Ancient disk controllers

From: Eric Smith <eric_at_brouhaha.com>
Date: Mon Apr 19 00:46:31 1999

> The WD1001-05 looks pretty similar to the other varients described in the
> databook I have (-55, -85 IIRC). What was the original one like?

The functional differences were that the -05 versions were physically
smaller (5.75 x 8 inches) and didn't support the 8-inch drives. Someone
else pointed out that the WD1000-05 uses the WD1010 integrated controller
rather than the 8X300 and the WD1100 chip set. Since the main difference
between the WD1000 and WD1001 is that the latter supports ECC, I would guess
that the WD1001-5 must use a WD2010 controller.

The host interface was virtually identical whether the 8X300 or the WD1010
was used.

The register set and commands used by current ATA (IDE) disk
drives evolved from the WD1000.
Received on Mon Apr 19 1999 - 00:46:31 BST