rmorris@hubcap.clemson.edu (Robert Morris) (08/07/90)
I need to turn on a box which is hooked to a serial port and is activated by setting or resetting the DTR. How does one do this? I've seen software that can so I know it can be done, I just don't know, and can't find out how. Thanks in advance ----- Robert Morris <RMORRIS@HUBCAP.CLEMSON.EDU>
grege@gold.GVG.TEK.COM (Greg Ebert) (08/07/90)
In article <10038@hubcap.clemson.edu> rmorris@hubcap.clemson.edu (Robert Morris) writes: >I need to turn on a box which is hooked to a serial port and is activated by >setting or resetting the DTR. How does one do this? I've seen software that Your serial port is on either 2F0-2F8, or 3F0-3F8. Use DEBUG to find out. Bit 0 of 2F4 (or 3F4) controls the state of DTR. Writing a '0' will put out -12v on DTR; writing a '1' will put out +12v. Have fun.
drezac@dcsc.dla.mil (Duane L. Rezac) (08/07/90)
From article <10038@hubcap.clemson.edu>, by rmorris@hubcap.clemson.edu (Robert Morris): > I need to turn on a box which is hooked to a serial port and is activated by > setting or resetting the DTR. How does one do this? I've seen software that > can so I know it can be done, I just don't know, and can't find out how. > Thanks in advance ----- > Robert Morris > You can do it with a fossil driver. check out x00v123h.arc from simtel20. It replaces INT 14 with it's own routines, and one of them controls DTR. Duane L. Rezac -- Verse of the Hour: Train up a child in the way he should go: and when he is old, he will not depart from it. Prov. 22:6 -- +-----------------------+---------------------------------------------------+ | Duane L. Rezac |These views are my own, and NOT representitive of my place| | dsacg1!dcscg1!drezac drezac@dcscg1.dcsc.dla.mil of Employment. | +-----------------------+---------------------------------------------------+
robin@uhccux.uhcc.Hawaii.Edu (Robin Amano) (08/09/90)
In article <10038@hubcap.clemson.edu> rmorris@hubcap.clemson.edu (Robert Morris) writes: >I need to turn on a box which is hooked to a serial port and is activated by >setting or resetting the DTR. How does one do this? I've seen software that What exactly do you need to do? Are you just toggling DTR on the port or are you going to communicate through the port? Most communication software packages have some kind of hang up command that drops DTR and when you connect turns it back on. Yterm will do this with dropcom or the new one 2.1 will toggle DTR with ^F1, Kermit will do this with ha, Procomm with Alt H. Not real sure what you are looking for.