LR> author suggested Named Pipes, of course, which leads us to
 LR> where we are now.  You had some other ideas.

 DN> Event semaphores.

        Yeah.

 DN> I've dug up my copy of Ralf Brown's interrupt list. We might be able
 DN> to get this sorted out quite soon, since the OS/2 program can do all
 DN> the grunt work of setting up the semaphore and posting it when it's
 DN> ready.

        Sure, that's the basic idea.  All the synchronization should be
controlled by the OS/2 program.  Do you think it would be best to let the
VDM do its own internal timing after initial synchronization, or have the
OS/2 program produce a heartbeat every 100ms?

 DN> The DOS program need only open the semaphore, wait on the
 DN> semaphore post and close it, using an INT for each. It should be
 DN> do-able in Power BASIC, since it can issue DOS interrupts (I think).

        Oh, surely.

 DN> I'll fiddle around with QBASIC, since I don't own a copy of Power
 DN> BASIC, to try it out here.

        'Should work, athough any DOS compiler should be OK.  Thanks,

                                                        Les

e-mail: lrhorer{at}fibrcom.com

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