Re: Can the IIgs output colour on its composite monitor output?

["ralmin" <xbiber@bigpond.net.au>]

> I see from later in this thread that the IIgs actually is outputting
> PAL.  The existence of a PAL version is news to me.

And to me, but it appears to be so.

David Wilson says "It should be easy to identify these systems as the color
generator chip was removed and a small daughterboard put in its place." but
I can't see any daughterboard. Perhaps a daughterboard was used for ROM 1
systems but for the ROM 3 it was integrated into the motherboard?

Do you know where on the board I could check for this, or just check whether
I really have a modified IIgs?

> I was able to dig out one of the IIgs machines I have here (a ROM 3
> given to me by a friend, which was purchased in New Zealand) and try it
> on my TV, but the end result wasn't conclusive because my TV supports
> both PAL and NTSC input, with a selector to force PAL or to auto detect.
> If I tell it to use PAL mode, it shows black and white, with occasional
> flashes of colour (I get the same behaviour if I connect an NTSC-only
> IIc to this TV).  If I tell it to autodetect the mode then it always
> shows colour.

I'm fairly sure this TV is not capable of displaying NTSC colour. It
displays black and white when fed from that IIe, but colour from my IIgs.

> - The Monochrome/colour setting in the control panel must be set to
> colour in order to enable colour composite output.  (It has no effect on
> the RGB output.)

Yes, I find the monochrome setting has nicely shaded areas instead of the
stripes you see when displaying colour without a colour screen.

> - If displaying a text-only screen, the IIgs always displays monochrome
> on the composite output.  You must be displaying a graphics mode
> (lo-res, hi-res or super hi-res) to get any colour.  (Split screen
> lo-res or hi-res with four lines of text will have coloured text on the
> composite output, assuming colour output is enabled.)

When in GR or HGR mode I get a blue border, blue background on the four
lines of text, but black background in the graphics area.

How can I change the background or border colour from Applesoft?

Simon.