Re: Apple2--

[Steve Leahy <Steve.Leahy@anu.edu.au>]

> The clocks rates used, and the way hi-res graphics (especially)
> was made up meant that we had a special version just for PAL 

Apple used to manufacture two different versions of the various
members of the ][ family; one had NTSC video (mainly for the US
market), and the other had PAL support (for Australia, New Zealand,
Western Europe etc). The design of the motherboard differed which
was how you could tell which version you had. This is also the
reason why Rev. A //es sold in Australia and Europe could do DHR
graphics, but those sold in the US couldn't.

Of course, this was to support a composite video monitor, not a
TV set, so you still had to get a converter of some sort. However,
as the underlying signal to the converter would be different
depending on whether your motherboard had PAL or NTSC support,
you'll still have to be careful. I know they had TV converters
for PAL ][s (in fact Apple used to supply one with the //c),
and no doubt they had converters for NTSC ][s, but whether anybody
ever made a converter to allow an NTSC ][ to output to a PAL TV is
a mystery to me (although I doubt such a device was ever designed,
as the demand for it would be minimal).

If you need help in identifying your motherboard, send me an
e-mail message.

-----------
Steve Leahy
Dept. Geography, Australian National University 0200 Australia
e-mail: Steve.Leahy@anu.edu.au     
WWW: http://della.anu.edu.au