Alpha Controller Board (Internal Display) - NCR PC4i Owner's Manual

OPTIONS INSTALLATION
The SW1 switch setting is:
Leave the other switches set as they are. In this position, when you
turn on your system the monochrome display is activated. You must
use your NCR-DOS mode commands to switch to the color display.
If you do not have a monochrome display in your system, change the
switches to the appropriate setting (see Figure 3-12). The SW1 switch
location is shown in Figure 3-10.
The SW1 switch settings for are:
Color/Graphics (40x25)
Color/Graphics (80x25)
SW1
Graphics 40 x 25
Figure 3-12

Alpha Controller Board (Internal Display)

Your computer is delivered with this board installed when you order a
unit with one flexible disk drive and a monochrome display. The
controller board provides both text and block graphics.
This feature board can be used in a system that is also supporting a
freestanding color display. Refer to the board installation section to
install the board and set the switches on the MPB so that the
computer starts in the monochrome mode to prevent possible damage
to the displays (see Figure 3-13). The SW1 location on the MPB is
shown in Figure 3-10.
The switch settings are:
SW1 switches 5 and 6 to OFF.
Figure 3-13
3-12
5 and 6 to OFF
Freestanding Color/Display Switch Settings
SW l
1 2
4
3
—
— —
0 0 0
o
O O o O
LJ LJ
_
u
ON
Monochrome Display Switch Settings
5 OFF and 6 ON
5 ON and 6 OFF
ON
6
e
5 7
0 0
-
" -
□ □
o O
LJ
_
L J
SW1
OWNER'S MANUAL