System Memory - NEC POWERMATE VE - SERVICE MANUAL 08-1996 Service Manual

1-8 Technical Information
Address (Hex)
378-37F
3B0-3BF
3C0-3CF
3D0-3DF
3F0-3F5, 3F7
3F8-3FF
CF8-CFF

System Memory

The non-multimedia V100e systems come standard with 8 MB of EDO memory: 640 KB of
base memory and 7 MB of extended memory. The non-multimedia V133e systems come
standard with either 8 MB or 16 MB of EDO memory. All multimedia configurations come
standard with 16 MB of EDO memory: 640 KB of base memory and 15 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. Non-multimedia systems ship with
two 4-MB SIMMs (8 MB total) installed in two sockets. The multimedia and V133e non-
multimedia configurations ship with two 8-MB SIMMs (16 MB total) installed in two
sockets.
The SIMM memory sockets accept 32-bit (non-parity) 4-, 8-, 16-, or 32-MB 70 ns 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. For non-multimedia configurations, the two
standard 4 MB SIMMs are installed in SIMM 1 and SIMM 2. For multimedia
configurations, the two standard 8 MB SIMMs are installed in SIMM 1 and SIMM 2.
SIMMs must be installed in pairs of the same memory type and speed. Jumpers are not
required to set memory size or type as the system BIOS automatically detects the SIMMs.
SIMM banks 1 and 2 must always be filled for the system to operate. Table 1-5 shows the
SIMM memory upgrade path.
Table 1-4 I/O Address Map
I/O Device Name
Parallel port 1
Mono display & printer adapter
EGA adapter
CGA adapter
Floppy controller (primary)
Serial port 1
PCI configuration space
CAUTION: SIMMs must match the tin metal
plating used on the system board SIMM sockets.
When adding SIMMs, use tin-plated SIMMs.