On Mar 29, 2016 09:56am, Mike Luther wrote to Robert Wolfe:

 ML> Well Maybe I can explain a bit but who knows?

Um, no, you didn't explain anything at all, unfortunately.  Really nothing to
do with my original question.

 RW>> Well, it looks like I got OS/2 Warp 4 installed in a VM and the BBS
 RW>> working with SIO 1.60d and VMODEM.  Unfortunately, whenever I go to
 RW>> start the BBS, I am getting the popup saying that the virtual com port
 RW>> is in use when it really isn't.  If I ignore through the error boxes,
 RW>> the BBS starts up just find and runs normally.

 RW>> Unfortunately, this popup is an annoyance when trying to run a front
 RW>> end mailer (ViaMail in this case) and it goes to load the BBS and the
 RW>> BBS exits back out to the mailer when a caller logs off.

^^^^^  My original question/problem.

 ML> I think few people have much knowledge of how OS/2 handles actual IRQ
 ML> numbers and ring level work that are really needed for carrying OS/2
 ML> back to way before even DOS operations for some things.  For example,
 ML> 'normal' IRQ top level stuff only applies to IRQ 'numbers' up to what I
 ML> think I recall are number 8.  That's not enough to work with some
 ML> things that we need for IRQ level numbers which go up even way beyond
 ML> number 8 especially when OS/2 is 'later' dealing with multiple CPU
 ML> operations that, as I think I recall this, are up to as many as sixteen
 ML> separate CPU's which then must be able to be coordinated with each
 ML> other as to what each CPU is doing that must be absolutely understood
 ML> by any action even down to COMM ports so that things don't violate the
 ML> order of operation for multiple CPU stuff that grew up long after the
 ML> original ring level and machine language code which I was originally
 ML> working with LONG before there was OS/2 even there.

[...much deletia...]

Sorry, but all I got from your original post was a bunch of information that I
don't think related to my question so it was basically just information
overload for me.  Sorry.

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