Intel MB884 user manual Dram RAS# to CAS# Delay, Dram RAS# Precharge, Precharge delay tRAS

BIOS SETUP

DRAM RAS# to CAS# Delay

This option allows you to insert a delay between the RAS (Row Address Strobe) and CAS (Column Address Strobe) signals. This delay occurs when the SDRAM is written to, read from or refreshed. Reducing the delay improves the performance of the SDRAM.

DRAM RAS# Precharge

This option sets the number of cycles required for the RAS to accumulate its charge before the SDRAM refreshes. The default setting for the Active to Precharge Delay is 3.

Precharge delay (tRAS)

The default setting for the Active to Precharge Delay is 7.

System Memory Frequency

This field sets the frequency of the DRAM memory installed. The default setting is Auto. The other settings are DDR333,DDR400 and DDR533.

SLP_S4# Assertion Width

Pushing the power button for 1 to 2 seconds will power off the system.This will prevent the system from powering off in case you accidentally hit or pushed the power button.

System BIOS Cacheable

The setting of Enabled allows caching of the system BIOS ROM at F000h-FFFFFh, resulting in better system performance. However, if any program writes to this memory area, a system error may result.

Video BIOS Cacheable

The Setting Enabled allows caching of the video BIOS ROM at C0000h-F7FFFh, resulting in better video performance. However, if any program writes to this memory area, a system error may result.

Memory Hole At 15-16M

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 16 MB. The choices are Enabled and Disabled.

PCI Express Port 1/2/3/4

The default setting is Auto. The choices are Enabled , Disabled and Auto.

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