Hitachi 7K100 Hard Drive Specifications - Page 138
Read Log Ext 2Fh
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13.15 Read Log Ext (2Fh) Table 81: Read Log Ext Command (2Fh) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Low Data High Current Feature Previous Sector Count Current Previous V V V V V V V V V V V V V V V V Sector Number Current Previous V V V V V V V V Cylinder Current Low Previous V V V V V V V V V V V V V V V V Cylinder Current High Previous Device/Head 1 - 1 0 - - - - Command 0 0 1 0 1 1 1 1 76 CRC UNC 0V Error Register 54 3 2 1 0 0 IDN 0 ABT T0N AMN 0V 0 V 0 0 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Low Data High Error see below Sector Count HOB=0 HOB=1 Sector Number HOB=0 HOB=1 Cylinder HOB=0 Low HOB=1 Cylinder HOB=0 High HOB=1 Device/Head Status See below ... Status Register 7 654 3 2 1 0 BSY RDY DF DSC DRQ COR IDX ERR 0 V0V - 0 - V This command returns the specified log to the host. The device shall interrupt for each DRQ block transferred. Output parameters to the device Sector Count Current The number of sectors to be read from the specified log low order, bits (7:0). The log transferred by the drive shall start at the sector in the specified log at the specified offset, regardless of the sector count requested. Sector Number Previous The number of sectors to be read from the specified log high orders, bits (15:8). Sector Number Current The log to be returned as described in the figure below. Cylinder Low Current The first sector of the log to be read low order, bits (7:0). Cylinder Low Previous The first sector of the log to be read high order, bits (15:8). Travelstar 7K100 Hard Disk Drive Specification 124