IBM PC 100, Technical Manual

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Chapter 3. Memory Subsystems
Memory-Module Description
PC 100 and PC 300 computers have four SIMM connectors. After memory modules are installed, the
Plug and Play feature of the BIOS automatically detects the additional memory modules.
Notes:
1. Memory modules can have a maximum height of 1.2 inches.
2. Parity checking is not supported.
3. A mix of parity and non-parity SIMMs will be configured as non-parity.
4. A mix of extended-data output (EDO) and fast page (FP) SIMMs can be installed in the PC 300 if
matched pairs are installed in each bank.
Memory-Module Configurations
The following tables show the typical memory-module configurations for the PC 100 and PC 300.
Figure 26. Memory-Module Type, Speed, and Size – PC 100
Type Speed Memory-Module Size
Fast page 70 ns 4 MB, 8 MB, 16 MB, 32 MB
Figure 27. Memory-Module Type, Speed, and Size – PC 300
Type Speed Memory-Module Size
EDO (preinstalled) 60 ns 4 MB, 8 MB, 16 MB, 32 MB
Fast page (supported) 70 ns 4 MB, 8 MB, 16 MB, 32 MB
Figure 28. System Memory Table
Total
Memory
Bank 0
SIMM 1, 2
Bank 1
SIMM 3, 4
4 MB
ñ
4, 0 0, 0
8 MB 4, 4 0, 0
16 MB 0, 0 8, 8
16 MB 4, 4 4, 4
24 MB 8, 8 4, 4
24 MB 4, 4 8, 8
32 MB 8, 8 0, 0
32 MB 0, 0 8, 8
40 MB 4, 4 16, 16
40 MB 16, 16 4, 4
48 MB 8, 8 16, 16
64 MB 16, 16 16, 16
64 MB 32, 32 0, 0
72 MB 4, 4 32, 32
80 MB 8, 8 32, 32
96 MB 16, 16 32, 32
128 MB 32, 32 32, 32
ñ
A 4 MB, single SIMM is supported by the PC 100 only.
Chapter 3. Memory Subsystems
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