Hitachi ic35l060avv207-0 - Deskstar 60 GB Hard Drive Specifications page 115

4. When the device has finished processing the command, it sets BSY=0 and interrupts the host.
5. In response to the interrupt, the host reads the Status Register.
6. The device clears the interrupt in response to the Status Register being read.
Deskstar 180GXP hard disk drive specifications
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