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Author Topic: Planning new A1200 purchase, need advice for NTSC connectivity.  (Read 5445 times)

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Offline omnicron10

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If you want PAL output on a NTSC amiga AGA system you just need to pull pin 41 of the Alice chip and connect to a 4.7k ohm resistor to 5 volts.  

I remember a lot of AGA stuff switched to PAL on AGA systems if they needed PAL.

It was more of the OCS/ECS that did not although later on ECS game would switch to PAL a lot also.

I use to my TIMM monitor in a "PAL" mode as well as a 1084.  It worked but I never saw all the display as it was all moved too low.  Not until I got the indivision and used VGA output from that did I see what I was missing even when I was running PAL on a 1084.  

For example.  Pinball Dream.  I never saw the scroller at bottom of the option screen to choose tables until I used indivision.  

FYI
A500/030 40mhz with A530, Indivision ECS, , KS 3.1, 2 Megs Chip, 8 Megs fast.
A600 Vampire II
SAM440EP 667, Amiga OS 4.1u1
Dual G4 1.2 Mac MorphOS
Chameleon
CD32
SX64
128D
128
C64
64C
 

Offline omnicron10

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Re: Planning new A1200 purchase, need advice for NTSC connectivity.
« Reply #1 on: June 25, 2010, 02:08:24 AM »
That is correct.  Since ECS, all amigas can do PAL timing and 50 hz output.  

The issues is the actual output is more like PAL-N.  50hz display with a NTSC subcarrier when using a A520 or like device.

The RGB 1084 output works but cuts off the bottom of the screen a lot.  Not enough to make it not usefull but more than I would like now knowing what I know.

Enjoy!
A500/030 40mhz with A530, Indivision ECS, , KS 3.1, 2 Megs Chip, 8 Megs fast.
A600 Vampire II
SAM440EP 667, Amiga OS 4.1u1
Dual G4 1.2 Mac MorphOS
Chameleon
CD32
SX64
128D
128
C64
64C