6254M Mainboard
Chapter 2 Installation
17
2-3 SYSTEM MEMORY INSTALLATION
The Mainboard provides four 168-pin DIMM sockets for system memory
expansion from 8MB to 512MB SDRAM, 1GB registered SDRAM or 1GB EDO
DRAM. (EDO DRAM is available for 66MHz processors only.) These four DIMMs
are arranged to four banks, please refer to page A.
Bank/DIMM
Memory Module
Total Memory
Bank0/DIMM1
8/16/32/64/128/256MB
8MB~256MB
Bank1/DIMM2
8/16/32/64/128/256MB
8MB~256MB
Bank2/DIMM3
8/16/32/64/128/256MB
8MB~256MB
Bank3/DIMM4
8/16/32/64/128/256MB
8MB~256MB
Total System Memory
8MB~1GB
DRAM type, size, parity supported:
6
EDO DRAM: for 66MHz system frequency only
6
Unbuffered, registered SDRAM with SPD
6
Both parity or non-parity are available.
6
3.3V, Single/double-side, 8/16/32/64/128/256Mbytes
(Max. memory size: 256MB registered SDRAM or EDO DRAM)
6
Both 4Mbx4 and 16Mbx4 (Each side has 16 chips.) SDRAM devices are
supported in the form of Registered DIMMs only.
u
For 66MHz host bus CPUs use 12ns or faster DIMM module;
u
For 100MHz host bus CPUs use 10ns or faster and PC-100 compliant modules .
@
@
SPD (Serial Presence Detect)
This EPROM contains speed and design information of the memory module. The
mainboard may get optimal performance via accessing the data of SPD.
@
@
ECC (Error Check and Correction)
This mainboard can support the ECC function while utilizing parity modules. To enable
this function, users must set “DRAM Data Integrity Mode” to “ECC” through “Chipset
Features Setup” from the BIOS setup screen. All in all, ECC’s function is to detect and
correct the errors of transfer data.
