55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
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/*
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* file: sbcard.h
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*/
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extern int sbc_major, sbc_minor ;
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/*
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* sound blaster registers
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*/
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#define DSP_RESET (sbc_base + 0x6)
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#define DSP_READ (sbc_base + 0xA)
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#define DSP_WRITE (sbc_base + 0xC)
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#define DSP_COMMAND (sbc_base + 0xC)
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#define DSP_STATUS (sbc_base + 0xC)
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#define DSP_DATA_AVAIL (sbc_base + 0xE)
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#define DSP_DATA_AVL16 (sbc_base + 0xF)
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#define MIXER_ADDR (sbc_base + 0x4)
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#define MIXER_DATA (sbc_base + 0x5)
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#define OPL3_LEFT (sbc_base + 0x0)
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#define OPL3_RIGHT (sbc_base + 0x2)
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#define OPL3_BOTH (sbc_base + 0x8)
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/*
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* DSP Commands. There are many, and in many cases they are used explicitly
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*/
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#define DSP_CMD_SPKON 0xD1
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#define DSP_CMD_SPKOFF 0xD3
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#define DSP_CMD_DMAON 0xD0 /* ??? the comment says Halt DMA */
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#define DSP_CMD_DMAOFF 0xD4 /* ??? comment says continue dma */
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#define DSP_CMD_DMAHALT 0xD0
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#define DSP_CMD_TCONST 0x40 /* set time constant */
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#define DSP_CMD_HSSIZE 0x48 /* high speed dma count */
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#define DSP_CMD_HSDAC 0x91 /* high speed dac */
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#define DSP_CMD_HSADC 0x99 /* high speed adc */
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#define DSP_CMD_DAC8 0x14 /* 8-bit dac (dma count) */
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#define DSP_CMD_ADC8 0x24 /* 8-bit adc (dma count) */
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#define DSP_CMD_GETVER 0xE1
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#define DSP_CMD_GETID 0xE7 /* return id bytes */
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#if 0 /*** unknown ***/
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#endif
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#define IMODE_NONE 0
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#define IMODE_OUTPUT PCM_ENABLE_OUTPUT
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#define IMODE_INPUT PCM_ENABLE_INPUT
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#define IMODE_INIT 3
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#define IMODE_MIDI 4
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#define NORMAL_MIDI 0
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#define UART_MIDI 1
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