NEC PowerMate Enterprise, Руководство пользователя

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1-14 Technical Information
Table 1-4 I/O Address Map*
Address (Hex) I/O Device Name
0CFC-0CFF PCI configuration data register
0E80-0E87 Windows sound system
0F40-0F47 Windows sound system
0F86-0F87 Yamaha OPL3-SA configuration
FF00-FF07 IDE Bus Master register
FFA0-FFA7 Primary Bus Master IDE registers
FFA8-FFAF Secondary Bus Master IDE registers
* 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.
Table 1-5 Memory Configurations
DIMM Size Type Configuration Technology
16 MB CAS Latency 2 SDRAM 2-Mbit x 64-bit 16 Mbit
32 MB CAS Latency 2 SDRAM 4-Mbit x 64-bit 16 Mbit
64 MB CAS Latency 2 SDRAM 8-Mbit x 64-bit 64 Mbit
128 MB CAS Latency 2 SDRAM 16-Mbit x 64-bit 64 Mbit
Memory upgrades are easy with DIMM modules. Advantages of using DIMMs include:
„
DIMMs do not need to be installed in pairs on the system board.
„
DIMMs of different memory types and sizes can be installed on the same board.
„
No switches or jumpers need to be set if the memory is changed.
„
System BIOS automatically detects the DIMMs.
See “Checking the Memory in the System” in Section 3 for the valid DIMM configurations.