System-Board Switch Settings - IBM 5150 Technical Reference

System-Board Switch Settings
All system board switch settings for total system memory, number
of diskette drives, and type of display adapter are described under
"Switch Settings" in the IBM Personal Computer
Guide to
Operations.
The diagram showing the system board switch
locations follows.
Cassette I/O
System Expansion Slots
System
J 1 0 J2 J3 J4 OJ5
o Board
Power
Connections
D
Clock
Trimmer
o
0 0
0
Chip
11
Read
IBM Math
Only
Coprocessor
Memory
Cl Intel 8088
000000 ODIDDOIO
Microprocessor
DIP
Switch
D°
DDD"DO
ON
Block 2
DIP
64 to 256K
Switch
Read/Write
Block 1
:0-
-ODOOOODOlOODDDDD
: 0 OOOODDDD\DODDDDD
Memory
with
:0 00000000:0000000
Parity
Checking
;0 00000000:0
0
DODD
-0-
qP3-
--5
-Oap4­
-c:>- •
T\
~
Cassette
...
~ Microphone
Pin 1 Speaker Output or Auxiliary
Select
System Board 1-33