rickf@pnet02.cts.com (Rick Flower) (02/02/89)
I'm currently relying on the fact that I CAN lower/raise the DTR line via the
CIA that is connected to the Serial port that is standard in the
500/1000/2000.. Is there a "Better" way to do the same thing that doesn't
rely on the CIA or which port you might be using...?? Such as the "Default" or
"built-in" or "1st extended" ports (as defined by Bryce Nesbit of C-A).. It
would certainly be NICE to have a "pseudo" standardization... All I know is
that if a modem is connected to ANY of these serial ports, it really does suck
when the ONLY way to hang up the phone is by doing the "+++ <cr> ATH0 <cr>"
junk! Dropping the DTR is a much more effective way of doing things....
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I Thought So...
UUCP: {ames!elroy, <backbone>}!gryphon!pnet02!rickf
INET: rickf@pnet02.cts.com
===============================================================================papa@pollux.usc.edu (Marco Papa) (02/03/89)
In article <11543@gryphon.COM> rickf@pnet02.cts.com (Rick Flower) writes: |I'm currently relying on the fact that I CAN lower/raise the DTR line via the |CIA that is connected to the Serial port that is standard in the |500/1000/2000.. Is there a "Better" way to do the same thing that doesn't |rely on the CIA or which port you might be using...?? Such as the "Default" or |"built-in" or "1st extended" ports (as defined by Bryce Nesbit of C-A).. It |would certainly be NICE to have a "pseudo" standardization... All I know is |that if a modem is connected to ANY of these serial ports, it really does suck |when the ONLY way to hang up the phone is by doing the "+++ <cr| ATH0 <cr|" |junk! Dropping the DTR is a much more effective way of doing things.... As Bryce suggested, a "better" way is to close the device, wait 1 sec and then reopen it (with the SAME parameters). I tried it and it works just fine. DTR is dropped properly. Multi-serial manufacturers should ensure that this technique works on their hardware too. -- Marco Papa 'Doc' -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= uucp:...!pollux!papa BIX:papa ARPAnet:pollux!papa@oberon.usc.edu "There's Alpha, Beta, Gamma and Diga!" -- Leo Schwab [quoting Rick Unland] -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
bryce@cbmvax.UUCP (Bryce Nesbitt) (02/03/89)
In article <11543@gryphon.COM> rickf@pnet02.cts.com (Rick Flower) writes: |I'm currently relying on the fact that I CAN lower/raise the DTR line via the |CIA that is connected to the Serial port that is standard in the |500/1000/2000.. Is there a "Better" way to do the same thing that doesn't |rely on the CIA or which port you might be using...?? Close the device, then reopen it. (include error checking!) This will drop then raise DTR. Eventually there will be a better way... but this one works for all versions of the serial.device back to V1.0!! It will also work for extended units. -- |\_/| . ACK!, NAK!, EOT!, SOH! {O o} . Bryce Nesbitt (") BIX: bnesbitt U USENET: cbmvax!bryce@uunet.uu.NET -or- rutgers!cbmvax!bryce Disclaimer: I'm not an official, and this is not an official opinion.