IBM DTLA-305040 - Deskstar 41.1 GB Hard Drive Specifications page 143

Input parameters from the device on bus release
Sector Count
Sector Number, Cylinder High/low, H n/a.
SRV
Input parameters from the device on command complete
Sector Count
Sector Number, Cylinder High/Low, H
SRV
bits 7 - 3 (Tag) contain the Tag of the command being bus released.
bit 2 (REL) is set to one.
bit 1 (I/O) is cleared to zero.
bit 0 (C/D) is cleared to zero.
cleared to zero when the device performs a bus release. This bit is set to one
when the device is ready to transfer data.
bits 7 - 3 (Tag) contain the Tag of the completed command.
bit 2 (REL) is cleared to zero.
bit 1 (I/O) is set to one.
bit 0 (C/D) is set to one.
sector address of unrecoverable error (applicable only when an unrecoverable
error has occurred.)
cleared to zero.
Deskstar 40GV & 75GXP hard disk drive specifications
131