Notch Page (0C H ); Changeable Ffh; Changeable 00 H; Default) Reserved (00 H ) - Seagate MEDALIST 1080SL Product Manual

Medalist 1080sl SCSI Product Manual, August 1995
C.8 Notch page (0C
The Notch page contains parameters that describe the notches. The
table below summarizes the function, default value and the changeability
of each bit.
The drive uses Zone Bit Recording, which means that the outer cylinders
of the disc contain more logical blocks than the inner cylinders. The
cylinders are organized into groups called zones or notches. Every
logical block is part of a notch. Notches do not overlap.
Bytes
7
0 PS (1)
1
2 ND
default 1

changeable

0
3 (default)
changeable
4–5 (default) Maximum number of notches (0013
changeable
6–7 (default)
changeable
8–11 (default)
changeable
12–15 (default)
changeable
16–23 (default) Pages notched (0000000000000008
changeable
Byte 2 The notched drive (ND) bit is always 1.The notch record-
ing densities are not the same size. This page defines the
starting and ending boundaries for each supported, active
notch value.
The logical or physical notch (LPN) bit is 0. The notch
boundaries are based on the physical parameters of the
logical unit. The cylinder is most significant; the head is
least significant.
)
H
Bits
6 5 4 3
Page code (0C
Page length (16
H
LPN Reserved
0 0 0 0
0 0 0 0
Reserved (00 )
H
00
H
0000
H
Active notch (0000
FFFF
H
Starting boundary (00000000
00000000
H
Ending boundary (0012D903
00000000
H
0000000000000000
95
2 1 0
)
H
)
0 0 0
0 0 0
)
H
)
H
)
H
)
H
)
H
H