Path: utzoo!utgpu!watmath!clyde!att!ucbvax!ECNCDC.BITNET!UUCJEFF
From: UUCJEFF@ECNCDC.BITNET
Newsgroups: comp.sys.atari.st
Subject: Spurious Interrupts
Message-ID: <8812011454.AA04690@ucbvax.Berkeley.EDU>
Date: 1 Dec 88 13:38:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 11

I run programs in which I have an Xbtimer interrupt handler which outputs
MIDI data (by writing directly to the ACAI register, not TOS or XBIOS) along
with a revectored MIDI input routine.  Occasionaly 24 bombs drop across my
screen, indicating spurious interrupts.  Does anyone have experience in
clearing these up.   As far as I know, I have obeyed all the rules.
The errors do not occur if the Xbtimer runs and the MIDI sent to the ST.

I might try disabling the Xbtimer while there is MIDI input but who wants
to do that.

Jeff Beer, UUCJEFF@ECNCDC.BITNET