Specifications

6-2 DSP Commands
Commands by Category
The table below categorize the commands according to their functionalities.
The commands below are available for DSP versions 1.xx, 2.00, 2.01+, 3.xx and 4.xx.
Category Cmd# Description
8-bit direct mode digitized sound 10h Output
I/O 20h Input
Transfer time constant 40h Set digitized sound transfer time constant
8-bit single-cycle DMA mode 14h Output
digitized sound I/O 24h Input
74h 8-bit to 4-bit ADPCM output
75h 8-bit to 4-bit ADPCM output with ref. byte
76h 8-bit to 3-bit ADPCM output
77h 8-bit to 3-bit ADPCM output with ref. byte
16h 8-bit to 2-bit ADPCM output
17h 8-bit to 2-bit ADPCM output with ref. byte
8-bit DMA mode digitized
sound
D0h Pause DMA mode
I/O control D4h Continue DMA mode
Digitized sound output speaker D1h Turn on speaker
control D3h Turn off speaker
MIDI I/O 30h Polling mode input
31h Interrupt mode input
38h Output
Miscellaneous 80h Pause digitized sound output for a duration
E1h Get DSP version number