System Memory; Simm Memory Upgrade Path - NEC POWERMATE OFFICE 2513 Service Manual

1-14 Technical Information

System Memory

The PowerMate Office 2513 model and some 2516 models come standard with 16 MB of
memory: 640 KB of base memory and 15 MB of extended memory. Some PowerMate
Office 2516 models come standard with 32 MB of memory: 640 KB of base memory and
31 MB of extended memory. System memory can be expanded up to 128 MB, using
optional single in-line memory modules (SIMMs) installed in SIMM sockets on the system
board.
Four SIMM sockets are integrated on the system board. The 16-MB systems ship with two
8-MB SIMMs. The 32-MB system ships with two 16-MB SIMMs. All systems ship with
60-ns tin-plated EDO SIMMs.
The SIMM memory sockets accept 32-bit (non-parity) 4-, 8-, 16-, or 32-MB SIMMs. The
SIMMs are 1 MB x 32 bit (4 MB), 2 MB x 32 bit (8 MB), 4 MB x 32 bit (16 MB), and
8 MB x 32 bit (32 MB). When the standard SIMMs are removed, four 32-MB SIMMs may
be installed for a total of 128 MB.
SIMMs install directly in the four sockets on the system board. The four sockets are
assigned as SIMM 1 through SIMM 4. The two standard SIMMs (8 MB or 16 MB) are
installed in SIMM 1 and SIMM 2. SIMMs must be installed in pairs of the same memory
type. Jumpers are not required to set memory size or type, as the system BIOS
automatically detects the SIMMs. SIMM 1 and SIMM 2 must always be filled for the
system to operate. Table 1-6 shows the SIMM memory upgrade path.
Total Memory
8 MB
16 MB
16 MB*
24 MB
24 MB
32 MB
32 MB**
* Standard configuration for 16-MB systems
** Standard configuration for 32-MB systems
CAUTION: SIMMs must match the tin metal
plating used on the system board SIMM sockets.
When adding SIMMs, use only tin-plated
SIMMs.
Table 1-6 SIMM Memory Upgrade Path
SIMM 1
4 MB
4 MB
8 MB
4 MB
8 MB
8 MB
16 MB
SIMM 2 SIMM 3
4 MB Empty
4 MB 4 MB
8 MB Empty
4 MB 8 MB
8 MB 4 MB
8 MB 8 MB
16 MB Empty
SIMM 4
Empty
4 MB
Empty
8 MB
4 MB
8 MB
Empty