The Rainbow 100 introduced by DEC in 1982. This desktop unit had a monitor similar to the VT220 in a dual-CPU box with both 4 MHz Zilog Z80 and 4.81 MHz Intel 8088 CPUs. The Rainbow 100 was a triple-use machine: VT100 mode (industry standard terminal for interacting with DEC’s own VAX), 8-bit CP/M mode (using the Z80), and CP/M-86 or MS-DOS mode using the 8088 and that’s what make it very interesting.
This is what it is supposed to look like
However our unit is missing the video cable to connect the base unit to the monitor. This cable also carries the keyboard signal to the base unit.
It is impossible to find one so I am trying to build one with a 15 pin terminal adaptor I found on Amazon
Let’s see how that goes first
This is the back of the monitor and base unit with the 15 pin port needed.