CompuServe Thread

A colleague, Thom Sterling (we are both associated with Errex, Inc.), has written a short assembly language Gronnnnk test. The result is that the disk drive step rate can indeed be set by software, with the currently installed rate apparently about one step in 2.5-3 milliseconds. His perception on his system is that the gronk gets pretty quiet at 2.44 ms. When I ran his test on my Amiga, I found that the Gronk pitch certainly changed noticeably, but it did not get any quieter. My system sits on a formica tabletop surrounded by plastic bookcases and vinyl flooring, which tends not to dampen noise. We both agree that the stepping pulse seems to cut off very sharply. It seems to start missing pulses when the rate goes very little above 1 in 2.39 milliseconds. But we have at best mixed evidence that there is any effectively quiet rate. Thom's assembly language source is about 2900 bytes of text, and although quick and dirty, shows a little about timing and interrupts. Should I try to upload it? I say "try", because I have no experience with uploading to a data library as yet.