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From: c55-grig@buddy.Berkeley.EDU (Ted Griggs)
Newsgroups: comp.sys.amiga
Subject: Re: Audio Interrupt vector
Message-ID: <1074@zen.BERKELEY.EDU>
Date: Thu, 20-Nov-86 16:47:58 EST
Article-I.D.: zen.1074
Posted: Thu Nov 20 16:47:58 1986
Date-Received: Thu, 20-Nov-86 23:36:47 EST
References: <8611191016.AA19776@cory.Berkeley.EDU>
Sender: news@zen.BERKELEY.EDU
Reply-To: c55-grig@buddy.Berkeley.EDU.UUCP (Ted Griggs)
Organization: University of California, Berkeley
Lines: 26
Summary: Has anyone done anything with any interrupt?

[]

Does the procedure and example program given in the ROM Kernal Manual
actually work?

Here is what I did:
wrote 68000 machine lang program that changes a check variable from
0 to 1 then rts.

set up the interrupt structure EXACTLY in the same manner as the RKM

called SetIntVector

I assume all went well because the call returned a pointer to the old
interrupt structure of name audio.device.

No interrupt occured when I started the dma  (i.e. check var never changed)

I looked at intenar and bit 7 (for audio channel 0 or 2, depending where
one looks - but I was using all channels so it does not matter) was not set
(bit 14 set was so interrupts were enabled in general).


Okay, so what is wrong?  Thanx.
Ted Griggs
ucbvax!buddy!c55-grig