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- Path: news.muc.de!hwg!heinz
- Subject: Re: AddIntServer + VERTB strangeness
- Newsgroups: comp.sys.amiga.programmer
- References: <199603120851.IAA51888@poseidon.bfs.unibol.com>
- Organization: Private
- Reply-To: heinz07@ibm.net
- X-Newsreader: TIN [AMIGA 1.3 950726BETA PL0]
- From: heinz@hwg.muc.de (Heinz Wrobel)
- Message-ID: <heinz.17bc@hwg.muc.de>
- Date: Sun, 17 Mar 96 21:24:35 GMT
-
- John Girvin (jgirvin@bfs.unibol.com) wrote:
- >When I install a high priority (127) vertical blank interrupt server it
- >seems that the other, lower priority, servers in the chain get called
- >even if my server returns with Z set (or is it NZ? cant remember offhand!)
- >to indicate that no further processing is necessary for this interrupt.
-
- code clear (indicating non-zero). Servers on the chain should return
- with the Z flag clear if the interrupt was specifically for that
- server, and no one else. VERTB servers should always return Z set.
-
- You may not terminate the VERTB server chain.
-
- >How can I ensure that my interrupt server is the *only* one that gets
- >called? On my 1200-030 (V39) it doesnt really matter that the other servers
- >get CPU time, but on my a500 (V37) things really *crawl* along.
-
- I highly doubt that this is your problem. Otherwise everything
- would "crawl along". You must be doing something wrong.
-
- --
- Heinz Wrobel Private Mail: heinz@hwg.muc.de
- My private FAX: +49 89 850 51 25, I prefer email
-