Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!asuvax!ncar!umigw!mthvax!mathrich
From: mathrich@mthvax.cs.miami.edu (Rich Winkel)
Newsgroups: comp.lang.pascal
Subject: Re: Serial line interrupt
Message-ID: <1990Feb27.002405.19188@mthvax.cs.miami.edu>
Date: 27 Feb 90 00:24:05 GMT
References: <1541@kannel.lut.fi>
Distribution: comp
Organization: U of Miami Dept. of Math. and Computer Science, Coral Gables, FL 33124
Lines: 18

In article <1541@kannel.lut.fi> kpv@kannel.lut.fi (Kari Vaittiniemi) writes:

>Hi,

>I am writing a TSR to serve stuff coming from serial line on a PC. The
>problem seems to be how to get the TSR awake when something comes from
>the serial line. I have put the interrupt enable register to generate
>an interrupt when receive data is on the register and I can see something
>happening on the interrupt identification register on the 8250 but as I
>understand I should get an INT 0C from the COM1 interrupt and I can t see
>anything. I am using TP5.5 and Turbo Professional. Can anyone tell me
>what I did forget or any other hints how to do it ??

You need to program both the int enable register and the UART.  Check out
the turbopas directory on simtel20 for examples.  Sorry I can't be more
specific .. I don't have any references with me.

Rich