ide.h

#define ATA_SR_BSY  0x80 //busy
#define ATA_SR_DRDY 0x40 //drive ready
#define ATA_SR_DF   0x20 //drive write fault
#define ATA_SR_DSC  0x10 //drive seek complete
#define ATA_SR_DRQ  0x08 //data request ready
#define ATA_SR_CORR 0x04 //corrected data
#define ATA_SR_IDX  0x02 //inlex
#define ATA_SR_ERR  0x01 //error

#define ATA_ER_BBK      0x80 //bad sector
#define ATA_ER_UNC      0x40 //uncorrectable data
#define ATA_ER_MC       0x20 //no media
#define ATA_ER_IDNF     0x10 //ID mark not found
#define ATA_ER_MCR      0x08 //no media
#define ATA_ER_ABRT     0x04 //command aborted
#define ATA_ER_TK0NF    0x02 //track 0 not found
#define ATA_ER_AMNF     0x01 //no address mark

#define ATA_CMD_READ_PIO        0x20 
#define ATA_CMD_READ_PIO_EXT    0x24
#define ATA_CMD_READ_DMA        0xC8
#define ATA_CMD_READ_DMA_EXT    0x25
#define ATA_CMD_WRITE_PIO       0x30
#define ATA_CMD_WRITE_PIO_EXT   0x34
#define ATA_CMD_WRITE_DMA       0xCA
#define ATA_CMD_WRITE_DMA_EXT   0x35
#define ATA_CMD_CACHE_FLUSH     0xE7
#define ATA_CMD_CACHE_FLUSH_EXT 0xEA
#define ATA_CMD_PACKET          0xA0
#define ATA_CMD_IDENTIFY_PACKET 0xA1
#define ATA_CMD_IDENTIFY        0xEC

#define ATAPI_CMD_READ  0xA8
#define ATAPI_CMD_EJECT 0x1B

#define ATA_IDENT_DEVICETYPE            0
#define ATA_IDENT_DEVICETYPE_CYLINDERS  2
#define ATA_IDENT_HEADS                 6
#define ATA_IDENT_SECTORS               12
#define ATA_IDENT_SERIAL                20
#define ATA_IDENT_MODEL                 54
#define ATA_IDENT_CAPABILITIES          98
#define ATA_IDENT_FIELDVALID            106
#define ATA_IDENT_MAX_LBA               120
#define ATA_IDENT_COMMANDSETS           164
#define ATA_IDENT_MAX_LBA_EXT           200

#define IDE_ATA     0x00 
#define IDE_ATAPI   0x01