Command Register; Read Commands; Write Commands; Mode Set/Check Commands - Maxtor 87000D8 Installation And Use Manual

Command Register

Contains code for the command to be performed. Additional command information should be written to the task
file before the Command register is loaded. When this register is written, the BUSY bit in the Status register sets,
and interrupt request to the host clears; invalid commands abort. (Detailed information on interface commands is
given in Section 7.) Hex values for valid command formats follow:

Read Commands

Read Sector(s)
Read Verify Sector(s)
Read Sector Buffer
Read Multiple
Read DMA

Write Commands

Write Sector(s)
Write Verify Sector(s)
Write Sector Buffer
Write Multiple
Write DMA

Mode Set/Check Commands

Set Features
Set Multiple Mode

Power Mode Commands

Standby Immediate
Idle Immediate
Standby
Idle
Check Power Mode
Set Sleep Mode

Initialization Commands

Identify Drive
Initialize Drive Parameters
Re-calibrate

Seek, Format, and Diagnostic Commands

Seek
Format Track
Execute Drive Diagnostic

S.M.A.R.T. Commands

Execute S.M.A.R.T.
20h Normal reads; retries enabled
21h Normal reads; retries disabled
22h Read Long; retries enabled
23h Read Long; retries disabled
40h Retries enabled
41h Retries disabled
E4h
C4h
C8h
C9h No retries
30h Normal writes; retries enabled
31h Normal writes; retries disabled
32h Write Long; retries enabled
33h Write Long; retries disabled
3Ch
E8h
C5h
CAh
CBh No retries
EFh
C6h
94/E0h Stops drive spindle; do not change time-out value
95/E1h Starts spindle; do not change time-out value
96/E2h Stops spindle; change time-out value
97/E3h Starts spindle; change time-out value
98/E5h
99/E6h
ECh
91h
1xh
7xh
50h
90h
B0h
HOST SOFTWARE INTERFACE
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