Re: Mobo dying hard with DMA support

From: James Sutherland (
Date: Sun Jun 04 2000 - 08:00:12 EST

On Sun, 4 Jun 2000, Dan Hollis wrote:

> On Sun, 4 Jun 2000, Andrew Morton wrote:
> > Dan Hollis wrote:
> > > HPT366 on BP6 is horribly broken, forget this controller as if it never
> > > existed. Get a cheap PDC20262 and use it instead.
> > Cheery little counterpoint: my HPT366/BP6 consistently gets ~20
> > Mbytes/sec using UDMA66 and has done so with rock-solidity for every
> > kernel between 2.3.4x and present (although I missed test1-ac6).
> > The 2.2 patches work nicely as well. I use the -QQ beta BIOS.
> SMP? And which drives on the HPT366? Manufacturer and model #...
> If you want some real fun, put some CDROM/CDRW on the HPT366 channels and
> then try to enable DMA (UDMA or regular DMA), instant lockup... no fun at
> all...

I just have a single Fujitsu HDD on it. It works fine with the generic
driver, but fscks the other hardware (to the point the BIOS can't start
after a powerup) when I enable normal DMA. Meanwhile, data is dribbling
around at 1.99 Mb/sec...


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