ATA Bus Interface and ATA Commands
Quantum Fireball Plus AS 10.2/20.5/30.0/40.0/60.0 GB AT
6-31
6.7.3
6.7.3
6.7.3
6.7.3
Write Sectors
Write Sectors
Write Sectors
Write Sectors
COMMAND CODE – 30h
DESCRIPTION – The WRITE sectors command reads from 1 to 256 sectors,
beginning at the specified sector. As specified in the command block register, a
sector count equal to 0 requests 256 sectors. When the drive accepts this command,
it sets DRQ and waits for the host to fill the sector buffer with data to be written to
the drive. The drive does not generate an interrupt to start the first buffer-fill
operation. Once the buffer is full, the drive clears DRQ, sets BSY, and begins
execution of the command.
INPUTS
ERROR OUTPUTS
Register
Register
Register
Register
7
77
7
6
66
6
5
55
5
4
44
4
3
33
3
2
22
2
1
11
1
0
00
0
Features
na
Sector Count
Sector count
Sector Number
Sector count or LBA
Cylinder Low
Cylinder low or LBA
Cylinder High
Cylinder high or LBA
Device/ Head
obs
LBA
obs
DEV
na
Head Number or LBA
Command
30h
Register
Register
Register
Register
7
77
7
6
66
6
5
55
5
4
44
4
3
33
3
2
22
2
1
11
1
0
00
0
Error
na
unc
na
IDNF
na
ABRT
na
na
Sector Count
na
Sector Number
na
Cylinder Low
na
Cylinder High
Device/ Head
obs
na
obs
DEV
HEAD number or LBA
Status
BSY
DRDY
DF
na
DRQ
na
na
ERR
Summary of Contents for FIREBALL PLUS AS 10.2
Page 12: ...About This Manual 1 4 Quantum Fireball Plus AS 10 2 20 5 30 0 40 0 60 0 GB AT ...
Page 16: ...General Description 2 8 Quantum Fireball Plus AS 10 2 20 5 30 0 40 0 60 0 GB AT ...
Page 61: ...Basic Principles of Operation Quantum Fireball Plus AS 10 2 20 5 30 0 40 0 60 0 GB AT 5 16 ...
Page 62: ...Basic Principles of Operation 5 17 Quantum Fireball Plus AS 10 2 20 5 30 0 40 0 60 0 GB AT ...
Page 162: ...Index I 4 Quantum Fireball Plus AS 10 2 20 5 30 0 40 0 60 0 GB AT ...