Chapter 3 BIOS Setup
26
User’s Manual
3.5 Advanced Chipset Features
When you select the ADVANCED CHIPSET FEATURES SETUP on the main program, the screen display will
appears as:
Advanced Chipset Features Screen
Phoenix - Award BIOS CMOS Setup Utility
Advanced Chipset Features
Memory Hole (15M - 16M)
[Disabled]
Item Help
ISA Clock
[PCICLK/4]
Menu Level
!
SDRAM CAS Latency Time
[3]
SDRAM RAS Precharge Time
[3]
SDRAM RAS to CAS Delay
[3]
SDRAM Cycle Time Tras/Trc
[6/8]
Video Memory Size
[2.0M]
#
$
%&
Move Enter: Select +/-/PU/PD: Value F10: Save Esc: Exit F1: General Help
F5: Previous Values F7: Optimized Defaults
Memory Hole: In order to improve performance, certain space in memory can be reserved for ISA cards.
This memory must be mapped into the memory space below 16MB.
ISA Clock:
This function changes the clock frequency of the ISA bus (14.3MHz/2 and PCICLK/4)
SDRAM CAS Latency Time: Options : 2, 3 This controls the time delay (in clock cycles - CLKs) that passes
before the SDRAM starts to carry out a read command after receiving it.
SDRAM RAS Precharge Time: Options : 2, 3. This option sets the number of cycles required for the RAS to
accumulate its charge before the SDRAM refreshes.
SDRAM RAS to CAS Delay: Options : 2, 3. This option allows you to insert a delay between the RAS (Row
Address Strobe) and CAS (Column Address Strobe) signals.
SDRAM Cycle Time Tras/Trc: Options : 5/6, 6/8. This feature toggles the minimum number of clock cycles
required for the Tras and the Trc of the SDRAM.
Video Memory Size: This option allows the user to select the VGA share memory size.
Summary of Contents for PC/104 Single Board Computer with STPC Atlas CPU, and VGA, LCD, LAN, SSD, on-board RAM, 4xCOM,...
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