A82: Return from interupt

To: Assembly 82 list <assembly-82@lists.ticalc.org>
Subject: A82: Return from interupt
From: Eric Piel <pieleric@etu.utc.fr>
Date: Thu, 5 Aug 1999 22:37:40 +0200 (MET DST)
Delivered-To: assembly-82-outgoing@towerguard.unix.edu.sollentuna.se
Delivered-To: assembly-82@lists.ticalc.org
Reply-To: assembly-82@lists.ticalc.org

Hi
I have made a little program to make sounds with the ti82. To change the noise I
use a interupt routine that slow down the calculator according a certain number.
But I encountered troubles when returning from the interupts: Whereas JP 0038h
works perfectly, EI / RETI stops the calculator. Moreover when I try the
different versions with an emulator both work fine (I've tried 3 emulators).
Perhaps the problems come from the fact that I also use D_HL_DECI?
Does anyone knows why such things happen?

I've attached the two versions and the scource code. The troubles are in the
last lines of the code (Because of a .org the program won't compile properly
with tasm instead use Assmebly studio 86).

Eric Piel

Techno.zip

Follow-Ups:

Re: A82: Return from interupt

From: Jeremy Wazny <j.wazny@ugrad.unimelb.edu.au>