ataIOPB 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
SInt8	ataPBStatusRegister
SInt8	ataPBErrorRegister
SInt16	ataPBReserved5
UInt32	ataPBLogicalBlockSize
UInt8 *	ataPBBuffer
UInt32	ataPBByteCount
UInt32	ataPBActualTxCount
UInt32	ataPBReserved6
ataTaskFile	ataPBTaskFile
ATAPICmdPacket *	ataPBPacketPtr
SInt16	ataPBReserved7 [6]

Detailed Description

Manager parameter block structure (96 bytes)

Field Documentation

ataPBActualTxCount

UInt32 ataIOPB::ataPBActualTxCount

-->: Data transfer length in bytes

ataPBBuffer

UInt8* ataIOPB::ataPBBuffer

-->: Blind transfer size per interrupt (Logical block size)

ataPBByteCount

UInt32 ataIOPB::ataPBByteCount

-->: Data buffer pointer

ataPBCallbackPtr

ATACallbackUPP ataIOPB::ataPBCallbackPtr

Reserved

ataPBClientPtr1

Ptr ataIOPB::ataPBClientPtr1

-->: Transaction timeout value in msec

ataPBClientPtr2

Ptr ataIOPB::ataPBClientPtr2

Client's storage Ptr 1

ataPBDeviceID

UInt32 ataIOPB::ataPBDeviceID

Reserved

ataPBErrorRegister

SInt8 ataIOPB::ataPBErrorRegister

<–: Last ATA status image

ataPBFlags

UInt16 ataIOPB::ataPBFlags

-->: I/O Timing Class

ataPBFunctionCode

UInt8 ataIOPB::ataPBFunctionCode

<–: Returned result

ataPBIOSpeed

UInt8 ataIOPB::ataPBIOSpeed

-->: Manager Function Code

ataPBLink

ataPBHeader* ataIOPB::ataPBLink

Start of cloned common header ataPBHdr

ataPBLogicalBlockSize

UInt32 ataIOPB::ataPBLogicalBlockSize

Reserved

ataPBPacketPtr

ATAPICmdPacket* ataIOPB::ataPBPacketPtr

<->: Device register images

ataPBQType

UInt16 ataIOPB::ataPBQType

a pointer to the next entry in the queue

ataPBReserved

UInt8 ataIOPB::ataPBReserved

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

ataPBReserved2

Ptr ataIOPB::ataPBReserved2

Reserved

ataPBReserved3

SInt16 ataIOPB::ataPBReserved3

-->: Various control options

ataPBReserved4

SInt32 ataIOPB::ataPBReserved4

Used internally by the manager

ataPBReserved5

SInt16 ataIOPB::ataPBReserved5

<–: Last ATA error image-valid if lsb of Status set

ataPBReserved6

UInt32 ataIOPB::ataPBReserved6

<–: Actual transfer count

ataPBReserved7

SInt16 ataIOPB::ataPBReserved7[6]

-->: ATAPI packet command block pointer (valid with ATAPI bit set)

ataPBResult

OSErr ataIOPB::ataPBResult

-->: Completion Routine Pointer

ataPBSemaphores

UInt16 ataIOPB::ataPBSemaphores

Reserved for Manager; Initialize to 0

ataPBState

UInt16 ataIOPB::ataPBState

Client's storage Ptr 2

ataPBStatusRegister

SInt8 ataIOPB::ataPBStatusRegister

Reserved
End of cloned common header ataPBHdr

ataPBTaskFile

ataTaskFile ataIOPB::ataPBTaskFile

Reserved

ataPBTimeOut

UInt32 ataIOPB::ataPBTimeOut

-->: Device identifier (see ataDeviceID)

ataPBVers

UInt8 ataIOPB::ataPBVers

type byte for safety check

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

• ATA.h