CompuServe Messages

NB <<recently picked up a couple of colour VGA monitors, I was wondering, is it possible to use them with an A1200. If so what kind of adapter do I require>> You can use a VGA-ONLY monitor with the A1200, but there are some limits. Many games are hardcoded to run in NTSC or PAL modes, preventing them from generating VGA compatible output for a VGA monitor. The AmigaOS special 'promotion' software is unable to intercept these game's video generation and and convert it into VGA modes. You will need a NTSC or PAL monitor to play these games. The default VGA mode (Multiscan) doesn't use the exact VGA scanrates, it slows the scan rate slightly to allow overscanning. Some VGA monitors have no problems with this, while others can not handle the slightly slower rate. The Double-PAL & DOUBLE-NTSC (VGA versions of NTSC & PAL) also scan slower than VGA rates. There is a VGA-ONLY file which can be run during bootup, that adjust the VGA, Double-PAL & Double-NTSC scanrates to more closely match the VGA standard, at a cost to overscanning. To use the VGA monitors, or any multiscan monitor requires an adaptor that converts the Amiga's 23-pin Video port into a 15-pin VGA port. The adaptor made by Commodore also has a buffer chip, although some monitors don't require it. I'm not sure where you can find an adaptor. Ron.