I tested (or desired) the use of PPro's on the 440LX using CPU
riser cards that only exist for TYAN 440FX based PII mainboards.

Since I am cheap and so are UDMA-IDE devices (relative to equal speed and
through put SCSI devices), I hunted for quality UDMA add-on PCI cards.

My two SM P6DNF's and Tyan S1563D are limited to "DMA mode 2 and/or PIO 4".
There are to many good SMP PPro/P5 boxes that need an out for the new
IDE-devices. This is also required if you put a UDMA drive on a 430HX
board that does not allow one to restrict the use of UDMA support on
hardware that can not handle it.

> I've removed the IDE drive (it was just temporay space) since my
> system is mostly SCSI.
>
> My motherboard is a Micronics W6-Li with the latest BIOS.
>
> --
> csh - shendrix@widomaker.com - http://www.widomaker.com/~shendrix/myresume.html
> ----------------------------------------------------------------------
> "If you tell the truth, you don't have to remember anything" --
> Mark Twain
>
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>

Cheers,
Andre Hedrick
The IDE-FNG for Linux
The APC UPS Specialist for Linux

http://www.dyer.vanderbilt.edu/server/udma/
http://www.dyer.vanderbilt.edu/server/apcupsd/





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