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

[Stephen Shaw <stephen@apple2.org.za>]

I have run American NTSC 525 line Apple IIes on my PAL composite monitor, I
can't see why there'd be a problem vice versa.

On Sat, 09 Jun 2001 14:50:05 GMT, ralmin wrote:

>> 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.

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