Creative SB0350 Hardware Programming Guide - Page 109

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6-24 DSP Commands Cxh Output Remarks Program 8-bit DMA mode digitized sound I/O bCommand, bMode, wLength.LowByte, wLength.HighByte Except for the high nibble being changed to 1100 binary, the bCommand byte is organized identically as in command Bxh. The bMode byte is organized exactly as in command Bxh. For minimum signal amplitude, the signed 8-bit value is 00h; with unsigned data, the equivalent value is 80h. wLength is a word giving the number of 8-bit samples less 1. See Also command Bxh, Program 16-bit DMA mode digitized sound I/O on common details command D0h, Pause 8-bit DMA mode digitized sound I/O command D4h, Continue 8-bit DMA mode digitized sound I/O command DAh, Exit 8-bit auto-init DMA mode digitized sound I/O 1.xx 2.00 2.01+ 3.xx 4.xx 9 Available D0h Output Remarks D0h Pause 8-bit DMA mode digitized sound I/O After receiving this command, the DSP will cease to send out DMA requests. Applicable to both single-cycle and auto-init DMA modes. command D4h, Continue 8-bit DMA mode digitized sound I/O 1.xx 9 2.00 9 2.01+ 9 3.xx 9 4.xx 9 See Also Available

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6-24
DSP Commands
C
x
h
Program 8-bit DMA mode digitized sound I/O
Output
bCommand, bMode, wLength.LowByte, wLength.HighByte
Remarks
Except for the high nibble being changed to 1100 binary, the
bCommand
byte is
organized identically as in command
B
x
h
.
The
bMode
byte is organized exactly as in command
B
x
h
.
For minimum signal amplitude, the signed 8-bit value is 00h; with unsigned data, the
equivalent value is 80h.
wLength
is a word giving the number of 8-bit samples less 1.
See Also
command
B
x
h
, Program 16-bit DMA mode digitized sound I/O on common details
command
D0h
, Pause 8-bit DMA mode digitized sound I/O
command
D4h
, Continue 8-bit DMA mode digitized sound I/O
command
DAh
, Exit 8-bit auto-init DMA mode digitized sound I/O
Available
1.xx
2.00
2.01+
3.xx
4.xx
9
D0h
Pause 8-bit DMA mode digitized sound I/O
Output
D0h
Remarks
After receiving this command, the DSP will cease to send out DMA requests.
Applicable to both single-cycle and auto-init DMA modes.
See Also
command
D4h
, Continue 8-bit DMA mode digitized sound I/O
Available
1.xx
2.00
2.01+
3.xx
4.xx
9
9
9
9
9