Hitachi HDT725025VLA380 Specifications - Page 210
Read Verify Sectors 40h/41h
UPC - 829686001084
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12.27 Read Verify Sectors (40h/41h) Table 116: Read Verify Sectors (40h/41h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count V V V V V V V V Sector Number V V V V V V V V Cylinder Low V V V V V V V V Cylinder High Device/Head V V V V V V V V 1 L 1 D H H H H Command 0 0 1 0 0 0 0 R Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count V V V V V V V V Sector Number V V V V V V V V Cylinder Low V V V V V V V V Cylinder High Device/Head V V V V V V V V - - - - H H H H Status see below 76 CRC UNC 0V Error Register 54 3 2 1 0 0 IDN 0 ABT T0N AMN 0V 0 V 0 0 Status Register 7 654 3 2 1 0 BSY RDY DF DSC DRQ COR IDX ERR 0 V0V - 0 - V The Read Verify Sectors command verifies one or more sectors on the device. No data is transferred to the host. The difference between the Read Sector(s) command and the Read Verify Sector(s) command is whether data is transferred to the host or not. If an uncorrectable error occurs, the read verify will be terminated at the failing sector. Output parameters to the device Sector Count This is the number of continuous sectors to be verified. If zero is specified, 256 sectors will be verified. Sector Number This is the sector number of the first sector to be transferred. (L = 0) In LBA mode this register contains the LBA bits 0-7. (L = 1) Cylinder High/Low This is the cylinder number of the first sector to be transferred. (L = 0) In LBA mode this register contains the LBA bits 8-15 (Low) and bits 16-23 (High). (L = 1) H This is the head number of the first sector to be transferred. (L = 0) In LBA mode this register contains the LBA bits 24-27. (L = 1) R This is the retry bit. this bit is ignored. Input parameters from the device Sector Count This is the number of requested sectors not verified. This number will be zero unless an unrecoverable error occurs. Sector Number This is the sector number of the last transferred sector. (L = 0) In LBA mode this register contains the current LBA bits 0-7. (L = 1) Deskstar T7K500 Hard Disk Drive Specification 196