Apple PowerBook 520 Technical Information Page 142

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INDEX
128
R
RAM
address range 10
built in 10
expansion 34–41
addressing 36
connector 36
DRAM devices 39
RAM banks 38
signals 35, 36
expansion card 12
refresh 12
size of 5
RAM expansion 5
RAM expansion card 34–41
design guide 40
dimensions 40
DRAM devices 39
electrical limits 39
RAM banks 38
reentrancy in control strip modules 82
ROM
address range 12
implementation of 12
overlay at startup 12
software features 72
ROM software features 72
S
SCSI Disk Adapter 28
SCSI disk mode 28
SCSI ID, on internal hard disk 19
SCSI port 28
connector 29
secondary logic board 10
selecting SVGA mode 76
serial port 28
SetHardDiskTimeout routine 102
SetIntModemState routine 109
SetProcessorSpeed routine 111
SetSCSIDiskMode routine 112
SetSleepTimeout routine 101
SetSpindownDisable routine 103
SetWakeupTimer routine 113
Singer sound IC 31
sound circuits 32
sound features 73
sound IC 31
sound sample rates 7
sound system
microphone 32
speakers 32
speakers 32
SpinDownHardDisk routine 103
Supertwist display 24
SVGA monitors 76
System 7.1 75
system enabler 75
T, U
telephone line interface. See DAA card
TFT display 24
trackball 22
trackpad 22
software support for 74
Trackpad control panel 79
V, W, X, Y, Z
video
connector 26
external monitors 26
video adapter cable 26
video connector 26
video mirror mode 6
video modes
dual 25
mirror 25
video monitors 24, 25, 26
adapter cable for 26
sense codes for 26
video port 25
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