Apple PowerBook 520 Technical Information Page 90
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CHAPTER 5
Software
76 System Software
The control strip has a tab on its unattached end. The user can drag the tab to adjust the
length of the strip or hold down the Option key and drag the tab to move the strip to a
new position. The user can hide the control strip, except for the tab, by clicking the tab.
Clicking the tab when the control strip is hidden makes the control strip visible again. To
make the control strip disappear completely, the user can click the Hide button in the
Control Strip control panel, described on page 80.
The different parts of the control strip either display status information or act as buttons.
When the user clicks a button, it is highlighted; some buttons also display additional
elements such as pop-up menus.
By holding down the Option key and clicking a display area, the user can drag the
display area to another position in the control strip. After the user rearranges the parts
of the control strip, the new arrangement is saved when the computer is shut down
and restarted.
The control strip software provides a standard screen location for a collection of
individual modules that provide status and control functions. The control strip functions
include
■ AppleTalk Switch: shows whether AppleTalk is on or off and lets the user
turn AppleTalk on or off without having to open the Chooser.
■ Battery Monitor: displays the status of the battery or batteries.
■ File Sharing: displays the state of file sharing (on, off, or users connected), lets the user
turn file sharing on or off, and lets the user open the Sharing Setup control panel.
■ HD Spin Down: shows whether the internal hard disk is on or off; lets the user turn
off the hard disk.
■ Power Settings: lets the user select between maximum conservation or maximum
performance without opening the PowerBook control panel; also lets the user open
the PowerBook control panel.
■ Sleep Now: puts the computer into sleep mode.
■ Sound Volume: lets the user select the sound volume.
■ Video Mirroring: lets the user turn video mirroring on or off if an external monitor is
connected.
Note
Several of the functions of the control strip were implemented in
separate control panels on earlier PowerBook models. ◆
Developers can add modules to the control strip. For information, see the section
“Adding Control Strip Modules” beginning on page 80.
Selecting SVGA 5
An SVGA monitor is considered to be a member of the VGA monitor family. To work
with the PowerBook 520 and 540 computers, an SVGA monitor must be capable of
operating as a standard VGA monitor. With the monitor operating in VGA mode, the
user selects the Monitors control panel and clicks the Options button. The user then
selects SVGA in the Monitor types list shown in the Options dialog box.
- 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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