CHAPTER 2
HARDWARE INSTALLATION
2-19
1. Make sure that the SIMM banks are using the same type and equal size
density memory.
2. To operate properly, at least two 72-pin SIMM module must be installed in
the same bank or one 168-pin DIMM module must be installed. The
system cannot operate with only one 72-pin SIMM module.
3. Before using SIMM and DIMM modules, look at the chart below and the
chart on the next page.
2.6-3 Memory Population Rules
A. 32MB SDRAM Configuration
DIMM1 DIMM2 DIMM3 SIMM1/SIMM2
D/S
D/S
D
N
D/S
D/S
S
S
D/S
D/S
N
D/S
B. 64MB SDRAM Configuration
DIMM1 DIMM2 DIMM3 SIMM1/SIMM2
D/S
D/S
N
N
D-Double
S-Single
N-None
4. Each RAS can not exceed 16 pcs of DRAM.
5. It is not recommended to mix 3V SDRAM with 5V EDO/FP, for it may
cause unreliability.
