IBM IC25N020ATDA04 - Travelstar 20 GB Hard Drive Specifications page 120

f. The device clears the interrupt in response to the Status Register being read.
The Write Multiple command transfers one block of data for each interrupt. The other commands transfer
one sector of data for each interrupt.
If the device detects an invalid parameter, then it will abort the command by setting BSY = 0, ERR = 1,
ABT = 1, and interrupting the host.
If an uncorrectable error occurs, the device will set BSY = 0 and ERR = 1, store the error status in the
Error Register, and interrupt the host. The registers will contain the location of the sector in error. The
error location will be reported with CHS mode or LBA mode. The mode is decided by the mode select bit
(bit 6) of the Device/Head register on issuing the command.
All data transfers to the host through the Data Register are 16 bits. The ECC bytes are an exception
having only 8 bits.
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
106