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echo: os2prog
to: Charles Gaefke
from: Vitus Jensen
date: 1996-11-11 00:45:28
subject: Re: DosDevIOCtl for COM ports

Moin Charles,

07.11.96 22:19, you wrote a message to Vitus Jensen:

VJ>> You did??
VJ>> So what does 'locked baudrate' mean?  Nothing?

 CG> I think "locked baudrate" means the rate between the computer and
 CG> the modem does not shift while online.  

No modem will recognize a new serial speed while online.  Sioref says (as I
posted) that nobody may change the serial speed except su.exe and a reboot.
 If you changed it by your program that would mean a bug in SIO.


 CG> If you run SU, you'll see lots of commands for "locking" the
 CG> port, and not a single command for "unlocking" the port.

Type "su" and reread the output.


VJ>> How did you manage to change it?

 CG> I'll get back to you on this one.  I'm going to EMail Ray Gwinn. 
 CG> If anyone will have the answer, he will. :)

I don't think you can convince him to reveal an undocumented unlock IOCtl...

C-x C-s
    Vitus

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