User`s manual

IOT - I/O Configure Disk Controller
3-103
3
Number of Heads =05?
The number of heads on the drive.
Number of Cylinders =0337?
The number of cylinders on the device. For ßoppy disks, the
number of cylinders depends on the media size and the track
density.
Precomp. Cylinder =0000?
The cylinder number at which precompensation should occur
for this drive. This parameter is normally speciÞed by the drive
manufacturer.
Reduced Write Current Cylinder =0000?
The cylinder number at which the write current should be
reduced when writing to the drive. This parameter is normally
speciÞed by the drive manufacturer.
Interleave Factor =00?
The manner in which the sectors are formatted on a track.
Normally, consecutive sectors in a track are numbered
sequentially in increments of 1 (interleave factor of 1). The
interleave factor controls the physical separation of logically
sequential sectors. This physical separation gives the host time
to prepare to read the next logical sector without requiring the
loss of an entire disk revolution.
Spiral Offset =00?
The number of sectors that the Þrst sector of each track is offset
from the index pulse. This is used to reduce latency when
crossing track boundaries.
ECC Data Burst Length =0000?
The number of bits to correct for an ECC error when supported
by the disk controller
Step Rate Code =00?