zemon@felix.UUCP (Art Zemon) (09/30/85)
I'm trying to write a program which, among other things, must have
buffered input from one of the serial ports. I figured that the way
to do that was to hook my own buffering routine into the "Serial
Device #1" interrupt (INT 0CH). So I used function 25H to "Set
Interrupt Vector" and transmitted a character to serial port #1
and...
...nothing happened. My interrupt service routine was never called.
The rest of the program continued to run normally but nothing else
happened.
After I got over my disappointment and read the book (MS-DOS Version
2 Programmer's Utility Pack) some more I decided to write to
net.micro.pc in the hopes that someone out there can supply an
explaination and (with luck) a fix.
To be a bit more concise, why didn't my interrupt service routine
get called and what do I do to enable interrupt driver serial input?
Thanks,
--
-- Art Zemon
FileNet Corp.
...! {decvax, ihnp4, ucbvax} !trwrb!felix!zemon