How do I get Double NTSC to work?

This tutorial is paraphrased from an article in an old online magazine called "Amiga Addict." It details a number of steps that A1200 and A4000 owners can take to fill the screen in Double-NTSC mode.

1) Make sure that the monitor is multiscan, so that it will support all the Amiga modes such as Overscan. You will not be able to use the cheap VGA/SVGA monitors unless all your software runs in the same screenmode as Workbench, allowing the VGAonly driver to be used. This is not very good for games. You can also use a VGA monitor if you have a graphics card.

2) If your monitor has a double-width switch, then make sure it is on.

3) Put your Amiga in Double-NTSC mode and manually adjust the vertical and horizontal controls on the monitor.

4) Execute Overscan in the PREFS drawer and stretch the squares as far as possible. Adjust the monitors' controls again to fill the screen.

5) Try to find a monitor replacement driver or MonED on Aminet or a PD library. However, MonED can cause IRREVERSIBLE damage to your monitor, so be very careful when using it.

6) If you still have borders on the left and right of the screen, try to find a program that contains a border blanker, such as the popular Workbench enhancement program, MultiCX.

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