chris.todd@gmail.com wrote:
An interesting anomaly - the pitch of the "beep" on the Laser 128 using the EX/2 ROM changed along with the speed setting (normal, medium, fast) in the control panel and by doing the ctrl-(1..3)-reset key combination.. Of course, the system's speed didn't actually change. Interesting, though, because I always thought the EX and EX/ 2's 'beep pitch' change according to speed was actually due to the CPU speed. Looks like it's artificial.
They probably chose new "notes" for the beep that would be distinct but still about the same duration and recognizably "beeps". If the regular 1kHz beep routine is run at accelerated speed, it begins to sound like a short, high pitched "cheep". -michael ******** Note new website URL ******** NadaNet and AppleCrate II for Apple II parallel computing! Home page: http://home.comcast.net/~mjmahon/ "The wastebasket is our most important design tool--and it's seriously underused."