ADFS_PowerControl (changes)
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ADFS
» SWI Calls
» ADFS_PowerControl
ADFS_PowerControl
(SWI &40249)
| Entry | |
|---|---|
| R0 | Reason code (as described below) |
| R1 | Drive |
| R2 | Command (as described below) |
| Exit | |
|---|---|
| R2 | Drive spin status, if RO = 0 on entry |
| Value of 0 = drive is not spinning | |
| Value != 0 = drive is spinning | |
| R3 | Previous value for drive autospindown, if R0 = 1 on entry |
| Reason Codes | |
|---|---|
| 0 | Read drive spin status |
| 1 | Set drive autospindown |
| 2 | Control drive spin directly without affecting autospindown |
| Command | |
|---|---|
| Drive autospindown (if R0 = 1) | |
| 0 | Disable autospindown and spinup drive |
| ≠ 0 | Set autospindown to n seconds (where n = value specified in R2 x 5) |
| Specify spin up or spin down of Drive (if R0 = 2) | |
| 0 | Spin down drive immediately |
| ≠ 0 | Spin up drive immediately |
Use
The purpose of this call is to control the power-saving features of ADFS.
Notes
The drives should fully support drive spin control, otherwise unexpected errors may occur.
See also
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