Msg: 38 *Conference*
05-26-91 23:04:42
From: CHARLES STEPHENS
To : FRANK MCJUNKINS
Subj: REPLY TO MSG #33 (102 INFO)
Frank, The folks at MicroSoft who wrote the ROM in the 102 were too lazy to write a good SOUND routine. The system uses the timer in the 81C55 PPI. This SAME timer that is used for the timing of the serial port so you can't use them at the same time. The routine is called MUSIC and is located at 72C5h. Enter the routine with DE containsing the timer value and B with the duration value. Exit is unchanged. As far as what values to use.... I have a file that contain