What irq vector does the real time clock trigger, and at what interval? The big reason for my interest in the clock is because i'm interested in making a sound driver for a demo. Could someone perhaps also explain how the wav player program works with the hardware? I haven't checked if the wav player program works without the real time clock, but since i've seen nobody mention this as a limitation, it suggests that the real time clock is not needed for that. If there is a good way to produce sound to the 16 bit covox without the real time clock, i would also be interested in hearing about that. :)