Pcomm port to XENIX R3.4

[Phillip R. Acuff]

pcomm is a unix clone of the popular PROCOMM for MS-DOS machines.  It
is a window oriented communications package with xmodem, ymodem, zmodem
support with a phone directory for autodialers.  It is very nice 
(although the author did not put kermit in -- PROCOMM has kermit also).

The code was recently posted to comp.sources.unix.
The code was originally written for UNIX V, however after making the minor
XENIX/UNIX V header changes, I got the the code to compile using the
large memory model.  I do not use XENIX for development, but use UNIX V.3.
So when pcomm is run, it ends up getting a buss error/segmentation violation.
Unless some pointer combination is messed up, I don't know what the problem
might be.  I do not have time to get into debugging this.  Anyone interested
in doing the port, or is the port already finished.  It is very worthwhile
to have.  BTW the machine I tried running it on is an INTEL 310AP/311 w/ 
4 meg ram.