Travelstar 80GN Hard Disk Drive Specification
159
13.36 Set Multiple (C9h)
Table 110: Set Multiple command (C6h)
The Set Multiple command enables the device to perform Read and Write Multiple commands and establishes the
block size for these commands. The block size is the number of sectors to be transferred for each interrupt.
The default block size after power up or hard reset is 0. The Read Multiple and Write Multiple commands are dis-
abled.
If an invalid block size is specified, an Abort error will be returned to the host. The Read Multiple and Write Mul-
tiple 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, 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
- - - - - - - -
LBA Low
- - - - - - - -
LBA Low
- - - - - - - -
LBA Mid
- - - - - - - -
LBA Mid
- - - - - - - -
LBA High
- - - - - - - -
LBA High
- - - - - - - -
Device
1 - 1 D - - - -
Device
- - - - - - - -
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
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