[TriLUG] WAY OT: 80x86 Assembly question: ISRs

[Brian Henning]

Ha!  Nevermind.  I figured out what the bug in my code was.  The answer, of
course, is "yes, but it may interfere with any on-screen keyboard on your
pen-based computer."

~B


-----Original Message-----
From: trilug-bounces at trilug.org [mailto:trilug-bounces at trilug.org]On
Behalf Of Brian Henning
Sent: Monday, November 22, 2004 7:08 PM
To: TriLUG
Subject: [TriLUG] WAY OT: 80x86 Assembly question: ISRs


Hey Guys,
  Anyone out there fluent in 80x86 assembly language?  I'm trying to fiddle
with ISRs (interrupt service routines) and am hitting a few snags..  My main
question is, is it safe to call other interrupts (i.e. an instruction like
int 09h) from within an ISR?  Most of what I've read seems to imply it ought
to be perfectly safe (saying the processor architecture is designed to
handle nested interrupt scenarios), but nothing I've found yet comes right
out and says it one way or the other.

Thanks so much!

Cheers,
~Brian

--
TriLUG mailing list        : http://www.trilug.org/mailman/listinfo/trilug
TriLUG Organizational FAQ  : http://trilug.org/faq/
TriLUG Member Services FAQ : http://members.trilug.org/services_faq/
TriLUG PGP Keyring         : http://trilug.org/~chrish/trilug.asc