Commodore 64 User Manual page 165

FILTER SETTINGS
Location
Contents
54293 Low cutoff frequency (0-7)
54294
High cutoff frequency (0-255)
54295
Resonance (bits 4-7)
Filter voice 3 (bit 2)
Filter voice 2 (bit 1)
Filter voice 1 (bit 0)
54296 High pass (bit 6)
Bandpass (bit 5)
Low pass (bit 4)
Volume (bits 0-3)
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