Sounds about right.



Thanks for reminding me about those! I'll add the sockets to the bill of materials. Yes, all ICs are socketed.



It's 2-layer.



Yes. Check the schematic and look at the "MCU & Latch" page. Specifically, this page of the schematic. All ports are exposed on headers as is the latched low-byte address of the address bus, as are PSEN, RD, WR (duplicated since P3 is also exposed on its own block), as well as two "OTHER" memory-mapped enable pins from the '138 for possible expansion with user devices in the address space.



Because on the SBC I had/have to choose a specific supervisor. And while that supervisor may be readily available in the United States, that specific supervisor may not be as easy to find in other parts of the world. By making the RC reset available, the SBC design can still be built even if the specific supervisor I chose for the design cannot be found locally in other parts of the world.



Thanks. I've received some emails, too, so I'll keep you posted. At the very least it seems that bare PCBs would be easy enough to provide early than the beginning of September. I wasn't going to place an order for more PCBs until I was ready to actually build the things, but if there is interest in bare PCBs I can certainly place an order earlier and ship that to those who want them.

I'll keep everyone posted here in the forum.

Regards,
Craig Steiner