Path: utzoo!attcan!uunet!lll-winken!lll-tis!ames!ucsd!ucsdhub!jack!crash!pnet01!haitex
From: haitex@pnet01.cts.com (Wade Bickel)
Newsgroups: comp.sys.amiga
Subject: Re: VBlank interrupt servers
Message-ID: <3421@crash.cts.com>
Date: 12 Sep 88 10:36:24 GMT
Sender: news@crash.cts.com
Organization: People-Net [pnet01], El Cajon CA
Lines: 28


Hi Stephan,

        I've had particularly bad results setting the priority of the VBlank
server above 10.

        Also, by setting your priority at -60 you will be creating a variance
between VBlank cycles, as code in some of the servers (such as the IntuiTicks)
will be executoed only on some VBlanks, and by-passed on others.

        If you want real stability, you might try making a handler, and
putting your own server in front of the system's (This is a C= no no!).

        Another possibility might be to use the external interrupt pin and a
little custom hardware.  In this way the first Amiga would gather its timeing
from the VBlank, and then cause an interrupt in the next machine on the
the external interrupt line, which would cause the same to happen to the
subsiquent machine, and so on and so on and ...


                                                        Good Luck,


                                                                Wade.

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