bogo-howto: ATA-100 drives on the Asus A7A266

bogo-howto: ATA-100 drives on the Asus A7A266

[Bobby D. Bryant]

People are using the archive and discovering my earlier question about
getting my ATA-100 drive to work on  the Asus A7A266, and are now
writing to see whether I ever got a solution.

I did, and since I have had a number of enquiries I decided to excerpt
the correspondence as a pseudo-howto.  I am posting this message in
hopes that others may find the information useful.

The information is at
http://www.cs.utexas.edu/users/bdbryant/howtos/hardware/asus-a7a266/DMA_for_ATA-100/

Good luck with it, and holler if you have better suggestions.

Bobby Bryant
Austin, Texas

Re: bogo-howto: ATA-100 drives on the Asus A7A266

[Eyal Lebedinsky]

"Bobby D. Bryant" wrote:
> 
> People are using the archive and discovering my earlier question about
> getting my ATA-100 drive to work on  the Asus A7A266, and are now

FYI, you may want to add this table to your summary.

The IDE modes are
	PIO 		0-4
	Single word DMA	0-2
	Multi word DMA	0-2
	Ultra DMA	0-7

This configures the disk - not the chipset.
	-X00	restore default PIO
	-X01	diasble IORDY

PIO=mode + 8		Programmed IO
	-X08	PIO 0
	-X09	PIO 1
	-X10	PIO 2
	-X11	PIO 3
	-X12	PIO 4

SDMA=mode + 16		Single-word DMA
	-X16	SDMA 0
	-X17	SDMA 1
	-X18	SDMA 2

MDMA=mode + 32		Muti-word DMA
	-X32	MDMA 0
	-X33	MDMA 1
	-X34	MDMA 2

UDMA=mode + 64		Ultra DMA
	-X64	UDMA 0 (ATA 16)
	-X65	UDMA 1 (ATA 25)
	-X66	UDMA 2 (ATA 33)
	-X67	UDMA 3 (ATA 44)
	-X68	UDMA 4 (ATA 66)
	-X69	UDMA 5 (ATA 100)

--
Eyal Lebedinsky (eyal@eyal.emu.id.au) <http://samba.anu.edu.au/eyal/>