Quick FM capability test

List - I needed a quick way to sort out which PC's had reliable FM/single density capability, so I put together a little utility (<14K), testsd.exe: http://www.sydex.com/download/testsd.exe No command line arguments; it searches for the first 1.44MB-capable 3.5" drive (usually A:) and prompts for a diskette insertion. After a keypress is given, cylinders 74-79 of the diskette are formatted in 2/16/256 single-density, written with a test pattern and read back. If any errors crop up, you've either got a bad diskette or the controller setup doesn't support FM recording. Note that reading alone isn't good enough--some controllers support reading, but not writing FM data. I make a DOS boot diskette and include this program on it and invoke it the number of modern mobos that have FM support on them. This little utility also supports secondary controllers and DISKETTE.CFG files, so one could dummy a configuration file up to test only secondary controllers, I imagine. Enjoy, Chuck