On Mon, Nov 14, 2016 at 6:57 AM, Al Kossow <aek at bitsavers.org> wrote:
I just started cataloging and dumping firmware my
SASI/SCSI disk and tape
boards
starting with Xebec. It would be nice to find images for the two alternate
fw
proms for the S1410A, particularly the 8k 104793 version so I can compare
it to
the one used on the S1420
Although they're not SASI or SCSI, while you're collecting such things, it
might also be nice to collect firmware from WD1000-nn and WD1001-nn
(numeric suffix) disk controllers with the 50-pin general-purpose host
interface, and which use the 8X300 or 8X305 processor with bipolar PROMs.
Some OEMs did use the WD 8X300/305 design with customized host interfacing,
including Radio Shack and Fortune.
The later WD100n-xx[n] (alphanumeric suffix) controllers for IBM PC and AT
buses use the WD1010 or WD2010 controller chips rather than an 8x300/305
processor, so they don't really have the same kind of firmware to be dumped
as the earlier controllers. Some of them do use a mask-programmed 8052,
numbered WD1017.