Apollo-II PCI Pentium ISA Motherboard User’s Guide
10
Step 3 Install Memory
System Memory
The motherboard has four 32-bit SIMM – Single
Inline Memory Module) sockets. You can use Fast
Page Mode or EDO (Extended Data Out) SIMMs.
Memory must be populated one bank at a time.
Each bank has two sockets. Each bank must be
populated with the same type of SIMM. If a 1 MB
SIMM is installed in the first socket in Bank0, then
the same type of 1 MB SIMM must be installed in
the second Bank0 SIMM socket. Each socket can
hold one SIMM. You can use:
•
1 MB x 36,
•
4 MB x 36,
•
8 MB x 36, or
•
16 MB x 36, or
•
32 MB x 36 SIMMs.
The motherboard supports banks of fast page mode
and EDO (Extended Data Out) memory together
operating at 60 or 70 ns (RAS access time).
Memory Display
System memory is reported by AMIBIOS
as it boots and again when the AMIBIOS System
Configuration Screen is displayed just before the
operating system boots. The memory displayed by
AMIBIOS on the System Configuration Screen is
384 KB less than the total memory installed.
Select SIMMs
SIMMs must meet the following specifications:
Parameter
Specification
Page Mode
FAST or EDO
Refresh
CAS before RAS
t
CAC
≤
20 ns
t
RAC
≤
80 ns
t
AA
≤
45 ns
t
RP
70 ns
t
CPA
≤
45 ns
Cont’d
