[stella] PAL<->NTSC colors

Subject: [stella] PAL<->NTSC colors
From: Piero Cavina <p.cavina@xxxxxxxxxxxxx>
Date: Mon, 14 Apr 1997 14:40:32 +0200 (METDST)
Eckhard Stolberg wrote:

>Therefore I wrote this little colour test program, COLOUR.BIN.
(...)
>Can EVERYONE with a PAL system PLEASE run this program and send me discriptive
>names for all of the 16 hues, so I can see if mine were correct?

I've finally burned an Eprom in order to run Eckhard test programs.
The description of PAL colours that Eckhard sent some time ago seems quite
accurate - perhaps 'gold' is more 'brown-gold' than 'gold' - but I think
that finding accurate descriptions isn't so important.
Instead, in order to write a multi-standard game, here are some things that
I must understand:

- Is the number of hues the same in PAL and NTSC, or does one of the two TV
standards have more colours?

- How can colors be mapped between the two systems, I mean can I write a
table made of lines like: NTSC X (green) = PAL Y (the same green), or at
least: NTSC X (green) = PAL Z (the PAL green nearest to NTSC green)?


Ciao,
 P.



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