Hi, I'm new here but have been a lurker for years. I recently received a nice Apple II Plus that had a few cards (including a Videx Videoterm and MS language card), and I just noticed this logic board's part number is not documented online: 820-0044-00
The only 820-0044-XX revisions I can find info on are: 820-0044-01, 820-0044-C, and 820-0044-D, with the main source being the defacto The Apple II Circuit Description:
RFI-The RFI mother boards are identified by the part number 820-0044-XX.The "XX" is the revision and to date (July 1982) the latest revision is "D." Therehave been previous revisions of "01" and "C." The part number is found near the F1location (left edge of board). The differences between RFI revisions involve locationsand quantities of ferrite beads and other changes intended to further suppress RFIemissions. To date there have been no functional circuit changes between RFI revi-sions. We refer to all RFI mother boards (through revision D) as simply "RFI."
Does anyone have any information on this revision? Check out the pictures to see if I'm missing anything.