Maxtor DIAMONDMAXTM PLUS 5120 92048D8 - Manual (Page 54)

INTERFACE COMMANDS
7 – 6
Set Feature Commands
Set Features Mode
Enables or disables features supported by the drive. When the drive receives this command it:
1. Sets BSY,
2. Checks the contents of the Features register,
3. Clears BSY and
4. Generates an interrupt.
If the value of the register is not a feature supported by the drive, the command is aborted.
The acceptable values in the Features register are defined as follows:
VALUE DESCRIPTION
02h* Enabled write cache
03h Set transfer mode based on value in Sector Count register
44h Length of data appended on Read Long/Write Long commands specified in the
Identify Device information
55h Disable read look-ahead feature
66h* Disable reverting to power-on defaults
82h Disable write cache
AAh* Enable read look-ahead feature
BBh* 4 bytes of Maxtor specific data appended on Read Long/Write Long commands
CCh Enable reverting to power-on defaults
* Enabled at power up by default.