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User's Manual 15
Chapter
3
Memory Configuration
The HOT-557 mainboard provides four 72-pin SIMM sockets and two 168-
pin DIMM sockets that make it possible to install up to 128MB of RAM.
The SIMM socket support 4MB, 8MB, 16MB, and 32MB 5V single- or
double-side fast page or EDO DRAM modules, and DIMM socket support
8MB, 16MB, . . ., 3.3V single- or double-side SDRAM, fast page, or EDO
modules.
Caution : The user should not populate both 5V SIMM modules & 3.3V
DIMM modules at the same time.
The four SIMM sockets are arranged in two banks of two sockets each, the
two DIMM socket are also arranged in two banks of one socket each. Each
bank provides a 64/72-bit wide data path.
Both SIMMs in a bank must be of the same memory size and type, although
the different types of memory may differ between banks. It is possible to
have 70 ns fast page DRAM in one bank and 60 ns EDO DRAM in the other.
The memory configuration tables on next two pages liste the SIMMs and
DIMMs memory configuration.