Found these inside a non-working 71B

[MikeSD]

If I said that, I must have been tired. I think the only place I used 10 is that the U9-9 is routed to the Math ROM-8 and also to pin 10 on U9, for some reason.

I noticed there is a Forth Assembler part number for "with and without" a debugger. My part number is for the with debugger. Wonder how I verify that? Is the debugger a hardware item, or another ROM, or part of the Assembler?

Thinking out of the box
* I have a ton of 4K RAM boards, from salvaged 71Bs.
* And I have 4 unused front ports.
* And, I bet I could wire in some special connectors deep in those ports, to allow a kludged 8K RAM, made of 4K,
* to be inserted in and plugged into a special connector THAT wouldn't interfere with a standard plugin, if the RAM was removed.

Think that's possible? Can 8K RAMS be made, or do only 4K, 32K and 64K work as a group.

OR, I could put as many together as I could, that might fit in the Card Reader Port. Would like to find a good use for the 4K RAMs.