Path: utzoo!attcan!uunet!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!wuarchive!udel!rochester!rutgers!bpa!cbmvax!daveh
From: daveh@cbmvax.commodore.com (Dave Haynie)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Difference American vs. European Amiga
Message-ID: <9661@cbmvax.commodore.com>
Date: 13 Feb 90 21:38:10 GMT
References: <15465.AA15465@slaka.sirius.se>
Reply-To: daveh@cbmvax.cbm.commodore.com (Dave Haynie)
Organization: Commodore, West Chester, PA
Lines: 29

In article <15465.AA15465@slaka.sirius.se> micke@slaka.sirius.se (Mikael Karlsson) writes:
>What are the differences between an american and a european Amiga?
>If I buy an Amiga in the US, what changes do I have to make to get
>it to work in Europe? The power supply, ok. 

At least some of the A2000 power supplies can be internally jumpered for
110/120 vs. 220/240.

>Anything else? The new Agnus handles PAL as well as NTSC. Great, but 
>how does it know the difference? Automagically? A jumper?

Other than the power supply, you need to take care of Agnus, like you 
surmised.  For any ECS Agnus, you need only worry about its startup
configuration, which is set via jumper.  On the A2000, this jumper is a
solder-short jumper called J102; closed for NTSC, open for PAL.  Once
1.4 comes along, you could actually change in software for all intents
and most purposes.

If you're involved in video work, you'll need to change the system crystal
as well.  In PAL machines the main crystal is 28.357MHz crystal, on NTSC
machine this is a 28.636MHz crystal.  These work into the color clocks, so
a crystal change is required for video work, but nothing else.

>Mikael Karlsson, Lovsattersvagen 10, S-585 98  LINKOPING, SWEDEN

-- 
Dave Haynie Commodore-Amiga (Systems Engineering) "The Crew That Never Rests"
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                    Too much of everything is just enough