Post by Linards Ticmanis
some time ago somebody around here mentioned an "International NTSC"
Apple IIe motherboard among other board revisions. My question is, what
is this board like? Can it be used in conjunction with a PAL IIe
housing, and can it make use of the keyboard/character set switch of
those machines? The reason I'm asking is because around here most
equipment is now multinorm anyway and Apple NTSC graphics look better
than PAL for most things.
This was the final revision Apple IIe board as used in the platinum
IIe's shipped internationally. Functionally, it's much the same as its
predecessor international board; has the aux slot inline with slot 3,
the charset switch, runs at 50hz refresh instead of 60hz. Platinum
also have the 'shift key mod' installed (so pressing shift triggers
have superfluous circuitry in the game connector, and can lock up if
accidentally press a button on an attached joystick and one of the
keys at the same time.
Personally, I've never been satisfied with the PAL output of the
international board; the colours were just plain wrong. In Australia,
machines sold with Colour monitors also included an interested extended
80 column card which had a really nice PAL output on it, which even
suppressed the fringe effect.
Remember that if you use that board, you'll be getting a 50hz video
instead of 60. In my experience, multistandard monitors/tv's tend to
recognise this signal as NTSC and will give you monochrome output (The
same phenomena is present in the IIc, and in the IIgs running in 50hz
on it's composite output), with the exception of the Apple Color
which was specially designed to handle these signals.
My own IIe is fitted with a platinum edition US issue motherboard,
because I wanted to regain slot 3 for other purposes. Doing this loses
access to the charset switch, but other than that is a nice upgrade,
have additional room for cards. If you're planning on using a standard
capable monitor/tv for display, I'd import one of those from the US
be able to get one for $5 or so on ebay - I did). And if the switch is
important to you, grab one of Bill Garbers switchable character ROM
boards ($15 from memory) to gain that functionality back.
Alternatively you'll find the board you refer to in a platinum IIe
dont be surprised if you can't generate a colour output on your