Power Management Overview; Dma Channel - NEC Versa 2600 Series Service Manual

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1-20

DMA Channel

DMA0
DMA1
DMA2
DMA3
DMA4
DMA5
DMA6
DMA7

POWER MANAGEMENT OVERVIEW

Power Management in the NEC Versa lets you conserve energy, save battery power, extend
the life of your LCD backlight, and protect against data loss due to low battery power.
Set some features to function automatically or activate them manually with the keyboard or
a button. It is wise to keep Power Management features enabled, even when using AC
power.
The system arrives set up with many power-saving features already enabled. See the fol-
lowing table.
You can change the timeout period for any of the devices using Setup. See Section 2 for
Setup utility procedures.
Technical Information
Table 1-5 DMA Channel
Table Section 1-6 Automatic Power-Saving Features
Default
Device Timeout
Video 2 minutes
Hard Disk 15 seconds
Standby 2 minutes
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Assigned Device
Enhanced Printer Port
Sound Chip (default)
FDD Controller
Not Used
Cascade from DMA Controller, P
Not Used
Not Used
Not Used
Comment
Video turns off after there is no keyboard or
VersaGlide input for the specified timeout.
Hard disk motor stops when hard disk is not accessed
for specified timeout.
System enters Standby mode after total system
inactivity.