diff options
Diffstat (limited to 'sys/i386/isa/sound/sbcard.h')
| -rw-r--r-- | sys/i386/isa/sound/sbcard.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/sys/i386/isa/sound/sbcard.h b/sys/i386/isa/sound/sbcard.h new file mode 100644 index 0000000..464128c --- /dev/null +++ b/sys/i386/isa/sound/sbcard.h @@ -0,0 +1,54 @@ +/* + * file: sbcard.h + */ + +extern int sbc_major, sbc_minor ; +/* + * sound blaster registers + */ + +#define DSP_RESET (sbc_base + 0x6) +#define DSP_READ (sbc_base + 0xA) +#define DSP_WRITE (sbc_base + 0xC) +#define DSP_COMMAND (sbc_base + 0xC) +#define DSP_STATUS (sbc_base + 0xC) +#define DSP_DATA_AVAIL (sbc_base + 0xE) +#define DSP_DATA_AVL16 (sbc_base + 0xF) +#define MIXER_ADDR (sbc_base + 0x4) +#define MIXER_DATA (sbc_base + 0x5) +#define OPL3_LEFT (sbc_base + 0x0) +#define OPL3_RIGHT (sbc_base + 0x2) +#define OPL3_BOTH (sbc_base + 0x8) + +/* + * DSP Commands. There are many, and in many cases they are used explicitly + */ + +#define DSP_CMD_SPKON 0xD1 +#define DSP_CMD_SPKOFF 0xD3 +#define DSP_CMD_DMAON 0xD0 /* ??? the comment says Halt DMA */ +#define DSP_CMD_DMAOFF 0xD4 /* ??? comment says continue dma */ + +#define DSP_CMD_DMAHALT 0xD0 +#define DSP_CMD_TCONST 0x40 /* set time constant */ +#define DSP_CMD_HSSIZE 0x48 /* high speed dma count */ +#define DSP_CMD_HSDAC 0x91 /* high speed dac */ +#define DSP_CMD_HSADC 0x99 /* high speed adc */ +#define DSP_CMD_DAC8 0x14 /* 8-bit dac (dma count) */ +#define DSP_CMD_ADC8 0x24 /* 8-bit adc (dma count) */ + +#define DSP_CMD_GETVER 0xE1 +#define DSP_CMD_GETID 0xE7 /* return id bytes */ + +#if 0 /*** unknown ***/ + +#endif + +#define IMODE_NONE 0 +#define IMODE_OUTPUT PCM_ENABLE_OUTPUT +#define IMODE_INPUT PCM_ENABLE_INPUT +#define IMODE_INIT 3 +#define IMODE_MIDI 4 + +#define NORMAL_MIDI 0 +#define UART_MIDI 1 |
