dmf driver for 4.2 (Harware 'feature' of VMZ32)

[Chris Maltby]

If the driver for your VMZ32 (amd probably dmf32) uses the auto xon/xoff
mode (I know ours does), once an xoff has been seen, the only way for
transmission to resume is to receive xon or controller clear.  Perhaps
they can be fiddled by using the maintenance modes...  This feature gives
the appearance of hung lines, but typing xon brings them to life again...

Chris Maltby
University of Sydney