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IBM 5155 User Manual

IBM 5155
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27 You must set a system board switch to reflect
the installation of the IBM Math Coprocessor
Option. Study the figure below. There are two
types of switch blocks on the system board:
rocker switch block and slide switch block.
Identify the type of switches
on
your system
board. Set Switch 2
to
the Off position.
Ballpoint
Do you have another internal option
to
install?
YES - Go to Step 17.
NO
- Make sure you set your system board
switch, then
go
to
Step 62 to install your
covers.
Option Installation
4-25

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IBM 5155 Specifications

General IconGeneral
ModelIBM 5155
CategoryDesktop
Release Year1984
CPUIntel 8088
Clock Speed4.77 MHz
Display9-inch monochrome CRT
RAM256 KB, expandable to 640 KB
StorageOne or two 5.25" 360KB floppy disk drives
GraphicsCGA (Color Graphics Adapter)
PortsParallel, Serial, Keyboard
Operating SystemIBM PC DOS
Weight30 pounds (13.6 kg)

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