From: Al Kossow <aek at bitsavers.org>
I really did find a problem with the non-A version of the 8473. I was using a Seagate
ST-01 and Imagedisk was having problems
recognizing the address mark on Track 0 of System/36 disks that went away when I switched
to the AHA-1522 with a 8473A.
I'll double-check that there really was a problem with S36 disks and non-A
8473's..
C: Is the adapter you used similar to what Dave Dunfield describes on his site?