Dram Timing Settings - JETWAY S446R2A User Manual

AGP Function Settings
This option determines the effective size of the graphics aperture used in the particular PAC
configuration. The AGP aperture is memory-mapped, while graphics data structure can
reside in a graphics aperture. The aperture range should be programmed as not cacheable
in the processor cache, accesses with the aperture range are forwarded to the main memory,
then PAC will translate the original issued address via a translation table that is maintained
on the main memory. The option allows the selection of an aperture size of 32MB, 64MB.
Please refer to section 3-6-2
Memory Hole at 15M-16M
You can reserve this area of system memory for ISA adapter ROM. When this area is
reserved, it cannot be cached. The user information of peripherals that need to use this area
of system memory usually discusses their memory requirements. The settings are: Enabled
and Disabled.
3-6-1 DRAM Timing Setting
CMOS Setup Utility – Copyright(C) 1984-2001 Award Software
Auto Configuration
RAS Active Time
RAS Precharge Time
RAS to CAS Delay
Write Recovery Time
CAS Latency Setting
¡ ü ¡ ý ¡ ú ¡ û Move Enter:Select +/-/PU/PD:Value F10:Save ESC:Exit
F5:Previous Values
RAS Active Time
Select the number of SCLKs for an access cycle. The settings are: Auto (Default), 6T, 7T,
5T, 4T.
RAS Precharge Time
DRAM Timing Setting
Standard
7T
2T
2T
2T
2.5T
F6:Optimized Defaults
28
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F7:Standard Defaults