Read Native Max Address (F8H); Figure 94. Read Native Max Lba/Cyl (F8H) - IBM IC35L020 - Deskstar 20 GB Hard Drive Specifications

15.16 Read Native Max Address (F8h)

Command Block Output
Registers
Register
Data
Feature
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
Error Register
7 6 5
CRC UNC 0
0 0 0

Figure 94. Read Native Max LBA/CYL (F8h)

This command returns the native max LBA/CYL of the drive which is not effected by Set Max Address
command.
Input parameters from the device
Sector Number
Cylinder High/Low
H
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 L 1 D - - - -
1 1 1 1 1 0 0 0
4 3 2 1
IDN 0 ABT T0N AMN
0 0 V 0
In LBA mode this register contains native max LBA bits 0–7. (L=1)
In CHS mode this register contains native max sector number. (L=0)
In LBA mode this register contains native max LBA bits 8–15 (Low),
16–23 (High). (L=1)
In CHS mode this register contains native max cylinder number. (L=0)
In LBA mode this register contains native max LBA bits 24–27. (L=1)
In CHS mode this register contains native max head number. (L=0)
Deskstar 60 GXP Hard disk drive specification
Command Block Input
Register
Data
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
Status Register
0 7 6 5
BSY RDY DF
0 0 V 0
132
Registers
7 6 5 4 3 2 1 0
- - - - - - - -
see below
- - - - - - - -
V V V V V V V V
V V V V V V V V
V V V V V V V V
- - - - H H H H
see below
4 3 2 1
DSC DRQ COR IDX
– – 0 –
0
ERR
V