Hi,

AFAIK the only WD7000 ESDI controller was made for Apollo 
workstations. So eventually Apollo/HP could have such information. 
You could also try to disassemble the Bios;). 

Why do you want this information?

mike 

On 15 Oct 2001, at 11:03, CaptnZilog@aol.com wrote:

> Does anyone out there have any low-level documentation, or can point
> me to some, on the old Western Digital MFM, RLL, ESDI disk
> controllers?  Not jumper settings, etc, I'm looking for more like
> low-level programming info, specifically something that would tell you
> how to low-level format a drive (w/o the BIOS on the board).
> 
> Either that, or docs on the WD chipsets used on these boards.  The
> board I'm specifically interested in is the WD7000 which is an
> ESDI/SCSI combo.  The docs I have give a bunch of info on programming
> the SCSI side, but nothing on the ESDI side.
> 
> ???   -- Pete
>