Parameter Data Format
5.1.4 Drive Parameters (Page Code = 4)The page descriptor format of this MODE SELECT parameter is shown in Table
5.6.
Table 5.6 MODE SELECT parameters: drive parameters
Bit
Byte 7 6 5 4 3 2 1 0
0 0 0 0 0 0 1 0 0
1 X'16' (Page Length)
2-4 Cylinder Count
Default X'xxxxxx'
Variable X'000000'
5 Number of Heads
Default X'xx'
Variable X'00'
6-8 "Write Precompensation" Starting Cylinder
Default X'000000'
Variable X'000000'
9-11 "Reduced Write Current" Starting Cylinder
Default X'000000'
Variable X'000000'
12-13 Drive Step Rate
Default X'0000'
Variable X'0000'
14-16 Landing Zone Cylinder
Default X'000000'
Variable X'000000'
17 0 0 0 0 0 0 RPL
Default 0 0 0 0 0 0 0 0
Variable 0 0 0 0 0 0 0 0
18 Rotational Synchronization Offset
Default X'00'
Variable X'00'
19 X'00' (Reserved)
20-21 Rotational Speed
Default X'2729' (10,025 rpm)
or
X'3A98' (15,000 rpm)
Variable X'0000'
22-23 X'0000' (Reserved)