maestro.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:1k
- /*
- * Registers for the ESS PCI cards
- */
-
- /*
- * Memory access
- */
-
- #define ESS_MEM_DATA 0x00
- #define ESS_MEM_INDEX 0x02
- /*
- * AC-97 Codec port. Delay 1uS after each write. This is used to
- * talk AC-97 (see intel.com). Write data then register.
- */
-
- #define ESS_AC97_INDEX 0x30 /* byte wide */
- #define ESS_AC97_DATA 0x32
- /*
- * Reading is a bit different. You write register|0x80 to ubdex
- * delay 1uS poll the low bit of index, when it clears read the
- * data value.
- */
- /*
- * Control port. Not yet fully understood
- * The value 0xC090 gets loaded to it then 0x0000 and 0x2800
- * to the data port. Then after 4uS the value 0x300 is written
- */
-
- #define RING_BUS_CTRL_L 0x34
- #define RING_BUS_CTRL_H 0x36
- /*
- * This is also used during setup. The value 0x17 is written to it
- */
-
- #define ESS_SETUP_18 0x18
- /*
- * And this one gets 0x000b
- */
-
- #define ESS_SETUP_A2 0xA2
- /*
- * And this 0x0000
- */
-
- #define ESS_SETUP_A4 0xA4
- #define ESS_SETUP_A6 0xA6
- /*
- * Stuff to do with Harpo - the wave stuff
- */
-
- #define ESS_WAVETABLE_SIZE 0x14
- #define ESS_WAVETABLE_2M 0xA180