Transcend Information TS-ABX31 user manual Sdram RAS-to-CAS Delay, Sdram RAS Precharge Time

25 BIOS SETUP

•SDRAM RAS-to-CAS Delay

This controls the latency between SDRAM active command and the read/write command. Leave on default setting.

•SDRAM RAS Precharge Time

This controls the idle clocks after issuing a precharge command to SDRAM. Leave on de- fault setting.

•SDRAM CAS Latency Time

This controls the SDRAM performance, default is 3 clocks. If your SDRAM DIMM specifica- tion is 2 CAS latency, change 3 to 2 for better performance.

•SDRAM Precharge Control

This option is to determine the number of clocks required to deassert RAS and the timing for SDRAM to do precharge before next RAS can be issued.

•DRAM Data Integrity Mode

NON-ECC : Disable Error Correct Check function.

ECC : Enable Error Correct Check Function.

•System BIOS Cacheable

Selecting “Enabled” allows caching of the system BIOS. This action can increase system performance.

•Video BIOS Cacheable

Selecting “Enabled” allows caching of the video BIOS. This action can increase system per- formance.

•Video RAM Cacheable

Selecting “Enabled” allows caching of the video RAM, which results in better system perfor- mance. However, if any program writes to this memory area, a system error may occur.

•8 Bit I/O Recovery Time

Recovery time is needed for old 8-bit ISA cards. Default setting is 1 ISA clock. If you find any unstable 8-bit ISA card, you may try to extend the I/O recovery time.

•16 Bit I/O Recovery Time

Recovery time is needed for 16-bit ISA cards. Default setting is 1 ISA clock. If you find any unstable 16-bit ISA cards, you may try to extend the I/O recovery time.