I have a problem, I do program:
The program simulates piano in range two scale (24 halftone). Clock frequency sound with two scale (for example: 130 Hz). Sounds begin to be generated when the key is pressed (for example: sound 60Hz - key "A"). Sound generation is complete after about 1/2 second (use breaking IRQ0). Interrupt play by pressing - key "1".
I have a program that simulates the sounds without pressing key.
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