FUJITSU MHT2060BH - Manual (Page 187)

5.3 Host Commands
C141-E203-01EN 5-113
(38) SET MAX (X’F9’)
SET MAX Features Register Values
Value Command
00h Obsolete
01h SET MAX SET PASSWORD
02h SET MAX LOCK
03h SET MAX UNLOCK
04h SET MAX FREEZE LOCK
05h - FFh Reserved
•
SET MAX ADDRESS
A successful READ NATIVE MAX ADDRESS command shall immediately
precede a SET MAX ADDRESS command.
This command allows the maximum address accessible by the user to be set in LBA
or CHS mode. Upon receipt of the command, the device saves the maximum address
specified in the DH, CH, CL and SN field then, reports the status to the host.
The new address information set by this command is reflected in Words 1, 54, 57,
58, 60 and 61 of IDENTIFY DEVICE information. If an attempt is made to
perform a read or write operation for an address beyond the new address space, an
ID Not Found error will result.
When SC field bit 0, VV (Value Volatile), is 1, the value set by this command is
held even after power on and the occurrence of a hard reset. When the VV bit is 0,
the value set by this command becomes invalid when the power is turned on or a
ComRest occurs, and the maximum address returns to the value most lately set
when VV bit = 1. (The value by VV bit = 0 is held in case that this command with
VV bit = 1 has not been issued or had set the default value, and ComRest occurs.)
When the READ NATIVE MAX ADDRESS command has been issued
immediately preceding this command, this command operates normally as the SET
MAX ADDRESS command. Otherwise, this command operates as one of the SET
MAX subcommands depending on the value in the Features field. The
subcommands are explained below.
After power on and the occurrence of a ComRest, the host can issue this command
only once when VV bit = 1. If this command with VV bit = 1 is issued twice or more,
any command following the first time will result in an Aborted Command error.
When the SET MAX ADDRESS EXT command is executed, all SET MAX
ADRESS commands are aborted. The address value returns to the origin when the
SET MAX ADDRESS EXT command is executed using the address value returned
by the READ NATIVE MAX ADDRESS command.