> The key piece of code to be developed would be an OS/2 VDD.
  > The BPQCODE TSR would be run in only one VDM.

 JdBP>   A better approach, I think, would be to code the BPQCODE program as an
 JdBP>   ordinary OS/2 process (far easier, to do, in fact, than all of the
 JdBP>   smoke and mirrors stuff necessary to have a TSR run in the
 JdBP>   background).  The VDD could communicate with the OS/2 process either
 JdBP>   via a character PDD, or via a more conventional IPC mechanism.

 JdBP>   I say this, because making a "distinguished" VDM that
runs the DOS TSR
 JdBP>   program would be quite complex.

The problem is that I do not control the BPQCODE module; John Wiseman does.
 It is written in highly optimized assembly language, and it does a lot of
tricks that are quite amazing.  For example, the BPQCODE TSR reallocates
freed code space to its own stack as it runs.  A port to OS/2 would be a
rewrite.

There is already a Windows VxD for BPQCODE, but it just shields the TSR and
runs it in V86 mode.

-- Mike

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