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58 ECB-865 User’s Manual
4.3.3.3 Memory Hole
This option allows the end user to specify the location of a memory hole for memory space
requirement from ISA-bus cards.
4.3.3.4 DRAM Cycle time (SCLKs)
This option selects the number of SCLKs for an access cycle.
4.3.3.5 CAS# Latency (SCLKs)
This option controls the number of SCLKs between the time a read command is sampled
by the SDRAM and GMCH 82815E samples corresponding data from the SDRAMs.
4.3.3.6 SDRAM RAS# to CAS# Delay
This option controls the number of SCLKs (SDRAM Clock) from a row activate command
to a read or write command. If your system installs good quality of SDRAM, you can set
this option to “2 SCLKs” to obtain better memory performance. Normally, the option will be
set to “3 SCLKs”.
4.3.3.7 SDRAM RAS# Precharge
This option controls the number of SCLKs for RAS# precharge. If your system installs
good quality of SDRAM, you can set this option to “2 SCLKs” to obtain better memory
performance.
4.3.3.8 Internal Graphic Mode Select
This option allows the end users to specify the size of video memory shared from system
memory.
4.3.3.9 USB Function
This option will enable on-chip USB function to support USB (Universal Serial Bus)
peripheral devices if user chooses the “Enabled” setting.