(well I STILL can't make the "quote" reply feature work in this forum - crazy!!)
Anyway, about the board, I'm sure they're all in landfill somewhere in Marin County, where Broderbund was located. I don't remember how many they made, maybe 6 to 10? Anyway, just imagine the PCB of a standard cartridge, but on the top the board grows out to maybe 14" wide and 10" high (35x25 cm). Lots of 2102 memory chips, enough to hold all the possible transitions in a single track - I just did a really rough calculation now and I come up with maybe 60 2102 memory chips, assuming 18 sectors * 200 total bytes/sector * 8 bits/byte * 2 transitions/bit.
Edited by MikeSilva, Mon May 2, 2016 5:20 PM.