IBM RT PC Options Installation page 174

Use this table to set the mode switches when any of the following conditions
are present:
• The mM Personal Computer Enhanced Color Display (5154) is
attached to the Enhanced Graphics Adapter.
• The mM Personal Computer Enhanced Color Display (5154) is
assigned to the AT Coprocessor Adapter in dedicated mode.
• Another display is also installed and assigned to the AT Coprocessor
Adapter as a second display.
IBM
5154
Display
IBM
5154
Display
Operating Mode or
Assignment Emulation Mode
Swl Sw2 Sw3
Sw4
Primary 80 X 25 High Off On On Off
Resolution
Primary 80 X 25 Enhanced On On On Off
Color
Secondary 80 X 25 High Off Off On On
Resolution
Secondary 80 X 25 Enhanced On Off On On
Color
If
you need to install the expansion card, go to "IBM PC Graphics Memory
Expansion Card" on page 7-10.
If
you need to install the expansion kit, go
to "mM PC Graphics Memory Expansion Kit" on page 7-11. To install
the adapter, go to page 7-12.
Section 7. Display Adapter Options
7-9