DECmate III and Rainbow 100+

[Tom Jennings]

On Tue, 22 Feb 2005, Geoff Reed wrote:

> At 09:02 AM 2/22/2005, you wrote:
>> The Rainbow is a 8086 with a Z80 coprocessor (it's not PC compatable),
>> and will boot into either MS-DOS or CPM-86. CPM-86 cost about 10X
>> that MS-DOS did, so wasn't used much.

> I prefer to think of it as a Z-80 with an 8086 coprocessor :)

In some ways that's more accurate :-) The Z80 owns all the
peripherals.  There's shared memory between the two schizophrenic
halves. The Z80 owns the body, but the 8086 is the paranoid
personality that runs the show from behind.