On Mar 19, 21:54, Manuel Bouyer wrote:
   > Subject: Re: UDMA 100 probelm
   > On Sun, Mar 18, 2001 at 10:12:00PM -0600, Kazushi Marukawa wrote:
   > 
   > Interesting. Could you try to just remove the PDC_IS_265 here:

Thanks.  This change works well.  My drives are working as
UDMA 5 now regarding to boot-time messages, though I have no
way to check the actual speed.

  wd1 at pciide1 channel 0 drive 0: <Maxtor 96147U8>
  wd1: drive supports 16-sector PIO transfers, LBA addressing
  wd1: 58623 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 120060864 sectors
  wd1: 32-bit data port
  wd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
  wd1(pciide1:0:0): using PIO mode 4, Ultra-DMA mode 5 (Ultra/100) (using DMA data transfers)

   > My bios sets PDC2xx_SCR this way but maybe it's not valid everywhere.
   > Linux cheks it but doesn't change it; FreeBSD doesn't do anything
   > special here.

My Ultra 100 cards came with 200b12 BIOS.  I upgraded them
to 201b27 (latest) BIOS.

Regards,
-- Kazushi
"You can do this in a number of ways.  IBM chose to do all of them.
Why do you find that funny?"
		-- D. Taylor, Computer Science 350