The Systemation Amigo
A whole new implementation of the M18 processor - new processor, memory and IO cards - but still compatible with the M18 and so could run OS.
Typically built into a distributor cabinet with either a CDC Lark disk or an Amcodyne Arapahoe disk (both drives had SMD interfaces).
Amigo ran a new (assembler built) O/S designed to run existing M18 programs.
