Power Management Overview; Dma Channel - NEC VERSA 2600 Service Manual

1-20 Technical Information

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.
Table Section 1-6 Automatic Power-Saving Features
Device
Video
Hard Disk
Standby
You can change the timeout period for any of the devices using Setup. See Section 2 for
Setup utility procedures.
Table 1-5 DMA Channel
Default
Timeout Comment
2 minutes Video turns off after there is no keyboard or
VersaGlide input for the specified timeout.
15 seconds Hard disk motor stops when hard disk is not accessed
for specified timeout.
2 minutes System enters Standby mode after total system
inactivity.
Assigned Device
Enhanced Printer Port
Sound Chip (default)
FDD Controller
Not Used
Cascade from DMA Controller, P
Not Used
Not Used
Not Used