The Mod-80 is an Intel 8080 based computer similar to the famous Altair 8800 and IMSAI 8080 (of War Games fame). The Mod80 is essentially a Mod8 (using an 8008 microprocessor) system with the Mod8-1 board swapped out for an 8080 based board (the Mod80-1). The Mod8 dates back to 1974, however the Mod80 card is from around 1977. The Mod8 predates both the Apple I and the Commodore PET by a few years. In fact the Mod 8 was known to Steve Wozniack, and likely influenced his design of the Apple I.
Like the Altair and the ISMAI, this computer didn’t connect to a monitor or keyboard. It was designed to hook up to a teletype machine (the ASR-33). Unlike the Altair and ISMAI, this machine did not require the user to enter a bootstrap via toggle switches on the front panel. It has it’s boot loader (and OS) contained in a series of 1702A EPROMs.
It should be quite the challenge to get this beast working, but it will be fun! And, no doubt, I will learn a lot!