IBM DTLA-305040 Hard Drive Specifications - Page 145

In LBA mode this register contains current LBA bits 24-27. L=1

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H The head number of the sector to be transferred. (L=0) In LBA mode this register contains LBA bits 24-27. (L=1) R The retry bit. If set to one, then retries are disabled. Input parameters from the device Sector Count The number of requested sectors not transferred. Sector Number The sector number of the transferred sector. (L=0) In LBA mode this register contains current LBA bits 0 - 7. (L=1) Cylinder High/Low The cylinder number of the transferred sector. (L=0) In LBA mode this register contains current LBA bits 8 - 15 (Low), 16 - 23 (High). (L=1) H The head number of the transferred sector. (L=0) In LBA mode this register contains current LBA bits 24-27. (L=1) It should be noted that the device internally uses 40 bytes of ECC data on all data written or read from the disk. The 4 byte mode of operation is provided via an emulation. Use of the 40 byte ECC mode is recommended for testing the effectiveness and integrity of the ECC functions of the device. Deskstar 40GV & 75GXP hard disk drive specifications 133

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H
The head number of the sector to be transferred. (L=0)
In LBA mode this register contains LBA bits 24-27. (L=1)
R
The retry bit. If set to one, then retries are disabled.
Input parameters from the device
Sector Count
The number of requested sectors not transferred.
Sector Number
The sector number of the transferred sector. (L=0)
In LBA mode this register contains current LBA bits 0 - 7. (L=1)
Cylinder High/Low
The cylinder number of the transferred sector. (L=0)
In LBA mode this register contains current LBA bits 8 - 15 (Low), 16 - 23 (High).
(L=1)
H
The head number of the transferred sector. (L=0)
In LBA mode this register contains current LBA bits 24-27. (L=1)
It should be noted that the device internally uses 40 bytes of ECC data on all data written or read from
the disk. The 4 byte mode of operation is provided via an emulation. Use of the 40 byte ECC mode is re-
commended for testing the effectiveness and integrity of the ECC functions of the device.
Deskstar 40GV & 75GXP hard disk drive specifications
133