Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!apple!motcsd!starnet!sschaem
From: sschaem@starnet.uucp (Stephan Schaem)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: VPOSR/VHPOSR custom register values (which do they take)
Keywords: video position timer, task timing, PAL/NTSC differences
Message-ID: <1991Jun19.165822.19399@starnet.uucp>
Date: 19 Jun 91 16:58:22 GMT
References: <1991Jun18.120731.13523@odin.diku.dk>
Organization: Starnet-Public Access UNIX-Los Altos,CA 415-949-3133, login:info
Lines: 15


 About the info Found in SYSBase.You can have 50 in powerfrequncy and
 still have 60hz display... (From experience:-)
 What you should do maybe is time the display to get your basic value.

Blank time can false your timing.Do you base cpu time on a frame basis
or any time lenght? I dont think you will need the HPos.
If you only want to get that for task cpu usage divide frame into time
slot (Vertical lines).Than Count frames,Stop,Start...
Anyway for that you can time one frame so you wont even care if its 50
or 60 and install an interupt server (or else).
Also since its % you can use the HPos vithout timing...
Infact every programer that I know do the above in a way or another.

								Stephan.