IBM Personal Computer XT Manual To Operations page 267

Switch Setting Charts
System Board Switches
WARNING: Before you change any switch settings, make a note
of how the switches are presently set.
Switch Block 1
~DOODDDDO
Switch Function
1,7,8 Number of 5 % inch diskette drives installed
2 Coprocessor
3,4 System board memory switches
~
5,6
Type(s) of display(s) connected
Switch Block 2
Switch Function
1,2,3,4,5 Amount of memory options installed
6,7,8 Always in the Off position
April 1983
© Copyright IBM Corp. 1983
Switch Settings 3