Table 171
+=====-========-========-========-========-========-========-========-========+
| Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|Byte | | | | | | | | |
|=====+========+========+=====================================================|
| 0 | PS |Reserved| Page code (04h) |
|-----+-----------------------------------------------------------------------|
| 1 | Page length (16h) |
|-----+-----------------------------------------------------------------------|
| 2 | (MSB) |
|- - -+--- Number of cylinders ---|
| 4 | (LSB) |
|-----+-----------------------------------------------------------------------|
| 5 | Number of heads |
|-----+-----------------------------------------------------------------------|
| 6 | (MSB) |
|- - -+--- Starting cylinder-write precompensation ---|
| 8 | (LSB) |
|-----+-----------------------------------------------------------------------|
| 9 | (MSB) |
|- - -+--- Starting cylinder-reduced write current ---|
| 11 | (LSB) |
|-----+-----------------------------------------------------------------------|
| 12 | (MSB) |
|-----+--- Drive step rate ---|
| 13 | (LSB) |
|-----+-----------------------------------------------------------------------|
| 14 | (MSB) |
|- - -+--- Landing zone cylinder ---|
| 16 | (LSB) |
|-----+-----------------------------------------------------------------------|
| 17 | Reserved | RPL |
|-----+-----------------------------------------------------------------------|
| 18 | Rotational offset |
|-----+-----------------------------------------------------------------------|
| 19 | Reserved |
|-----+-----------------------------------------------------------------------|
| 20 | (MSB) |
|-----+--- Medium rotation rate ---|
| 21 | (LSB) |
|-----+-----------------------------------------------------------------------|
| 22 | Reserved |
|-----+-----------------------------------------------------------------------|
| 23 | Reserved |
+=============================================================================+