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User Manual version 2503
LIBRA 120 III (PC620 Intel 815E)
5-88
u MEMORY FREQUENCY FOR
u SYSTEM BIOS CACHEABLE:
When Enabled is selected, it allows caching of the system
BIOS ROM at F0000h-FFFFFh, resulting in better system
performance.
However, if any program writes to this memory area, a
system error may occur.
The choice: Enabled or Disabled.
u VIDEO BIOS CACHEABLE
When Enabled is selected, it allows caching of the Video RAM,
resulting in better system performance. However, if any
program writes to this memory area, a system error may
occur.
The choice: Enabled or Disabled.
u MEMORY HOLE AT 15M-16M:
You can reserve this area of system memory for ISA adapter
ROM. When this area is reserved, it cannot be cached. The
user information of peripherals that need to use this area of
system memory usually discusses their memory
requirements.
u DELAYED TRANSACTION
u DELAY PRIOR TO THERMAL
u AGP APERTURE SIZE (MB)
This category selects the size of Accelerated Graphics Port
(AGP) aperture. The aperture is a portion of the PCI memory
address range dedicated for graphics memory address space.
Host cycles that hit the aperture range are forwarded to the
AGP without any translation.
The Choice: 4M, 8M, 16M, 32M, 64M, 128M & 256M.
u DISPLAY CACHE FREQUENCY
u SYSTEM MEMORY FREQUENCY
u ON-CHIP VIDEO WINDOWS SIZE
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