System Board Switches - IBM 3270 Maintenance Manual

System Board Switches
The eight position DIP switch is used to provide
the IBM 3270 Personal Computer with
information on what it has installed. The
function of the individual positions is indicated
below. Specific information on the proper switch
settings for the IBM 3270 Personal Computer are
indicated on the following pages.
Switch Function
1
Normal operation; always Off
2 Coprocessor
3-4 Amount of memory on the system board
5-6 Type of display attached
7-8 Number of 5-1/4 inch diskette drives
installed
October 1984 6-3