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 :)