Deskstar 7K250 Hard Disk Drive Specification
184
12.40 Set Multiple (C9h)
Table 114: Set Multiple command (C6h)
The Set Multiple command enables the device to perform Read and Write Multiple commands and estab-
lishes the block size for these commands. The block size is the number of sectors to be transferred for
each interrupt.
If an invalid block size is specified, an Abort error will be returned to the host. The Read Multiple and
Write Multiple commands will be disabled.
Output parameters to the device
Sector Count
This indicates the block size to be used for the Read Multiple and the Write Multiple com-
mands. Valid block sizes can be selected from 0, 1, 2, 4, 8, or 16. If 0 is specified, then the
Read Multiple and the Write Multiple commands are disabled.
Command Block Output Registers
Command Block Input Registers
Register
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Data
- - - - - - - -
Data
- - - - - - - -
Feature
- - - - - - - -
Error
see below
Sector Count
V V V V V V V V
Sector Count
- - - - - - - -
Sector Number
- - - - - - - -
Sector Number
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder High
- - - - - - - -
Device/Head
1 - 1 D - - - -
Device/Head
- - - - - - - -
Command
1 1 0 0 0 1 1 0
Status
see below
Error Register
Status Register
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
CRC
UNC
0
IDN
0
ABT
T0N
AMN
BSY RDY
DF
DSC
DRQ
COR IDX
ERR
0
0
0
0
0
V
0
0
0
V
0
-
-
0
-
V
Summary of Contents for Deskstar 7K250
Page 2: ......
Page 18: ...Deskstar 7K250 Hard Disk Drive Specification 4 ...
Page 20: ...Deskstar 7K250 Hard Disk Drive Specification 6 ...
Page 21: ...Deskstar 7K250 Hard Disk Drive specification 7 Part 1 Functional specification ...
Page 22: ...Deskstar 7K250 Hard Disk Drive Specification 8 ...
Page 24: ...Deskstar 7K250 Hard Disk Drive Specification 10 ...
Page 36: ...Deskstar 7K250 Hard Disk Drive Specification 22 ...
Page 56: ...Deskstar 7K250 Hard Disk Drive Specification 42 ...
Page 75: ...Deskstar 7K250 Hard Disk Drive Specification 61 Part 2 Interface specification ...
Page 76: ...Deskstar 7K250 Hard Disk Drive Specification 62 ...
Page 78: ...Deskstar 7K250 Hard Disk Drive Specification 64 ...
Page 86: ...Deskstar 7K250 Hard Disk Drive Specification 72 ...
Page 112: ...Deskstar 7K250 Hard Disk Drive Specification 98 ...