Write Multiple (C5H); Table 162.Write Multiple (C5H) - Hitachi 7K80 - Deskstar - Hard Drive Specifications

12.50 Write Multiple (C5h)

Table 163: Write Multiple (C5h)
Command Block Output Registers
Register
Data
Feature
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
Error Register
7 6 5
CRC UNC 0 IDN
0 0 0
The Write Multiple command transfers one or more sectors from the host to the device. The data is then written to
the disk media.
Command execution is identical to the Write Sectors command except that an interrupt is generated for each block
as defined by the Set Multiple command instead of for each sector. The sectors are transferred through the Data
Register 16 bits at a time.
Output parameters to the device
Sector Count
Sector Number
Cylinder High/Low
H
Input parameters from the device
Sector Count
Sector Number
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
1 L 1 D H H H H
1 1 0 0 0 1 0 1
4 3 2 1
0 ABT T0N AMN
V 0 V 0
This indicates the number of continuous sectors to be transferred. If the Sector Count of
zero is specified, 256 sectors will be transferred.
This indicates the sector number of the first sector to be transferred. (L = 0)
In LBA mode this register contains the LBA bits 0–7. (L = 1)
This indicates the cylinder number of the first sector to be transferred. (L = 0)
In LBA mode this register contains the LBA bits 8–15 (Low) and bits 16–23 (High).
(L = 1)
This indicates the head number of the first sector to be transferred. (L = 0)
In LBA mode this register contains the LBA bits 24–27. (L = 1)
This indicates the number of requested sectors not transferred. The Sector Count will be
zero, unless an unrecoverable error occurs.
This indicates the sector number of the last transferred sector. (L = 0)
In LBA mode this register contains current the LBA bits 0–7. (L = 1)
Deskstar 7K80 Hard Disk Drive Specification
Command Block Input Registers
Register
Data
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
0 7 6 5
BSY RDY DF DSC DRQ
0 0 V 0
233
7 6 5 4 3 2 1 0
- - - - - - - -
see below
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
- - - - H H H H
see below
Status Register
4 3 2 1
COR IDX
V - 0 -
0
ERR
V