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Your AMI 386SX motherboard memory system consists of four 32-bit Dynamic Random
Access Memory (DRAM) memory banks.
line memory module (SIMM) DRAM's.
memory bank location.
If your motherboard is installed in the system and you are adding memory,
it is highly recommended to remove the motherboard before attempting to
install SIMM cards.
cause the board to flex and damage could occur at the standoff area's.
5.1
Installing SIMM modules
You may use either 256Kx9 or 1Mx9 SIMM card's.
SIMM card's and be filled as follows; Bank 0, or bank 0 and bank 1, or all
banks.
No other combination is allowed.
Table 5.1 SIMM Card Memory Configuration
256Kx9XXXXX
XXXXX XXXXX
XXXXX XXXXX XXXXX XXXXX
1Mx9XXXXX
XXXXX XXXXX
XXXXX XXXXX XXXXX XXXXX
You should use only one type of memory module on the motherboard.
Table 5.2 for suggested manufacturers and part numbers.
Table 5.2 SIMM Card Part Numbers
256Kx9
16 MHz
1Mx9
16MHz
Please refer to figure 1-1 for reference to
NOTE
The force required to insert the SIMM cards could
512KB
1MB
2MB
2MB
4MB
8MB
Hitachi
Hitachi
Hitachi
Fujitsu
Mitsubishi MH1M09A0JA-12
NEC
MC-421000A9-12
Toshiba
THM91000S-12
Fujitsu
Mitsubishi MH1M09A0JA-10
NEC
MC-421000A9-10
Toshiba
THM91000S-10
All banks are designed to use Single in-
Each SIMM bank must contain two
Table 5.1 shows memory configuration.
SIMM
BANK0 BANK1 BANK2 BANK3 MEMORY
TYPE
Type
SIMM
Manufacturer
HB561409BL-12
HB561409B-10
HB561409BL-10
MB85235-12
MB85235-10
SIZE
Refer to
Board
Speed
Part Number
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