Supplementary Information About Dimms; Memory Installation Procedures; Cache Memory - Advantech PCA-6003 Manual

1.9.2 Supplementary information about DIMMs

Your PCA-6003 can accept SDRAM memory chips with or without
parity. Also note:
•
If the PCA-6003 operates at 133/100 MHz, only use PC-133/ PC-100
compliant DIMMs. Most systems will not even boot if non-compli-
ant modules are used. This is due to strict timing issues involved at
this speed.
•
SDRAM chips are usually thinner and have higher pin density than
EDO chips.
•
Chips with 9 chips/side support ECC; chips with 8 chips/side do not
support ECC.

1.10 Memory Installation Procedures

To install DIMMs, first make sure the two handles of the DIMM
socket are in the "open" position. i.e. The handles lean outward.
Slowly slide the DIMM module along the plastic guides on both ends
of the socket. Then press the DIMM module right down into the
socket, until you hear a click. This is when the two handles have
automatically locked the memory module into the correct position of
the DIMM socket. To remove the memory module, just push both
handles outward, and the memory module will be ejected by the
mechanism in the socket.

1.11 Cache Memory

Since the second level (L2) cache has been embedded into the Intel
Pentium III/Celeron processor, you do not have to take care of either
SRAM chips or SRAM modules. The built-in second level cache in the
Pentium III/Celeron processor yields much higher performance than
the external cache memories. The cache size in the Intel
processor is 256 KB or 512 KB, for Celeron processor is 128 or 256 KB.
PCA-6003 User's Manual
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Pentium III
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