Lanner IAC-H488 Series, Руководство пользователя

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Chapter3 BIOS Setup
25
User’s Manual
3.5 Advanced Chipset Setup
When you select the “ADVANCED CHIPSET SETUP” on the main program, the screen display will appears
as:
Advanced Chipset Setup Screen
AMIBIOS SETUP – ADVANCED CHIPSET SETUP
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VGA Frame Buffer Size (KB) 4096
VGA Clock Frequency (Mhz) 50
CPU No Lock Feature Enabled
ISA Authorized To Write To IPC Disabled
IPC Wait State Cycles 4
ISA Clock Frequency 14MHz/2
ISA Insert Wait State Enabled
ISA to Host Read Buffer Enabled
ISA to Host Write Posting Enabled
DMA Clock Frequency ISACLK/2
DMA MEMR IOW Synchronous Disabled
DMA 16 Bit Wait State Cycles 4
DMA 8 Bit Wait State Cycles 4
PCI to Host Read Prefetch Enabled
PCI to Host Write Posting Enabled
Memory Hole at 15M-16M Disabled
C0000-C7FFF cacheable Disabled
SDRAM Clock 100MHz
SDRAM Write Posting Disabled
ESC : Exit ↑↓
: Sel
PgUp/PgDn : Modify
F1:Help F2/F3 : Color
In the ‘Advanced Chipset Setup’ page, all options are predefined by the system board designer. Any
attempt to change the parameter of the fields are not recommended.
VGA Frame Buffer Size (KB):
This option help you to use a VGA frame buffer and 16 Mb of RAM at the
same time; the system will allow access to the graphics card through a hole in its own memory map; in
other words, accesses made to addresses within this hole will be directed to the ISA bus instead of main
memory.
VGA Clock Frequency (Mhz): This option let you set the clock frequency of the VGA controller.
CPU No Lock Feature: This option allows you to activate the NOLOCK pin of your CPU, which will improve
your computers overall speed by 5-10%.
ISA Authorized To Write To IPC: This options controls the ISA master writes to IPC register.
IPC Wait State Cycles: This option specifies the number of ISACLK wait states for read or write to PCI
register1.
ISA Clock Frequency: This option sets the ISA clock frequency.
ISA Insert Wait State: The option if extra wait state is inserted of slow ISA devices.
ISA to Host Read Buffer: The option controls suffered reads of host memory by ISA DMA or ISA bus
master.
ISA to Host Write Posting: This option controls posted writes to host memory by ISA DMA or ISA bus
master.