IBM DTLA-305040 Hard Drive Specifications - Page 120
Option Bit. Indicates that the Option Bit of the Sector Count Register should be specified.
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B Option Bit. Indicates that the Option Bit of the Sector Count Register should be specified. (This bit is used by Set Max Address command) V Valid. Indicates that the bit is part of an output parameter and should be specified. x Indicates that the hex character is not used. - Indicates that the bit is not used. Input Registers 0 Indicates that the bit is always set to zero. 1 Indicates that the bit is always set to one. H Head number. Indicates that the head number part of the Device/Head Register is an input parameter and will be set by the device. V Valid. Indicates that the bit is part of an input parameter and will be set to zero or one by the device. - Indicates that the bit is not part of an input parameter. The command descriptions show the contents of the Status and Error Registers after the device has completed processing the command and has interrupted the host. Deskstar 40GV & 75GXP hard disk drive specifications 108
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