IBM 5155 Manual To Operations page 310

Type of
Display
Connected
The following figure shows the settings for switches 5
and 6.
Note: The switch settings do not have to be
adjusted for the
mM
Color Display.
Warning: Before you change any switch settings,
make a note of how the switches are presently set.
Normal Setting with
2 3 4 5 6 7 8
no External Display
IBM Color Display or
other color display
or
~DDDD~~DD
in the 80X25 color
mode
2 3 4 5 6 7 8
IBM Color Display or
other color display
in the /I,OX25 color
mode
~DDDD~~DD
Note: The 40x25 mode means 40 characters across
the screen and 25 lines down the screen. The 40x25
mode is normally used with a home television. The
80x25 mode means 80 characters across the screen
and 25 lines down the screen. This mode, when
used with home televisions and various displays, can
cause loss of character quality.
4-82 Switch Settings