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| subject: | Re: DosDevIOCtl for COM ports |
Moin Charles,
26.10.96 00:00, you wrote a message to Phil Crown:
...
PC>> Best advice I can give is to get a copy of pmtermsr.lzh from Peter
PC>> Fitzsimmons. Its an excellent multi-threaded comm port example.
CG> And where can I obtain that?
On my Fido BBSs (repacked as ZIP).
...
CG> So do I. My question was from a programs standpoint. SIO
CG> locks the port, yes. When you tell it to change the port rate,
CG> and it's already locked, does SIO unlock, then change it, then
CG> lock it, or does it just change it, and it stays locked? So if
CG> it was locked, by SIO, and I changed it to a new value, would it
CG> still be locked?
SIO 1.45 says:
-----------------------------------------------
Locked Baud Rate
Placing a colon and a baud rate following the communications port, eg
(COM1:38400,3F8,IRQ4), causes the port to be locked at that baud rate.
No program, OS2 or DOS, is allowed to change the baud rate.
-------------------------------------------------
It can be done, as su.exe locks/unlocks the baud rate. But that's
undocumented and you have to ask Raymond or debug su.exe.
PC>> Get pmtermsr.lzh from Peter F. I need a copy too, maybe he'll
PC>> upload it to an ftp site?
CG> Who is he? :)
Shame on you!
(He's the moderator of this echo)
C-x C-s
Vitus
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