Re: UDMA and VIA APOLLO CHIPSET

Andre M. Hedrick (hedrick@Astro.Dyer.Vanderbilt.Edu)
Fri, 2 Jul 1999 23:19:34 -0500 (CDT)


On Fri, 2 Jul 1999, Juan Casero wrote:

> Hi -
>
> I know you guys are busy with 2.3.x development but I was wondering if there
> was the possibility that UDMA mode may be supported on a VIA Apollo chipset
> motherboard like the TYAN 100AT in the 2.2.x kernels? I currently use the
> 2.2.10 kernel on such a system with an AMD K6-II and UDMA does not work under
> Linux in spite of the fact that the BIOS recognizes the drives as UDMA
> hardware. Any help is much appreciated since right now these drives are giving
> me no more than 5 Mb/sect transfer rates.

Did you set your compile option at the code maturity to Y for the
experimental stuff?

That speed looks like DMA mode 2 works by default.

The BIOS could tell you that your hard disk is a block of cheese.
You would then know that something is wrong, but I am surprized that TYAN
may have blown their BIOS with a new Trinity release.

Andre Hedrick
The Linux IDE guy

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