amstrad: added preliminary Amstrad/Pace RS232C interface.  The terminal
software included with the original Amstrad interface works, but not much else
does at this stage.  [Barry Rodewald]

Out of whatsnew:  HoneyTerm (part of the later Pace interface) expects bit 6
of RR0 on the Z80DART to be set (seems to unsupported in the current z80dart
device).  Not sure on why other software doesn't work as yet.