Posted By
Bionic
on 2022-02-24
15:06:53
|  Re: Is there such a thing as an interlaced picture for the +4?
Hi Mad/MMS,
Tunnel B1 rings a bell - wasn't Mr. Pet involved in this? Also, I certainly remember the screenmode from Alto Knallo. It was a nice hack at it's time. Today, people will probably guess it is meant to achieve something other than simply increasing the number of colors 
The monitor is a Dell 2001FP, afair, and I just used a Y/C cable. No special tricks. Was a great monitor back then.
I guess apart from increasing the number of lines, one could do many colour tricks by manipulating the PAL signal. Phase inversion surely is an option, I recall that Graham also managed to do that on a C128.
Also, I wonder whether there is any way to fix the color signal when using NTSC timing to improve the horizontal resolution. As long as the burst is correct, everything should be interpreted as a PAL signal. So it's mainly a question of generating something meaningful.
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