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MEMORY CONFIGURATION
Table 3-1
DIMM
Socket
Memory Modules
Mudule
Quantity
DIMM 0
8MB, 16MB, 32MB, 64MB, 128MB, 256MB
168-pin 3.3V SDRAM DIMM
x 1
DIMM 1
8MB, 16MB, 32MB, 64MB, 128MB, 256MB
168-pin 3.3V SDRAM DIMM
x 1
DIMM 3
8MB, 16MB, 32MB, 64MB, 128MB, 256MB
168-pin 3.3V SDRAM DIMM
x 1
3
3
The HOT-681 mainboard provides three 168-pin DIMM sockets that make it possible to
install from 8MB up to 256MB of SDRAM. The DIMM socket support 8MB, 16MB,
32MB, 64MB, 128MB and 256MB 3.3V single- or double- side SDRAM DIMM.
The three DIMM sockets are arranged in three banks of one socket each, Each bank
provides a 64/72-bit wide data path.
HOT-681 provides optional data integrity features including EC (Error Checking) or
ECC (Error Checking and Correcting) in the memory array. EC mode provides single
and multiple bit error detection. In ECC mode, during reads from the DRAM, the HOT-
681 provides error checking and correction of the data.
To support ECC, you must use true (opposed to phantom parity generated by TTL chips)
72-bit parity-type DIMM for all modules.
Install memory in any or all of the banks in any combination as follows:
