IBM Personal Computer XT Manual To Operations page 223

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 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.
0 1 2 3 4 5 6 7 8 1 \
IBM Color/Graphics
Monitor Adapter in
the 4Ox25 Color mode
fDDDD~~DD
"
\
IBM Color/Graphics
Monitor Adapter in
the 80x25 Color mode
rDODO~~DD~
"
\
0 ' 2 3 4 5 . 7 8 1 \
IBM Monochrome Adapter
or both IBM Monochrome
fDDDD~~DD
Adapter and IBM Color
Graphics Monitor Adapter
"
\
0 ' 2 3 4
5678~
No Display
fDDDD~~DD
"
\
Note: The 40x25 Color mode means that there
will be 40 characters across the screen and 25 lines
down the screen. This mode is normally used with a
home television. The 80x25 Color mode means
there will be 80 characters across the screen and 25
lines down the screen. This mode, when used with
home televisioI1 and various displays, can cause loss
of character quality.
Switch Settings 4-9