G80-USB v1.0 SBC
The G80-USB Micro SBC. The second iteration of the G80 Computer family, this computer made a change to it's communication by allowing for RS-232 or USB Serial interfaces to communicate with the computer.
The source code for the firmware can be found here: https://github.com/jdgabbard/z80-G-DOS
Or you can download previous version of the software in the downloads section of my website: www.retrodepot.net