Apple PowerBook 520 Technical Information Page 117
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CHAPTER 6
Power Manager Interface
About the Power Manager Interface 103
SpinDownHardDisk 6
You can use the SpinDownHardDisk routine to force the hard disk to spin down.
void SpinDownHardDisk();
DESCRIPTION
The SpinDownHardDisk routine immediately forces the hard disk to spin down and
power off if it was previously spinning. Calling SpinDownHardDisk will not spin
down the hard disk if spindown is disabled by calling SetSpindownDisable (defined
later in this section).
ASSEMBLY-LANGUAGE INFORMATION
The trap is _PowerMgrDispatch ($A09E). The selector value for SpinDownHardDisk
is 7 ($07) in the low word of register D0.
IsSpindownDisabled 6
You can use the IsSpindownDisabled routine to find out whether hard disk
spindown is enabled.
Boolean IsSpindownDisabled();
DESCRIPTION
The IsSpindownDisabled routine returns a Boolean true if hard disk spindown is
disabled, or false if spindown is enabled.
ASSEMBLY-LANGUAGE INFORMATION
The trap is _PowerMgrDispatch ($A09E). The selector value for
IsSpindownDisabled is 8 ($08) in the low word of register D0. The Boolean
result is passed in the low byte of register D0.
SetSpindownDisable 6
You can use the SetSpindownDisable routine to disable hard disk spindown.
void SetSpindownDisable(Boolean setDisable);
- PowerBook 520 and 520c and 1
- PowerBook 540 and 540c 1
- Computers 1
- Contents 3
- I/O Features 4
- Expansion Modules 4
- Power Manager Interface 6
- Figures and Tables 7
- About This Developer Note 9
- PREFACE 10
- Typographical Conventions 0 11
- Standard Abbreviations 0 11
- Introduction 1 15
- Features 1 16
- Appearance 1 17
- 4 Appearance 18
- Configurations 1 19
- Peripheral Devices 1 19
- Compatibility Issues 1 20
- MacsBug Version 6.2.2 1 21
- Sound Sample Rates 1 21
- Architecture 2 23
- Processor/Memory Subsystem 2 24
- Architecture 25
- Processor/Memory Subsystem 11 25
- Input/Output Subsystem 2 26
- Power Manager IC 2 27
- Display Controller IC 2 28
- Combo IC 2 28
- Singer IC 2 28
- Ariel Video Output IC 2 28
- I/O Features 3 29
- Internal Hard Disk Drive 3 30
- Hard Disk Carrier Bracket 3 31
- Hard Disk Mounting Envelope 3 32
- Hard Disk Connector 3 32
- Signals on Connector J1 3 33
- Signals on Connector J2 3 34
- Internal Floppy Disk Drive 3 35
- Trackpad 3 36
- Keyboard 3 36
- Flat Panel Displays 3 37
- External Video Port 3 38
- Video Mirroring 3 39
- Video Monitors 3 39
- External Video Connector 3 40
- Monitor Sense Codes 3 40
- CHAPTER 3 41
- SCSI Port 3 42
- Serial Port 3 42
- SCSI Connectors 3 43
- Ethernet Port 3 44
- ADB Port 3 45
- Sound System 3 45
- Sound System 46
- Expansion Modules 4 47
- RAM Expansion Card 4 48
- Connector Pin Assignments 4 49
- Signal Descriptions 4 50
- Address Multiplexing 4 50
- RAM Expansion Card 37 51
- Signal name Description 51
- Banks of DRAM 4 52
- DRAM Device Requirements 4 53
- RAM Expansion Connector 4 54
- RAM Expansion Card Design 4 54
- RAM Expansion Card 41 55
- PDS Expansion Card 4 56
- PDS Expansion Card 43 57
- CHAPTER 4 58
- PDS Expansion Card 60
- PDS Power Consumption 4 63
- PDS Expansion Card 51 65
- Addressing Guidelines 4 66
- Timing Considerations 4 66
- PDS Card Shell 4 67
- PDS Card Connector 4 67
- PDS Card Design 4 68
- PDS Expansion Card 55 69
- Modem Expansion Card 4 70
- Modem Expansion Card 57 71
- Modem Expansion Card 72
- Modem Power 4 76
- Modem Card Connector 4 76
- Design of the Modem Card 4 76
- Modem Expansion Card 63 77
- DAA Interface Card 4 78
- DAA Connector 4 80
- DAA Interface Card 67 81
- The Multi-Country DAA Card 4 82
- DAA Interface Card 69 83
- Software 5 85
- ROM Software 5 86
- Power Manager Software 5 87
- Display Controller Software 5 87
- Sound Features 5 87
- Ethernet Driver 5 87
- PDS Support Software 5 88
- Support for Function Keys 5 88
- Intelligent Battery Support 5 88
- Trackpad Software 5 88
- System Software 5 89
- Selecting SVGA 5 90
- New Control Panels 5 91
- System Software 92
- Trackpad Control Panel 5 93
- Control Strip Control Panel 5 94
- AutoRemounter Control Panel 5 94
- Contents of Module Files 5 95
- Module Interface 5 95
- Module Reentrancy 5 96
- Message name 97
- number Description 97
- Utility Routines 5 100
- SBIsControlStripVisible 5 101
- SBShowHideControlStrip 5 101
- SBSafeToAccessStartupDisk 5 101
- SBLoadPreferences 5 102
- SBSavePreferences 5 102
- SBOpenModuleResourceFile 5 102
- SBGetDetachedIndString 5 103
- SBGetDetachIconSuite 5 103
- SBTrackpopupMenu 5 104
- SBTrackSlider 5 104
- SBShowHelpString 5 105
- SBGetBarGraphWidth 5 105
- SBDrawBarGraph 5 105
- Software 106
- Gestalt Selectors 5 107
- Power Manager Interface 6 109
- Things That May Change 6 110
- Checking for Routines 6 111
- CHAPTER 6 112
- PMSelectorCount 6 113
- PMFeatures 6 113
- GetSleepTimeout 6 114
- SetSleepTimeout 6 115
- GetHardDiskTimeout 6 115
- SetHardDiskTimeout 6 116
- HardDiskPowered 6 116
- SpinDownHardDisk 6 117
- IsSpindownDisabled 6 117
- SetSpindownDisable 6 117
- HardDiskQInstall 6 118
- HardDiskQRemove 6 119
- GetScaledBatteryInfo 6 119
- DESCRIPTION 120
- AutoSleepControl 6 121
- GetIntModemInfo 6 122
- SetIntModemState 6 123
- MaximumProcessorSpeed 6 123
- CurrentProcessorSpeed 6 124
- FullProcessorSpeed 6 124
- SetProcessorSpeed 6 125
- GetSCSIDiskModeAddress 6 125
- SetSCSIDiskModeAddress 6 126
- GetWakeupTimer 6 126
- SetWakeupTimer 6 127
- IsProcessorCyclingEnabled 6 128
- EnableProcessorCycling 6 128
- BatteryCount 6 129
- GetBatteryVoltage 6 129
- GetBatteryTimes 6 130
- V, W, X, Y, Z 142
- DEVELOPMENTAL EDITORS 144
- ILLUSTRATORS 144
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