🚀 go-pugleaf

In <3p3es2$20ib@news-s01.ny.us.ibm.net>, whiter@ibm.net writes:
>Many moons ago (well February I think) I reported a problem that all my windows
>comms software (particularly Delrina Winfax Pro V4 and Smartcom for Windows)
>caused  system hang/crash.
>
>
>These programs work fine in Windows under native DOS, but not in Windows under
>OS/2.  I am running "red box" OS/2 v3, Windows for Work Groups 3.11 and MS-DOS
>6.22.

I hope I can help you here... not only am I a former GT student, but I'm one of the
people responsible for OS/2's COM VxD emulation!  A quick explanation:  In the past
(before WfW 3.1) the Windows COM driver talked directly to the hardware (which
we virtualized); starting with WfW the COMM.DRV driver talks to a VxD (which OS/2
doesn't support).  This interface is not well documented, and so I largely had to
poke in the dark to emulate the VxD interface.  (My VCOM driver not only virtualizes
the hardware now, but also intercepts the attempted VxD interface).  We were
able to get *most* windows com software working except for those that supply
their own VxDs (which I think is the case for Delrina's Winfax Pro).

If you have a package which you can't get to work and which doesn't use a VxD,
you can try installing the windows COMM.DRV from Windows 3.1.  (Which is a 
perfectly good solution, and what we would have done except that IBM can't 
ship Microsoft code without paying royalties... )

--Rob Rose
   OS/2 Device Driver Development
   IBM Boca Raton