🚀 go-pugleaf

In <1992Aug5.165155.8708@news2.cis.umn.edu> alberti@mudhoney.micro.umn.edu (Albatross) writes:

>I'm using X.00 v 124 for a communications program and up till now everything
>looked good.  I can communicate through the port fine.  Now I have a problem.

>According to the documentation all I need to do to toggle DTR is (in C)

>regs.h.ah = 6; //(DTR status)
>regs.l.al = 0; //(or 1 for UP but I'm trying to get it down)
>regs.x.dx = 0; //(COM 1)
>X00(&regs, &regs);

>Seems simple enough, but nothing happens.  DTR stays up.

In a followup, I can toggle DTR from OUTSIDE my program using XU:  whichever
state I leave DTR in, the program cannot change it.  So if I use XU to put
DTR ON, it stays on, and if I use XU to put DTR OFF, it stays off, even when
my program does an "Activate port" Function 1Ch.  Anybody?
--
Bob Alberti: Computer & Information Services U of MN | aka: Albatross | Unitar-
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