Creative SB0350 Hardware Programming Guide - Page 88
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DSP Commands 6-3 The commands below are available on DSP versions 2.00, 2.01+, 3.xx and 4.xx. Category 8-bit auto-init DMA mode digitized sound I/O Cmd# 1Ch 2Ch 7Dh 7Fh 1Fh DAh Block transfer size UART mode MIDI I/O 48h 34h 35h 36h 37h Digitized sound output speaker control D8h Description Output Input 8-bit to 4-bit ADPCM output with ref. byte 8-bit to 3-bit ADPCM output with ref. byte 8-bit to 2-bit ADPCM output with ref. byte Exit 8-bit auto-init DMA-mode Set block transfer size Polling mode Interrupt mode Polling with time stamping Interrupt with time stamping Get speaker status The commands below are available on DSP versions 2.01+ and 3.xx. Category High-speed mode digitized sound I/O Cmd# 90h 98h 91h 99h Description 8-bit auto-init DMA mode output 8-bit auto-init DMA mode input 8-bit single-cycle DMA mode output 8-bit single-cycle DMA mode input