26 Apr
2007
26 Apr
'07
8:35 p.m.
Austin Pass wrote:
Torch certainly made an "internal" Z80
co-processor for the Master (I have
one).
They made a couple - the Communicator's just a Z80 and local RAM, whilst the
Tosca's got a "high speed" serial port local to the board.
There were also the two Torch Unix 68000 copro boards - the Neptune and Atlas
- both of those had a local Z80 and could also run CP/N (although I can't
remember if it required a ROM change on the BBC to do so)
cheers
Jules