Quantum Audio STT2401A Manuel D’Utilisation
ATAPI Interface
Chapter 5
Seagate Travan 40 Product Manual
Page 107
NOP (ATA Command 00)
This command allows a Host that only performs 16-bit register accesses, to check
device status.
device status.
If this command is supported, the drive shall respond, as it does to an unrecognized
command by setting the ABRT bit to 1 in the Error register, setting the Error bit in
the Status Register, clearing the BSY to 0 in the Status Register, and asserting
INTRQ signal.
command by setting the ABRT bit to 1 in the Error register, setting the Error bit in
the Status Register, clearing the BSY to 0 in the Status Register, and asserting
INTRQ signal.
This command is not supported. The device will abort the command.
Host Taskfile Registers—Inputs
Data Bits
Host Taskfile
Register
Register
7
6
5
4
3
2
1
0
HEX
Features
N/A
N/A
Sector Count
N/A
N/A
Sector
Number
Number
N/A
N/A
Byte Count
High
High
N/A
N/A
Byte Count
Low
Low
N/A
N/A
Device/Head
rsvd
LBA
rsvd
DEV
SAM LUN (not used)
Command
command
00
Host Taskfile Registers—Outputs
Data Bits
Host Taskfile
Register
Register
7
6
5
4
3
2
1
0
HEX
Error
rsvd
tag type (not supported)
MCH
ABRT
EOM
ILI
04
Sector Count
not changed
00
Sector
Number
Number
not changed
00
Byte Count
High
High
not changed
00
Byte Count
Low
Low
not changed
00
Device/Head
rsvd
LBA
rsvd
DEV
SAM LUN (not used)
Status
BSY
RDY
rsvd
DSC
DRQ
Corr
rsvd
CHK
00