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EPROM Function generator

The output waveform is changed by selecting differet locations in EPROM memory
Eash waveform is 256 locations long and the analoque resolution is 8 bit
This gives an clock over-sampling at 256 !!
Wave forms: Sine, Saw-tooth, triangle, Square, Noice

The powersupply needs negative supply for the op-amp, So I have added a small switch mode supply block
The idea for this generator was my EPROM programmer and my EPROM sound player