Found these inside a non-working 71B

[rprosperi]

(03-11-2018 08:27 PM)Paul Berger (Canada) Wrote:  It appears to have all the connections it needs there are 3 pins next to +5 that are of no use to a RAM or ROM module they are there because these modules are designed to be put into front side plugins The fourth missing connection is Dout which is not brought back to the board because it goes on to connect to the other added RAM and ROM modules.

Thanks for 'splaining that. I've never opened a Forth module, but I always assumed it contains 2 separate boards, one for each ROM, but that could simply be naïve. Assuming that, I was trying to figure out why that one board (which looks like it is mounted under the labeled Forth ROM) would be different from all the other RAM/ROM boards. Anyhow, hopefully we'll soon know. Thx.