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From: koleman@pnet51.orb.mn.org (Kurt "Koleman" Koller)
Newsgroups: comp.sys.amiga.audio
Subject: Re:  Module Players
Message-ID: <4676@orbit.cts.com>
Date: 23 Apr 91 03:05:30 GMT
Article-I.D.: orbit.4676
Sender: news@orbit.cts.com
Organization: People-Net [pnet51], Minneapolis, MN.
Lines: 37

davidc@contact.uucp (Ice Weasel) writes:
>In article <4616@orbit.cts.com> koleman@pnet51.orb.mn.org (Kurt "Koleman" Koller) writes:
>> 
>>Actually, using CIAB does not solve the problem.  The reason it boms i that he
>>is doing a bset to clear the interrupt, which clears all the interrupts,
>>including serial.  I know, I'm having the same problem with my player. 
>>Actually, if you are talking about Intuitracker, you're dead wrong, because
>>IntuiTracker uses the Vertical Blank interrupt, and not CIAs at all.
>
>Indeed... People don't seem to realize that these type of programs
>were devised to enable software (read: GAME) programmers to add nice
>soundtracks, and they're all oriented around the VBI's... 
>
>I own T.F.M.X. and it's also based on the VBI.  Sometimes a bit hard
>to program with, but the end result is very nice!
> 
>Dave
>-- 
>Dave Carlton (davidc@ziebmef.mef.org!white.toronto.edu)
>"There's more than one way to skin a cat", Lydia thought, as she
>nailed the little paws to the dissection board... Richard Deming

 
Yep.  I have a modified Med player that uses CIAB, and then disable the OS,
and manually set the CIAB on.  I find that one has to write code SO tight that
it gets in and out in one scanline, or you end up with jerky graphics.  No
problem with Vertical Blank interrupts.  It just all goes in the Vertical
Blank, hence no jerkiness.  Now we need a horizontal blanking interrupt, and
write code tight enough to fit there :^>  Heh.

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