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V-Tech Precomputer Power Pad Plus The PPPP has an interesting function in BASIC called Sound(). You give it two variables. Frequency (0 to 255) and Duration (0 to 255 clock cycles). sound 110,10 will produce a frequency of 110 Hz for 10 clock cycles. You can write simple little codes which hold specific freq in an array or write code to generate patterns or freq and duration. These are some simple patterns and the Fibonaci sequence was using a data array. Desc sample 0.5 MB 3 times slow, medium, and fast. DescAsc sample 0.5 MB Alternating descending and ascending tones. 2 times fast and then slow. RandSet sample 0.2 MB Random frequency set tempo. 2 times slow and then fast. RandRand sample 0.3 MB Random frequency random tempo. Fibonaci sample 0.3 MB Fibonaci sequence, up to 233, looped a few times. 3 runs - slow, fast, and faster. cappy@sailormouth.org