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From: drxmann@walt.cc.utexas.edu (Dustin Christmann)
Newsgroups: comp.sys.amiga
Subject: Re: NTSC-PAL
Message-ID: <34481@ut-emx.UUCP>
Date: 25 Jul 90 21:39:49 GMT
References: <1895@ndmath.UUCP> <1990Jul25.040811.17050@uokmax.uucp> <52072@iuvax.cs.indiana.edu>
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Reply-To: drxmann@walt.cc.utexas.edu (Dustin Christmann)
Organization: The University of Texas at Austin, Austin, Texas
Lines: 26

In article <52072@iuvax.cs.indiana.edu> amhartma@silver.ucs.indiana.edu (Andy Hartman - AmigaMan) writes:
>
>I thought that PALBoot and programs like it just SIMULATED a PAL display.
>Obviously, an NTSC machine can't be turned into PAL without hardware changes.
>But don't these types of programs (PALBoot, etc.) just open an NTSC screen
>which is just an interlaced screen with more vertical rows?  Seems to me that
>a FlickerFixer would make this display even better to see.  Anyway, with 
>PALBoot, I still lose the last few lines on the bottom of the screen sometimes.
Nope. BootPAL (and BootNTSC) in the NTSC-PAL distribution basically tell the
computer it is a PAL computer and have the Agnus send out the appropriate sig-
nals. Note that this only applies to the ECS Agnus, as it is the only one that
can handle both types of signals. Really to make your NTSC 2000 a PAL 2000 (or
vice versa) permanently, simply change the state of J102. If it is open, close
it. If it is closed, open it. (Really simple, I know, but not everyone is an
EE.) The reason you lose a few lines is simply because PAL Amiga display have
256 lines (512 interlaced,) which is more than your monitor can handle, I
think.

Thanx,
Dustin Christmann

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