Re: PAL Colour Card

[david@uow.edu.au (David Wilson)]

Patrick Schaefer <patrick.schaefer@topmail.de> writes:
>Dave Morrison schrieb:
>> Just picked up a PAL Colour Card for my ][e so I can hook it up to my
>> TV (I'm in Australia). Is there a manual for it online?? From what I
>> gather it goes into slot 7 but it just changes the black screen of my
>> TV to a dark green. There are 2 RCA jacks on the card.. one listed
>> "UHF" the other "Video O P".

>Video is baseband video (connect this to a SCART or S-VHS connector),
>UHF means an antenna-compatible RF signal (in most cases Channel 36,
>like a VCR).

Baseband is usually on RCA or BNC connectors. S-VHS is separate Luminance
and Chrominance.

What model //e do you have? The original PAL card was designed for the ][
and ][+ and needs wires attached to pins on the motherboard that the //e
does not have. If you have a beige //e with the Aux slot in line with
slot 3 then you have a PAL motherboard and no need for a PAL card. If you
have a Platinum //e (again with Aux slot in line with Slot 3) then you
have an International NTSC model and would need a special PAL card.

If your //e has the Aux slot on its own then you have an NTSC //e and
would need to replace the IOU chip to get 50Hz vertical refresh rate,
change the main crystal from 14.31818MHz to a slightly lower 14.???
crystal to get the 15.625kHz horizontal retrace rate and then work out
how to connect the PAL card given that the signals it needs are not
available on pins.

Of course, if the PAL card you have is designed for a //e (I have never
seen one but I assume they exist for the Platinum cased late model //e)
then some of the above will not apply.
--
David Wilson  School of IT & CS, Uni of Wollongong, Australia