Command Set - Seagate Medalist Pro Series Product Manual

Medalist Pro 6450/5040 Product Manual, February 1997

3.2 Command set

This section lists all of the ATA commands the drives use. Only the
commands with unique implementation for the drives are discussed in
this manual. For information about the ATA interface, refer to Working
Draft X3T10.2008D Rev. 6, Information Technology—AT Attachment-3
Interface ATA-3 . Additional information about the drive commands and
features is provided in Seagate ATA Interface Reference Manual, 36311-
xxx , Small Form Factor Specification, SFF-8011 Rev 1.1, September 18,
1993 , and Small Form-Factor Committee Specification Draft SFF-8055i,
January 8,1996, Revision 1.0, Preliminary Document
The table below lists all commands implemented in the drives. It uses
the following abbreviations:
FR Features register
SC Sector Count register
SN Sector Number register
CY Cylinder register
DH Drive/Head register
n This register does not contain a valid parameter for this
command.
y This register contains a valid parameter for this command. In
the Drive/Head register, both the drive and head parameters
are valid for this command.
D The Drive/Head register contains a valid drive parameter for
this command. The head parameter is not valid for this
command.
Note. Read DMA, Read Long, Read Sector, Read Verify Sector, Write
DMA, Write Long and Write Sector support with retry and without
retry commands.
Command name
Active and Set Idle Timer
Active Immediate
Check Idle Mode
Check Power Mode
Execute Drives Diagnostic
continued
.
Parameters used
Command
code (in hex)
FR SC SN CY DH
FB n y
F9 n n
FD n y
98, E5 n y
90 n n
27
n n D
n n D
n n D
n n D
n n D