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Parameter Data Formats
4 - 18 C141-E167
Bit
Byte
76543210
0 00000100
1 X‘16’, X‘12’ or X‘0A’ (Page Length)
2-4 Cylinder Count
Default X‘00xxxx’
Variable X‘000000’
5 Number of Heads
Default X‘00xx’
Variable X‘0000’
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 000000 RPL
Default00000000
Variable00000000
18 Rotational Synchronization Offset
Default X‘00’
Variable X‘00’
19 X‘00’ (Reserved)
20-21 Rotational Speed
Default X’2729’ or X’3A98’
Variable X‘0000’
22-23 X‘0000’ (Reserved)
Figure 4.4 MODE SELECT parameters: drive parameters
Note:
When transfer of this page is requested by the MODE SENSE or MODE SENSE EXTENDED
command, the IDD reports X '16' as the page length. However, in the MODE SELECT and
MODE SELECT EXTENDED commands, if either X '16,' X '12' or X '0A' is specified, it is
treated as if the IDD has specified the correct page length. The X '12' and X '0A' page lengths
have been included in consideration of compatibility with previous models, but it is
recommended that the INIT use the X '16' page length to support expanded specifications in the
future.
(See the
"Note")
(10,025 rpm or
15,000 rpm)