The Insider News

Silicon Valle[^]:

In 1981, Digital Equipment Corporation (DEC) was shocked by the announcement of the IBM PC which threatened to steal market share from their high end systems, aka the VAX and PDP-11. One year later (1982), they responded with a “three pronged approach” which included... The Rainbow 100... DEC’s direct response to the IBM (aka IBM PC killer). It offered to run DOS, but also it had a Z-80 (found on Tandy machines and very popular at that times) to allow it to run CP/M (another wanna be from similarly named Digital Research. At last it had a VT100 terminal mode, so it could connect to big VAX systems.