Re: [gpsim-devel] gpsim - PAL Video code fix contribution

[Paul S. <pau...@gm...>]

Hi Roy,

Thanks for your time and interest!

(Adding to the few comments about PAL already seen:..)

Correct: it isn't truly PAL, probably something more like "CCIR 50Hz 625
line interlaced monochrome standard" = original black and white tele in
Australia (and other places).

PAL is really just meaning the 50Hz 625i like B&W as opposed to the 60Hz
NTSC B&W standard.

In fact, the module probably could be modified to automatically do either.

Or add the code to make it do colour :-)  But seeing I don't have enough
bandwidth (pic cpu speed) (or ability to do quadrature amplitude modulating)
with a PIC, I think I'll leave that one for now - I did think about it a few
years ago until I realised I'd need about a 100MHz PIC to do it using the
method I'm using (very basic).

Anyway the module is currently just Black OR White, 50Hz, 625 lines
interlaced video at the moment... I don't even have to bang on the side of
the TV if it starts rolling and gets out of sync. :-)

Paul S.

Paul,
>
> As you have opened a patch ticket, add the diff file as a file to this
> ticket.
>
> BTW from a quick look at the file I could not work aout what it has to
> do with PAL a color encoding standard for TV.
>
> Welcome to Gpsim,
> Roy Rankin
>