Re: [stella] In the final testing stage (I hope).

Subject: Re: [stella] In the final testing stage (I hope).
From: Eckhard Stolberg <Eckhard_Stolberg@xxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 10 Sep 1998 15:22:12 +0200
At 19:06 09.09.98 -0400, you wrote:

>I'm just curious if all the fine tuning adjustments I've made to the
>program are going to react differently on someone else's machine because
>they have a different power supply or what not. I'm also curious as to
>wether the 50Hz power freaquency of european 2600s will affect in some
>subtle way the timing of the machine.

There were two quartz crystals in the PAL VCS, that I sent to Chris
Wilkson. (Hey Chris, did you already have some time to take a closer
look at it?)

As for PAL/NTSC differences:
The programmers guide says, that PAL does 50 frames with 312 lines
per second, while NTSC does 60 frames with 262 lines. That is a
difference of 120 lines per second. Therefore your program would
loose about 11 minutes per day when run on a PAL VCS. You might
have to write a special PAL version, if that is too much for you.

And if you really care about acuracy, you could try to build a
joystick port connector for a DCF77 receiver, or whatever the
equivalent for that is in Canada. ;-)


Ciao, Eckhard Stolberg



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