Memory Option Switches - IBM 3270 Maintenance Manual

Memory Option Switches
The charts below show the switch settings for the
memory expansion options that can be installed
in the IBM 3270 Personal Computer.
These options are:
• 64/256KB Memory Expansion Option Adapter,
referred to as the "64/256KB Adapter" in the
chart below.
• 128KB Memory-Printer Adapter, referred to
as the "Memory-Printer" in the chart below.
• 256KB Memory-Printer Expansion Card,
referred to as the "256KB Plug-On Card" in
the chart below.
(The switches discussed are on the adapters.)
The Dual Inline Package (DIP) switch setting
charts in the following pages will show the
correct settings for your memory configuration.
Each chart shows the four or eight switches that
appear in each bank and a 1 or 0 to determine on
or off. The 1 under a switch number means that
the switch should be set on. The 0 under a switch
number means that the switch should be set off.
6-8 Maintenance Information