IDEREGISTERS structure (irb.h)

The IDEREGISTERS structure is used to report the contents of the IDE controller registers.

Note  The ATA port driver and ATA miniport driver models may be altered or unavailable in the future. Instead, we recommend using the Storport driver and Storport miniport driver models.

 

Syntax

typedef struct _IDEREGISTERS {
  UCHAR bFeaturesReg;
  UCHAR bSectorCountReg;
  UCHAR bSectorNumberReg;
  UCHAR bCylLowReg;
  UCHAR bCylHighReg;
  UCHAR bDriveHeadReg;
  UCHAR bCommandReg;
  UCHAR bReserved;
} IDEREGISTERS, *PIDEREGISTERS;

Members

bFeaturesReg

Specifies the contents of the ATA features register.

bSectorCountReg

Specifies the contents of the ATA Sector Count register.

bSectorNumberReg

Specifies the contents of the ATA Sector Number register.

bCylLowReg

Specifies the contents of the ATA Cylinder Low register.

bCylHighReg

Specifies the contents of the ATA Cylinder High register.

bDriveHeadReg

Specifies the contents of the ATA Device/Head register.

bCommandReg

Specifies the contents of the ATA Command register.

bReserved

Reserved for future use. The miniport driver shall not use this field.

Remarks

The information reported in the IDEREGISTERS structure is intended to be a superset of the information contained in IDEREGS. Microsoft might expand the contents of the IDEREGISTERS structure in the future. If you need a structure whose size is stable across different versions of the operating system, you should use IDEREGS.

Requirements

Requirement	Value
Header	irb.h (include Irb.h)

See also

IDEREGS