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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: CLS2086 on April 20, 2006, 08:19:57 PM

Title: Amiga 1000 : switch between 50 and 60 Hz
Post by: CLS2086 on April 20, 2006, 08:19:57 PM

Hi,
does anybody now a good trick that work in all case with all game than can run on Amiga 1000, in 60 Hz mode with a 50 Hz PAL Amiga ?
with A1200/CD/4000 it's easy with the Early kick.
On A500/A2000, it's possible with a modification.
But on the original Amiga ?  :-?   :-o

Title: Re: Amiga 1000 : switch between 50 and 60 Hz
Post by: TjLaZer on April 20, 2006, 08:22:47 PM

Can't be done as the old Agnus is specific to either NTSC or PAL.

Title: Re: Amiga 1000 : switch between 50 and 60 Hz
Post by: mr_a500 on April 20, 2006, 08:28:08 PM

I'd like to know too.

I used to use "Degrader" to run PAL games on my NTSC A500 (using 1.3 ROM), but when I tried it on my A1000, it didn't work (using 1.3 kickstart disk). I think the A1000 might not be able to switch modes like later Amigas.

Title: Re: Amiga 1000 : switch between 50 and 60 Hz
Post by: Matt_H on April 20, 2006, 11:44:38 PM

Can a later Agnus be installed in an A1000?

Title: Re: Amiga 1000 : switch between 50 and 60 Hz
Post by: leirbag28 on April 21, 2006, 01:36:33 AM

Hmmm, thats odd............as far as I know.the A1000 was the most compatible Amiga of all.  From my experience PAL games just ran in NTSC mode with the bottom of the screen slightly cut off.  I never had a problem with any games thaty I remember, except if they required more than 512k of RAM wich I didnt have.

I ran Kickstart 1.3................1.2 for Alien Syndrome specifically......didnt work with 1.3 for some reason.

Title: Re: Amiga 1000 : switch between 50 and 60 Hz
Post by: SamuraiCrow on April 21, 2006, 02:07:42 AM

Quote

Matt_H wrote:
Can a later Agnus be installed in an A1000?

Nope.  Different chip socket type IIRC.

Title: Re: Amiga 1000 : switch between 50 and 60 Hz
Post by: Zac67 on April 21, 2006, 07:10:23 AM

@leirbag:
A PAL screen with the bottom slightly cut off is called - NTSC... :roll:

To change an A1000 from NTSC to PAL or vice versa the Agnus has to be replaced with its counterpart.