Set Max Lba/Cyl (F9H) - IBM DTTA-351010 - Deskstar 10.1 GB Hard Drive Specifications

12.28 Set Max LBA/CYL (F9h)

C o m m a n d B l o c k O u t p u t R e g i s t e r s
R e g i s t e r
D a t a
F e a t u r e
S e c t o r C o u n t
S e c t o r N u m b e r
C y l i n d e r L o w
C y l i n d e r H i g h
D e v i c e / H e a d
C o m m a n d
E r r o r R e g i s t e r
7 6 5
C R C U N C 0 I D N
0 0 0
Figure 110. Set Max LBA/CYL (F9h)
This command overwrites the maximum number of LBA/CYL of H D D in a range of actual device capacity.
Once device receives this command, all accesses beyond that LBA/CYL are rejected with setting ABORT bit
in status register. Identify device command returns the LBA/CYL which is set via this command as a
default value.
Read Native Max LBA/CYL command should be issued and completed immediately prior to issuing Set
Max LBA/CYL command. If the device receives Set Max LBA/CYL command without a prior Read
Native Max LBA/CYL command, the device aborts the Set Max LBA/CYL.
If the device receives this command that changes maximum number of LBA or Cylinder to 0, the device
returns aborted error to the host.
Output Parameters To The Device
B Option bit for selection whether nonvolatile or volatile. B = 0 is volatile condition.
When B = 1 , MAX LBA/CYL which is set by Set Max LBA/CYL command is pre-
served by POR. When B = 0 , MAX LBA/CYL which is set by Set Max LBA/CYL
command will be lost by POR.
Sector Number In LBA mode, this register contains LBA bits 0 - 7 which is to be set.(L=1)
In CHS mode, this register is ignored. ( L = 0 )
7 6 5 4 3 2 1 0
B
V V V V V V V V
V V V V V V V V
V V V V V V V V
1 L 1 D H H H H
1 1 1 1 1 0 0 1
4 3 2 1 0
0 A B T T 0 N A M N
0 0 V 0 0
C o m m a n d B l o c k I n p u t R e g i s t e r s
R e g i s t e r 7 6 5 4 3 2 1 0
D a t a
E r r o r . . . S e e B e l o w . . .
S e c t o r C o u n t
S e c t o r N u m b e r V V V V V V V V
C y l i n d e r L o w V V V V V V V V
C y l i n d e r H i g h V V V V V V V V
D e v i c e / H e a d
S t a t u s . . . S e e B e l o w . . .
S t a t u s R e g i s t e r
7 6 5 4 3
B S Y R D Y D F D S C D R Q C O R I D X E R R
0 V 0
Command Descriptions
H H H H
2 1 0
0 V
143