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SubjectRe: UDMA and VIA APOLLO CHIPSET
On Sat, 3 Jul 1999, Sid Boyce wrote:

> 00:00.0 Host bridge: VIA Technologies, Inc. VT82C597 [Apollo VP3] (rev
> 04)
> 00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3 AGP]
> 00:07.0 ISA bridge: VIA Technologies, Inc. VT82C586 ISA [Apollo VP] (rev
> 41)
> 00:07.1 IDE interface: VIA Technologies, Inc. VT82C586 IDE [Apollo] (rev
> 06)
> 00:09.0 SCSI storage controller: Adaptec AIC-7871 (rev 03)
> 01:00.0 VGA compatible controller: Intel Corporation i740 (rev 21)

I have this EXACT chipset down to the revisions on an FIC VIA 503+.
It works perfectly.

> hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
> hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
> hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
> hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
> hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
> hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
> hda: DMA disabled
> ide0: reset: success

Go shorten your cable.
I will bet that it is between 19" and 23" long.
18" is the limit end to end, including the wrap over.
17.5" is allows safe.

If lenght is a problem..........a 24" ATA-66 (80c) ribbon will do ATA-33
cleanly.........imperical tests only proof. This is not documented
anywhere that I know about. I did this as funny test, and it worked.

Andre Hedrick
The Linux IDE guy



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