@spaceman88
booting an Amiga and changing in the early boot menu (by holding both mouse buttons) from PAL to NTSC or vice versa, will not help. Let me give you the long explanation:
Video signals for television in North America are different from
those used in Europe. North America uses the NTSC system, and most
European countries, as well as many others, use the PAL system. Since
the Amiga uses video-based screen modes, they are made for the different
modes according to the country.
The main differences between the two modes are resolution and frame
rate. NTSC displays have 200 lines vertically, or 400 in interlaced
mode, and displays 29.97 frames (59.94 fields) per second (most people
round it off to 30). PAL uses 256, or 512 interlaced, with a frame rate
of 25 frames per second (50 fields).
If you have the ECS chipset, you can switch your display between the two
modes using the Screenmode Prefs program, in the Prefs drawer. You can
also switch from the default screenmode at boot time with the Early
Startup Menu, which you access by holding down both mouse buttons when
booting.
Some programs, most notably games, which are not fully OS-compliant,
only support one of the modes. Many of the games on Aminet, for example,
are PAL only. If you have an NTSC machine, you will be able to use most,
but not all, of them as long as you have the ECS or AGA chipset and at
least 1 MB of CHIP RAM.
This method of switching to NTSC or PAL modes is only used to make
software work which is designed for the other standard. It's not
sufficient if you want to use an Amiga with hardware video equipment
from the other standard. For this purpose, you would have to rework your
Amiga's motherboard to a high degree, e.g. change the main crystal and
the modulator.
Hope it helps you to understand it!
