MOS IO COMMANDS
io <MOS channel> <MIDI channel> - set mos chan to midi channel
ic (i)nternal|(e)xternal|(l)oop - set clock/scheduler type
ic (m)idi on/off | t/f - e.g., ic m t, turn midi input ON/OFF.
ic (r)cc  on/off | t/f - turn console input ON/OFF.
ic (p)atch on/off | t/f - enable/disable bank/patch setting
ic (s)im  on/as/off | t/f - enable/disable simulation run. as-ascii notes.
ik (t)hru <MIDI channel> - keyboard in redirected to MIDI channel
ik (m)ono <patch> - sixtrak specific, patch sets keyboard patch
ik (s)plit <note> <MIDI channel> - split keyboard
im <MIDI channel> (l)ocal on/off | t/f - set local on/off
im <MIDI channel> (m)ono|(p)oly - set mono or poly mode
im <MIDI channel> (o)mni on/off | t/f - set omni on or off
im <MIDI channel> (n)otesoff - send all notes off 
im <MIDI channel> (pa)tch <number> - send patch now
im (a)ctive - send MIDI active sense message
ig <MIDI base channel>  - set generic driver base channel
it <instr number> <MIDI base channel>  - set tx7 base channel
it <instr number> <<standard MIDI messages>>...
is <MIDI base channel>  - set sixtrak base channel
is <<standard MIDI messages>>...
is (w)heel on|off - turn wheels on / off on sixtrak
is (m)aster - put in master/slave mode
if <MIDI base channel>  - set fb01 base channel
if <<standard MIDI messages>>...
