Re: No colour video from Apple II Europlus

["mdj" <mdj.mdj@gmail.com>]

Kallikak wrote:
> Yes,
>
> It seems that Tom is right, and the NTSC hack that gives colour smiply
> doesn't work with PAL, and the Europlus PAL adjustment is really only
> an adjustment of the frequency down to 50Hz.

It should be noted that this applies to all Apple II models, not just
the II/II+. No Apple II can produce a correct PAL signal straight from
the motherboard

The only model that even attempts it is the european beige IIe. The
composite out on this motherboard produces a 50Hz signal that displays
colour, but when this output is connected to the AppleColour Composite
display, the colours come out all 'wrong'

To get around this, in the Australian market a modified version of the
extended 80 column card was produced that output an excellent PAL
signal. It was even 'fringe free' ! This card was the reason that the
auxiliary slot is relocated on european IIe's to be inline with slot 3.
A major annoyance to IIe power users. The circuitry on this card is
very similar to what's contained in the IIc RF modulator, sans
modulator.

The platinum european IIe outputs 50Hz NTSC, just like every other
european Apple II. The colour cards still work in these machines but
became unavailable because the AppleColour Composite display is capable
of producing the correct colours when fed a 50Hz NTSC signal.

Of course, the IIgs can be switched between 50 and 60hz operation by
holding down the option key during power on.

I've never tried one of the original PAL cards in a IIe or a IIgs to
determine if the signals are even present on the slot; they were only
present on slot 7 in the original Apple II anyway. If it works, it's
probably the only way to generate a PAL signal from a IIgs using
standard components.

Matt