Re: Looking for (internal) Keyboard cable for the US //e

[heuser.marcus@freenet.de]

On Jul 3, 8:57 pm, Linards Ticmanis <ticma...@gmx.de> wrote:
>
> I would second that. It works very well. I can't comment on the Bill
> Garber adapter as I built my own (for an EPROM, not for a Apple ROM).

I helped Bill with the schematics a little bit so in a way I'm
using my own adapter, too ;-)

> The font for the "US half" of the German video ROM is indeed identical
> to the original US Apple font by the way. Since I found the original
> Apple Umlauts ugly and badly designed I decided to use an EPROM with my
> own Umlauts in it.

Bill's adapter also works with EPROMs as a IIe mainboard works
with them (AFAIK the II and II+ mainboards can't use EPROMs
that easily or need special ones - I'm not sure).

> Not only are the colors and aspect ratio improved, also the beat
> (=Schwebung) from the interference of the two quartzes is gone, since
> there is only one quartz on the US mainboard.

Is this the phenomenon where faint diagonal lines/waves wander
back and forth across the screen?

In fact I only know of two advantages of a PAL mainboard
besides the ability to generate colors on a non-NTSC-capable
monitor/TV-set:

a) Some programs which were designed with it in mind do
draw perfectly round circles with it - while with a NTSC
mainboard the circles get stretched to ovals.
Of course this works the other way round, too, and if the
source code is available it can be adapted.

b) In mixed graphics modes the text in the four line text window
at the bottom of the screen doesn't appear tinted green and
magenta like with US mainboards. This is really an improvement
as the text looks much clearer.

bye
Marcus