ataRegAccess Struct Reference

#include <ATA.h>

Data Fields
ataPBHeader *	ataPBLink
UInt16	ataPBQType
UInt8	ataPBVers
UInt8	ataPBReserved
Ptr	ataPBReserved2
ATACallbackUPP	ataPBCallbackPtr
OSErr	ataPBResult
UInt8	ataPBFunctionCode
UInt8	ataPBIOSpeed
UInt16	ataPBFlags
SInt16	ataPBReserved3
UInt32	ataPBDeviceID
UInt32	ataPBTimeOut
Ptr	ataPBClientPtr1
Ptr	ataPBClientPtr2
UInt16	ataPBState
UInt16	ataPBSemaphores
SInt32	ataPBReserved4
UInt16	ataRegSelect
ataRegValueUnion	ataRegValue
UInt16	ataRegMask
ataTaskFile	ataRegisterImage
UInt8	ataAltSDevCReg
UInt8	Reserved3
SInt16	Reserved [16]

Detailed Description

Manager parameter block structure

Field Documentation

ataAltSDevCReg

UInt8 ataRegAccess::ataAltSDevCReg

<->: register images

ataPBCallbackPtr

ATACallbackUPP ataRegAccess::ataPBCallbackPtr

Reserved

ataPBClientPtr1

Ptr ataRegAccess::ataPBClientPtr1

-->: Transaction timeout value in msec

ataPBClientPtr2

Ptr ataRegAccess::ataPBClientPtr2

Client's storage Ptr 1

ataPBDeviceID

UInt32 ataRegAccess::ataPBDeviceID

Reserved

ataPBFlags

UInt16 ataRegAccess::ataPBFlags

-->: I/O Timing Class

ataPBFunctionCode

UInt8 ataRegAccess::ataPBFunctionCode

<–: Returned result

ataPBIOSpeed

UInt8 ataRegAccess::ataPBIOSpeed

-->: Manager Function Code

ataPBLink

ataPBHeader* ataRegAccess::ataPBLink

Start of cloned common header ataPBHdr

ataPBQType

UInt16 ataRegAccess::ataPBQType

a pointer to the next entry in the queue

ataPBReserved

UInt8 ataRegAccess::ataPBReserved

-->: parameter block version number; Must be 0x01

ataPBReserved2

Ptr ataRegAccess::ataPBReserved2

Reserved

ataPBReserved3

SInt16 ataRegAccess::ataPBReserved3

-->: Various control options

ataPBReserved4

SInt32 ataRegAccess::ataPBReserved4

Used internally by the manager

ataPBResult

OSErr ataRegAccess::ataPBResult

-->: Completion Routine Pointer

ataPBSemaphores

UInt16 ataRegAccess::ataPBSemaphores

Reserved for Manager; Initialize to 0

ataPBState

UInt16 ataRegAccess::ataPBState

Client's storage Ptr 2

ataPBTimeOut

UInt32 ataRegAccess::ataPBTimeOut

-->: Device identifier (see ataDeviceID)

ataPBVers

UInt8 ataRegAccess::ataPBVers

type byte for safety check

ataRegisterImage

ataTaskFile ataRegAccess::ataRegisterImage

-->: mask for register(s) to update bit 0 : data register valid bit 1 : error/feaures register valid bit 2 : sector count register valid bit 3 : sector number register valid bit 4 : cylinder low register valid bit 5 : cylinder high register valid bit 6 : ataTFSDH register valid bit 7 : status/command register valid bits 8 - 13 : reserved (set to 0) bit 14: alternate status / device control reg valid bit 15: reserved (set to 0)

ataRegMask

UInt16 ataRegAccess::ataRegMask

Following fields are valid only if ataRegSelect = 0xFFFF

ataRegSelect

UInt16 ataRegAccess::ataRegSelect

Reserved
End of cloned common header ataPBHdr

ataRegValue

ataRegValueUnion ataRegAccess::ataRegValue

-->: Device Register Selector DataReg 0
ErrorReg(R) or FeaturesReg(W) 1 SecCntReg 2 SecNumReg 3 CylLoReg 4 CylHiReg 5 SDHReg 6 StatusReg(R) or CmdReg(W) 7 AltStatus(R) or DevCntr(W) 0E

Reserved

SInt16 ataRegAccess::Reserved[16]

Reserved

Reserved3

UInt8 ataRegAccess::Reserved3

<->: Alternate status(R) or Device Control(W) register image

---

The documentation for this struct was generated from the following file:

• ATA.h