39
3.5.15 Memory Hole At 15M-16M
Some add-in cards need to re-map its resource to a block of main memory address range. Any
host cycles that match this memory hole are passed on to the add-in cards.
Options
Enabled
Disabled (*)
3.5.16 AGP Aperture Size (MB)
This field specifies the size of system memory that can be used for A.G.P. graphics aperture.
Options
4 / 8 / 16 / 32 / 64 (*) / 128 / 256
3.5.17 SDRAM RAS-to-CAS Delay
This field specifies the delay in assertion of CAS# from the assertion of RAS# of SDRAM
memory. This is for the experienced users only.
Options
Description
Slow (*)
3 system clocks delay
Fast
2 system clocks delay
3.5.18 SDRAM RAS Precharge Time
This field specifies the SDRAM RAS# pre-charge requirements. This is for experienced users
only.
Options
Description
Fast (*)
2 system clocks for RAS# precharge
Slow
3 system clocks for RAS# precharge
3.5.19 SDRAM CAS Latency Time
This field specifies the SDRAM CAS latency timing parameter (the time from CAS# assertion to
data valid). This is for experienced users only.
Options
Description
2
2 system clocks
3 (*)
3 system clocks
