IBM IC25N040ATCS04 - Travelstar 40 GB Hard Drive - 13.15 Read Multiple (C4 h)

13.16 Read Native Max ADDRESS (F8h)
see belowStatus1 1 1 1 1 0 0 0Command
- - - - H H H HDevice/Head1 L 1 D - - - -Device/Head
V V V V V V V VCylinder High- - - - - - - -Cylinder High
V V V V V V V VCylinder Low- - - - - - - -Cylinder Low
V V V V V V V VSector Number- - - - - - - -Sector Number
- - - - - - - -Sector Count- - - - - - - -Sector Count
see belowError- - - - - - - -Feature
- - - - - - - -Data- - - - - - - -Data
7 6 5 4 3 2 1 0Register7 6 5 4 3 2 1 0Register
Command Block Input RegistersCommand Block Output Registers
V-0--0V000V00000
ERRIDXCORDRQDSCDFRDYBSYAMNT0NABT0IDN0UNCCRC
0123456701234567
Status RegisterError Register
Figure 101. Read Native Max ADDRESS (F8h)
This command returns the native max LBA/CYL of the drive which is not effected by the Set Max
ADDRESS command. Even if the Address Offset mode is enabled, the native max LBA/CYL is returned.
Output parameters to the device
L LBA mode. This indicates the addressing mode. L = 0 specifies CHS mode and L
= 1 specifies the LBA addressing mode.
D This is the device number bit. Indicates that the device number bit of the
Device/Head Register should be specified. D = 0 selects the master device and D
= 1 selects the slave device.
- Indicates that the bit is not used.
Input parameters from the device
Sector Number In LBA mode this register contains the native max LBA bits 0–7. (L = 1)
In CHS mode this register contains the native max sector number. (L = 0)
Cylinder High/Low In LBA mode this register contains the native max LBA bits 8–15 (Low) and bits
16–23 (High). (L = 1)
In CHS mode this register contains the native max cylinder number. (L = 0)
H In LBA mode this register contains the native max LBA bits 24–27. (L = 1) In CHS
mode this register contains the native maximum head number. (L = 0)
Travelstar 60GH & 40GN hard disk drive specifications
141