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SY-5EMA+
Quick Start Guide
9
Installation
JP8 is used to indicate the frequency of the CPU bus clock to the ETEQ chipset.
JP9 and JP10 are used to determine that the SDRAM is running at the frequency of the
CPU bus clock or the AGP clock.
CPU BUS
Clock
AGP BUS
Clock
PCI Clock JP10 JP8 JP9
SDRAM
Clock
66MHz 66MHz 33MHz 1-2 2-3 2-3 66MHz
75MHz 75MHz 37.5MHz 1-2 2-3 2-3 75MHz
2-3 1-2 1-2 55MHz
83MHz 55MHz 27.5MHz
1-2 1-2 2-3 83MHz
2-3 1-2 1-2 63.4MHz
95MHz 63.4MHz 31.7MHz
1-2 1-2 2-3 95MHz
2-3 1-2 1-2 66MHz
100MHz 66MHz 33MHz
1-2 1-2 2-3 100MHz
2-3 1-2 1-2 75MHz
112MHz 75MHz 37.5MHz
1-2 1-2 2-3 112MHz
2-3 1-2 1-2 82.6MHz
124MHz 82.6MHz 41.3MHz
1-2 1-2 2-3 124MHz
Note:
Use 8ns or faster SDRAM modules (for PC100) when SDRAM is set to run at
the frequency of 95/100MHz.
Step 4. Configure Memory
Your board comes with three DIMM sockets, providing support for up to 768MB of main
memory using DIMM modules from 8MB to 256MB. For 66MHz host bus CPUs use 12ns or
faster DIMM modules; for 83MHz host bus CPUs use 8ns modules.
Memory Configuration Table
DIMM BanksMEMORY
CONFIGURATION
DIMM 1 DIMM 2 DIMM 3
RAM Type
FPM/EDO/SDRAM FPM/EDO/SDRAM FPM/EDO/SDRAM
Single RAM
Module Size (MB)
8/16/32/64/128/256 8/16/32/64/128/256 8/16/32/64/128/256
Note: Do not use FPM or EDO type of SIMM/DIMM if you already use SDRAM.