In directory [JEDCOM.PARTY.REV5_3] you'll find the newest stuff:
  in particular PARTY.DSP  DEFINES.DSI   OCTOPUS.DSI     PBOOT.MOT (the rom)
.. this incorporates Jed's new stuff as far as I can tell.
  You can also get the new stuff from /REV53 on my toadPC if you prefer...

I don't know how to exercise the new features of Jed's roms; i looked at the
DSPLINK tests and tried them a bit.  The DSPLINK's can send and receive data
EXCEPT!!! they don't return when full if you select 
  "DUMP RECEIVE BUFFER WHEN FULL"  -- maybe that routine didn't get changed
when the polarity of the GINT bit switched???

I need to get your new code so I can add it to my new code and checksum it.

'DUMP RECEIVE BUFFER WHEN FULL' might not work if you are using a Rev A
MultiSync Board because of the interrupt line contention with the SCUM IC.
Rev B boards don't have this problem.

I only have one setup so it is difficult for me to test things like that.

Jed