Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!udel!brahms.udel.edu!jon
From: jon@brahms.udel.edu (Jon Deutsch)
Newsgroups: comp.sys.amiga.misc
Subject: Re: fat agnus + pal + noistrackers
Message-ID: <20665@brahms.udel.edu>
Date: 22 Apr 91 14:46:54 GMT
References: <1991Apr21.224513.46281@vaxb.acs.unt.edu>
Organization: University of Delaware - Smith Consulting
Lines: 29

In article <1991Apr21.224513.46281@vaxb.acs.unt.edu> wright%etsuvax2@ricevm1.rice.edu writes:
>In article <16752@chaph.usc.edu>, wdao@girtab.usc.edu (Walter Dao) writes...
>> 
>>Rebels total triple trouble). However, the music is also slower too. 
>>is it normal ? A lot of the soundtracks seem "more" right on NTSC machine.
>>but slower on Pseudo Pal. 
>
>It's called Vblank.  Because a 50hz refresh rate is slower than a 60hz
>refresh rate, songs are slower in PAL.  They are timing the song off of 
>the vblank timer rather than a CIA timer.  A CIA timer will play the song
>the same on all machines.  Vblank timing changes to the speed of the screen 
>refresh rate.  Hence, slower songs in PAL and faster in NTSC unless they use 
>the CIA timer.  ProTracker 1.1b is the first tracker that I have seen that
>gives you a choice between playing the song with the Vblank or the CIA timer.
>Most demos, unfortunately, use the Vblank which slows the songs.  
>

OK.  I can see that. But are the people in PAL-land writing these songs
to be this slow?  In other words, when in PAL mode on an NTSC machine,
will I be hearing the music at the same speed as it was intended?

Also, is installing a Super-Fat Agnus easy?  Do you need some kind of kit,
or is it just a one-step operation?


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