Quantum FIREBALL PLUS AS 10.2 User Manual

ATA Bus Interface and ATA Commands
Quantum Fireball Plus AS 10.2/20.5/30.0/40.0/60.0 GB AT 6-75
6.7.28
6.7.286.7.28
6.7.28 Configuration
ConfigurationConfiguration
Configuration
In addition to the SET FEATURES command, the Quantum Fireball Plus AS 10.2/
20.5/30.0/40.0/60.0 GB AT hard disk drives provide two configuration commands:
• The SET CONFIGURATION command, which enables the host to
change DisCache and Error Recovery parameters
• The READ CONFIGURATION command, which enables the host to
read the current configuration status of the drive
See Chapter 5 for more details about DisCache and setting cache parameters. See
Chapter 5 also for more information about error detection and defect management.
6.7.28.1
6.7.28.16.7.28.1
6.7.28.1 Read Configuration
Read ConfigurationRead Configuration
Read Configuration
The READ CONFIGURATION command displays the configuration of the drive.
Like the SET CONFIGURATION command, this command is secured to prevent
accidentally accessing it. To access the READ CONFIGURATION command, you
must write the pattern shown in Table 6-30 to the Command Block Registers. The
first byte, 01h, is a subcode to the extended command code, F0h.
Table 6-30
Table 6-30 Table 6-30
Table 6-30
Accessing the READ CONFIGURATION Command
Note:
Note:Note:
Note: In Table 6-30:
Only the value in address 1F2h of the Command Block
Registers is different from the SET CONFIGURATION
command.
Registers 1F2h
through 1F5h must contain the exact values
shown in Table 6-30. These values function as a key. The drive
issues the message ILLEGAL COMMAND if the key is not
entered correctly.
To select the drive for which the configuration is to be read, set
register 1F6h. For execution of the command to begin, load
register 1F7h with F0h.
A 512-byte data field is associated with the READ CONFIGURATION command.
A 512-byte read sequence sends this data from the drive to the host. The
information in this data field represents the current settings of the configuration
parameters. The format of the READ CONFIGURATION command data field is
similar to that for the data field of the SET CONFIGURATION command, shown
ADDRESS
ADDRESSADDRESS
ADDRESS VALUE
VALUEVALUE
VALUE DEFINITION
DEFINITIONDEFINITION
DEFINITION
1F2h 01h Read Configuration Subcode
1F3h FFh Password
1F4h FFh Password
1F5h 3Fh Password
1F6h AXh
(Drive 0)
Drive Select
BXh
(Drive 1)
Drive Select
1F7h F0h Extended Command Code

Quantum FIREBALL PLUS AS 10.2 Specifications

General

Brand	Quantum
Model	FIREBALL PLUS AS 10.2
Category	Storage
Language	English