User manual

Hitachi hard disk drive specifications

Implementation note for Background Operation (Function code = 0001h, 0002h)

In this mode, the drive will return command completion status when the drive finished receiving data.

Any command, including IDENTIFY DEVICE, other than SCT Status, issued to the drive while this command is

in progress will terminate the SCT Write Same command. The incoming command is executed.

Use the SCT Status command to retrieve status information about the current SCT command. Example status

information includes: command active or complete, current LBA, and errors. When this command is in progress,

the SCT status error code will be FFFFh, and set to 0000h if the command completes without error. It will be less

than FFFFh and grater the 0000h if the command terminated prematurely for any reason.

Possible Extended Status Code for Background Operation (Function code = 0001h, 0002h)

0008h

Background SCT command was aborted because of an interrupting host command

0009h

Background SCT command was terminated because of unrecoverable error

FFFFh

SCT command executing in background

Implementation note for Blocking Operation (Function code = 0101h, 0102h)

In this mode, the drive will return command completion status when the drive finished the SCT Write Same

operation.

Outputs for Error

Command Block Input Registers (Error)

Error

04h

Sector Count

Extended Status code

(LSB)

Sector Number

Extended Status code

(MSB)

Cylinder Low

N/A

Cylinder High

N/A

Device/Head

Status

51h

Possible Extended Status Code for Blocking Operation (Function code = 0101h, 0102h)

0017h

Blocking SCT Write Same command was terminated because of unrecoverable

error