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Article #13788

Re: reboot a PAL machine into NTSC

#13788
From: John Flanagan
Date: Tue, 20 Feb 1990 01:37
44 lines
2587 bytes
In article <9002181052.AA03247@virgo.tau.ac.il> <finkel%math.tau.ac.il@CUNYVM.CUNY.EDU> writes:
>Hello everyone,
>
>This is a program I wrote last night to reboot a PAL machine into
>NTSC mode. You must have the new Agnus chip, and Kickstart 1.3 .
>The program relies on static location of certain Kickstart 1.3
>ROM instructions, so it MUST be modified for Kickstart 1.2 . Are there
>any users of the new Agnus chip users with Kickstart 1.2??
>[...]
>The program can be easily modified to reboot an NTSC machine in PAL
>mode, but I remember reading that the american monitors can't work
>in PAL mode, while the european monitors can work in both modes.

Well, just for completeness, I have NewZapped Udi's NTSCBoot to create
PALBoot, which reboots North American Amigas into PAL mode.  The American
1084 monitor can handle PAL just fine, apparently, since I'm using it that
way right now.  This also works fine on LUCAS/FRANCES with the 32-bit
Kickstart, as I can attest.

The uuencoded binary follows.  The source code can be found in Udi's post.
I apologize for doing this the ugly way (NewZapping) instead of doing this
the proper way (reassembling the source code), but I'm having trouble
figuring out Lattice's ASM;  I'll have to ask Lattice for some better
documentation than comes with their compiler, I guess.

Anyway, as Udi warns, you NEED the 1-Meg Agnus and Kickstart 1.3 to
use this, and it breaks all the rules. But it works, and is a nifty way
to get some extra screen real estate for free!  

Udi:  How about submitting NTSCBoot and PALBoot to Tad Guy?

-------------------Cut here--------------------
begin 664 PALBoot
M   #\P         !               (   #Z0    @L>  $3J[_:D?Y -_Q
7HG(@+'@  DOY  -!($YP3M5.<0   _((
 
end
-------------------Cut here--------------------


John Flanagan				Space Sciences Laboratory
johnf@soc1.ssl.berkeley.edu		University of California
(...!ucbvax!soc1.ssl!johnf)		Berkeley, CA 94720
Manners Maketh Man.			(415) 643-6308
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Message-ID: <1990Feb20.013713.12554@agate.berkeley.edu>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!zaphod.mps.ohio-state.edu!usc!ucsd!ucbvax!agate!sag4.ssl.berkeley.edu!johnf
References: <9002181052.AA03247@virgo.tau.ac.il>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!zaphod.mps.ohio-state.edu!usc!ucsd!ucbvax!agate!sag4.ssl.berkeley.edu!johnf
From: johnf@sag4.ssl.berkeley.edu (John Flanagan)
Newsgroups: comp.sys.amiga.tech
Subject: Re: reboot a PAL machine into NTSC
Summary: And the other way around!
Message-ID: <1990Feb20.013713.12554@agate.berkeley.edu>
Date: 20 Feb 90 01:37:13 GMT
References: <9002181052.AA03247@virgo.tau.ac.il>
Sender: usenet@agate.berkeley.edu (USENET Administrator;;;;ZU44)
Organization: University of California, Berkeley
Lines: 44