Advantech PCA-6194, User Manual

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PCA-6194 User Manual 40
3.5 Advanced Chipset Features
By choosing the “Advanced Chipset Features” option from the “Initial
Setup Screen” menu, the screen below will be displayed. This sample
screen contains the manufacturer’s default values for the PCA-6194, as
shown in Figure 3-4:
Figure 3.4: Advanced chipset features screen
3.5.1 System BIOS Cacheable
Selecting “Enabled” allows caching of the system BIOS ROM at
F0000h-FFFFFh, resulting in better system performance. However, if any
program writes data to this memory area, a system error may occur. The
Choices are “Enabled” and “Disabled”.
3.5.2 Memory Hole At 15M-16M
Enabling this feature reserves 15 MB to 16 MB memory address space
for ISA expansion cards that specifically require this setting. This makes
memory from 15 MB and up unavailable to the system. Expansion cards
can only access memory up to 16 MB. The default setting is “Disabled”.
3.5.3 PEG / Onchip VGA Control
Use this field to select PEG or Onchip VGA. The default is AUTO.
3.5.4 On-Chip Frame Buffer Size
The On-Chip Frame Buffer Size can be set to 1 MB or 8 MB. This mem-
ory is shared with the system memory.
3.5.5 DVMT Mode
Displays the active system memory mode.