System Memory; Memory Configurations - NEC PowerMate Enterprise Manual

1-14 Technical Information
Address (Hex)
0CFC-0CFF
0E80-0E87
0F40-0F47
0F86-0F87
FF00-FF07
FFA0-FFA7
FFA8-FFAF
* In Plug and Play systems, these addresses are typical but may vary by configuration.
** Only accessible by DWORD accesses.
*** Byte access only.

System Memory

The system comes with between 32 MB and 384 MB of SDRAM installed in dual in-line
memory module DIMM sockets on the system board.
The memory configuration consists of three sockets. The DIMM memory sockets accept
168-pin, 64-bit (non-parity) 16-, 32-, 64-, and 128-MB DIMMs (64-MB and 128-MB as
available).
Table 1-5 lists the supported DIMMs.
DIMM Size
16 MB
32 MB
64 MB
128 MB
Memory upgrades are easy with DIMM modules. Advantages of using DIMMs include:
T
DIMMs do not need to be installed in pairs on the system board.
T
DIMMs of different memory types and sizes can be installed on the same board.
T
No switches or jumpers need to be set if the memory is changed.
T
System BIOS automatically detects the DIMMs.
See "Checking the Memory in the System" in Section 3 for the valid DIMM configurations.
Table 1-4 I/O Address Map*
I/O Device Name
PCI configuration data register
Windows sound system
Windows sound system
Yamaha OPL3-SA configuration
IDE Bus Master register
Primary Bus Master IDE registers
Secondary Bus Master IDE registers
Table 1-5 Memory Configurations
Type
CAS Latency 2 SDRAM
CAS Latency 2 SDRAM
CAS Latency 2 SDRAM
CAS Latency 2 SDRAM
Configuration Technology
2-Mbit x 64-bit 16 Mbit
4-Mbit x 64-bit 16 Mbit
8-Mbit x 64-bit 64 Mbit
16-Mbit x 64-bit 64 Mbit