Single Inline Memory Modules (Simms); Figure 1-5 A Typical Simm - Toshiba Infinia 7130 Series Maintenance Manual

Single Inline Memory Modules (SIMMs)

Infinia™ Models 7130 and 7160 computers come equipped with two 72-pin, 8 MB, 60 ns
EDO DRAM (Extended Data Out Dynamic RAM) SIMMs delivering 16 MB of RAM.
Models 7161, 7200, 7201, and 7220 come equipped with two 72-pin, 16 MB, 60 ns EDO
DRAM SIMMs delivering 32 MB of RAM.
The system board provides four 72-pin SIMM sockets that make it possible to install up to
128 MB of RAM. The sockets support 1 x 32 (4 MB), 2 x 32 (8 MB), 4 x 32 (16 MB), and 8
x 32 (32 MB) single- or double-sided modules. Minimum memory size is 8 MB and
maximum size, using four 8 x 32 SIMMs, is 128 MB. Memory timing requires 70 ns fast page
devices, or for optimum performance, 60 ns EDO DRAM (as delivered).
The four sockets are arranged in two banks of two sockets each. The sockets are designated
Bank 0 and Bank 1. Both SIMMs in a bank must be of the same memory size and type,
although the types of memory may differ between banks.
No jumper settings changes are required when replacing or upgrading SIMMs. The BIOS
automatically detects any changes.
Use only tin lead SIMMs when replacing or upgrading DRAM.

Figure 1-5 A Typical SIMM

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