So I picked up this 810 drive on ebay mainly because it was cheap and because it had 2 switches on it that I suspected might be a Happy or Archiver. While I know 1050's pretty well, I really don't have much experience with 810 drives. I took it apart and found the upgrades/mods shown below. The 810 side board has two chips that are completely epoxied over and a switch on the rear of the board that goes from R118 to R117 (Not the best pic, I know). The data seperator daughter board has epoxy on several of the chips which must have had super glue put on top because they were stuck to the shield. There are no added wires to the daughterboard which also has a © 1982 label from SSM Inc. The shield has a label which says "your personal code is 1109" and it was also epoxied shut on the tabs. Finally, there is a switch which goes to a potentiometer and then across R103 on the motherboard (which I believe would probably be some other type of mod, maybe for drive speed). Anyway, here's the pics. Any help would be appreciated.
Thanks,
John