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Configuring shadow memory
The system can configure the Memory Shadow options or
you can manually enable shadowing for all of your video
memory or for specific blocks of video ROM.
Note
Shadowing for system memory is always enabled. For the
best system perform ance, always set the Video shadow
option to Enabled.
Your computer can access RAM faster than ROM. The options
on this screen allow your system to copy the contents of its
video ROM into RAM. When you use shadowing, your system
can perform certain operations faster, providing a significant
increase in perform ance.
If you enable video shadowing for specific blocks, the ROM
located in each enabled block is copied to the shadow RAM
area.
Configuring your parallel port mode
To select the mode you want to use for your parallel port, select
the Advanced Chipset Control option. Then set the
L P T E x t e n d e d M o d e o p t i o n t o S t a n d a r d ( f o r A T
unidirectional mode), EPP mode (for Enhanced Parallel Port
bidirectional mode),
Port bidirectional mode), or Disabled to disable the port.
If you use EPP mode or ECP mode, check your parallel device
software documentation for the correct DMA channel (DRQ)
setting. Then set jumpers JP17 and JP18 to match this setting, as
described in Chapter 4.
mode (for Extended Capabilities
ECP
Running SETUP and Installing Drivers 2-7
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