The Z89340 is a high-performance, programmable wavetable engine designed for musical instruments, general MIDI (Musical Instrument Digital Interface) sound modules, digital mixing consoles with high-quality PC sound cards, and computer-controlled multimedia applications. This device features a 24-bit address bus for addressing16-bit sample-storage ROM and DRAM (DRAM refresh controller on-board), a 12x16 two's-complement scaler, eight 24-bit accumulators with clipping circuitry, a 2x8x16 interpolator to allow a high resolution of phase angles between input samples, CD-quality sampling rates, and 64 high-speed audio processing units (APUs) that can be split into two low-speed APUs that operate at half the sampling rate, allowing up to 128 notes to play simultaneously. All APUs are independent and can address any part of data storage at any time.