My post, my bump....
Well it is finally complete and fully working!
I would no longer call this a clone as it is a fully reworked PCB layout of the "version 2" schematics
supporting all three Fluke meters in this series. (8840A/8840AF & 8842A). Lets call it a replica.
Sourcing all of the parts has been a rather big challenge with some risks, but it is amazing that
after more than 40 years I could still find, if not 100% OEM parts, 99% identical ones.
I am in the process of automating some HPIB programming test to insure that there are no glitches,
but so far I am pleased to say that the 488 bus cannot tell the difference between the red card and the
green card!