NEC POWERMATE PRO2180 - SERVICE 1997, Руководство по обслуживанию

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Technical Information 1-9
Table 1-3 I/O Address Map
Address (Hex) I/O Device Name
0CF9 Turbo and reset control register
0CFC-0CFF* PCI configuration data register
FF00-FF07 IDE bus master register
FFA0-FFA7 IDE primary channel
0FF0-0FF7 CS4236 audio
* Only accessible by DWORD accesses.
System Memory
Configurations ship with 16 MB of memory (32 MB in the SCSI configuration): 640 KB of
base memory and 15 MB (31 MB in the SCSI configuration) of extended memory. System
memory can be expanded up to 256 MB, using optional single in-line memory modules
(SIMMs) installed in SIMM sockets on the system board.
The memory configuration consists of two banks (bank 0 and bank 1) with two sockets
each. The SIMM memory sockets accept 32-bit (non-parity) 4-, 8-, 16-, 32-, or 64-MB,
60 ns, Extended Data Out (EDO) mode SIMMs.
NOTE:
64-MB SIMMs have not been qualified
for use, but they will be supported by the system
board when they become available.
The SIMMs are 1 MB x 32 bit (4 MB), 2 MB x 32 bit (8 MB), 4 MB x 32 bit (16 MB),
8 MB x 32 bit (32 MB), and 16 MB x 32 bit (64 MB). When the standard SIMMs are
removed, four 64-MB SIMMs may be installed for a total of 256 MB.
CAUTION:
SIMMs must match the tin metal
plating used on the system board SIMM sockets.
When adding SIMMs, use tin-plated SIMMs.
SIMMs install directly in the four sockets on the system board. The four sockets are
assigned as Bank 0 (2 sockets) and Bank 1 (2 sockets). All configurations have two SIMMs
installed in bank 1. SIMM banks can be populated in either order.