IBM Personal Computer Manual To Operations page 253

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Types of Displays
The following figures show how switches 5 and 6 must
be set for the type of display attached.
Warning:
If
an IBM Monochrome Display is
connected to your system, switches 5 and 6 on
switch block 1 must be Off. Damage to your display
can result from incorrect switch settings.
Warning: Damage to your IBM Monochrome
Display may result if it is connected to an IBM
Color/Graphics Monitor Adapter.
Switch Block 1
Switch Block 2
IBM Color Graphics
Monitor Adapter in the
40x25 Color mode
IBM Color Graphics
Monitor Adapter in the
80x25 Color mode
IBM Monochrome Adapter
or both IBM Monochrome
Adapter and IBM Color
Graphics Monitor Adapter
No Display
Note: The 40x25 Color mode means that there are
40 characters across the screen and 25 lines down
the screen. This mode is normally used with a
television. The 80x25 Color mode means there are
80 characters across the screen and 25 lines down
the screen. This mode, when used with a TV or
some other display, can cause loss of character
quality.
Switch Settings 5-35

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