Amiga 1200 PAL <--> NTSC

[Akira]

ShawnD wrote:
Changing a PAL A1200 to NTSC following those instructions would leave you with a 60Hz PAL output (Hmmm, doesn't that actually exist?).

Sort of, I might be inclined to say. What happens when, with your PAL Amiga 1200, you switch to NTSC mode?

I think that the mod described wouldn't do as wanted. I have both an A600 PAL and an A1200 NTSC, and the 1200's PAL mode is PAL-M I think, which kind of keeps the color information in NTSC format but refreshes at 50Hz, or some such nonsense (I'm not much of a techy, as you might presume correctly but I get no color in my PAL(B/G etc) television set.)

Likewise, switching my PAL A600 to NTSC gets a no color image in my PAL-N TV (since it's outputting PAL(B/G etc) and not PAL-N), therefore the original poster, when switching his 1200 to NTSc, will probably get a proper 60Hz picture, but in black & white. If he performed the mod, his machine would default to this PAL-M thing and still have no colour in his TV set.

This is all tehoretically, but these "bi-norm" amigas are really strange. I need to get my hands on a bloody transcoder to get color when putting my Amiga in PAL.

Then again I need a transcoder to get color picture on anything I connect to these piss poor southamerican PAL-N TV sets  :pissed:

[Akira]

leirbag28 wrote:
@Akira

Philips TV's (and probably Magnavo's)  Support PAL mode............

The thing is, my friend, that there are a myriad of PAL modes. Dunno why, it's a pain in the arse, but they exist. And not all of them are compatible with each other.

Europe uses what is commonly known as PAL: PAL-B, PAL-G and others which are compatrible, forgot the letters.

Here in South America (bah, Argentina, Uruguay and some other countries) we use PAL-N . This  spec is not compatible with PAL-B, therefore you get a black and white signal (and no audio if you connect through RF)

Brazilians seem to use PAL-M, which is not compatible with PAL-B nor PAl-N. Again, black & white picture.

So your Phillips TV more than probably is supporting the PAL mode of your Amiga computer. Keep in mind not all are the same. Euro Amigas output the normal PAL-B/G etc variant. When switched to NTSC, no clue (but there are only two NTSC variants, which are compatible between themselves anyway. NTSC-M and NTSC-J for Japan).
American Amigas which output NTSC and PAL, when switched to PAL, seem to be outputting PAL-M (so says my transcoder )

It's all in how they transmit the color information I guess. Any PAL Amiga might give a black & white picture when switched to NTSC and conencted to an american TV, because the colour info is sent at a frequency NTSC doesn't understand. It's all a mess, I'm not more clued up on teh techy bits about this, but it's kind of how it works.

It's a pain in the botty all this PAL lark, I tell ya!

[Akira]

PAL/SECAM/NTSC are only methods of transmission of UHF I believe, so
they only apply to RF/Composite signals.

Not true, this is a video system and your Amiga outputs this through Composite as well.

The 1084s were made by Phillips, yes , but they DO NOT support ANY PAL mode either. I'm telling you, I have the misfortune to know all this because of personal experience, if you do't live here you don't get a grasp of what  a mess it is with the video systems. Your Philliips TV surely accepts most types of compatioble PAL, and maybe PAL-M at the most, but not ALL, even less PAL-N. Consider yourself lucky anyway, that's one fine TV.