5
5-10
Programming Device PG 740
C79000-G7076-C742-01
The following submenu appears when you select the option “Memory
shadow” in the main menu:
PhoenixBIOS Setup-Copyright 1985-95 Phoenix Technologies Ltd.
Item Specific Help
F1
ESC
Help
Exit
Select Item
Select Menu
+ / –
Enter Select
Change Values
F9
F10
Setup Defaults
Previous Values
Sub-Menu
System shadow:
Video shadow:
[Enabled]
Main
Security
Power
Exit
Advanced
Memory Shadow
Enabled
Video BIOS may be copied to
shadow RAM for increased
performance.
Figure 5-5
“Memory Shadow” Submenu
Parts of the EPROM, for example, those which contain the power-on selftests
and the basic input/output system, are copied into the faster DRAM (shadow
memory).
System Shadow always indicates “Enabled” since the system BIOS is always
copied into the faster RAM.
ÁÁÁÁÁÁ
Á
ÁÁÁÁ
Á
Video Shadow
enabled
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Á
The BIOS expansion for display outputs is copied into the RAM
ÁÁÁÁÁÁ
Á
ÁÁÁÁ
Á
ÁÁÁÁÁÁ
Video Shadow
disabled
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Á
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The BIOS expansion for display outputs is not copied into the
RAM
The Video Shadow setting is only effective if an external VGA interface
module is used.
“
Memory Shadow”
Option
Configuring the PG 740