IBM Personal Computer

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)
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System Board
Switches
1 -
64/256K
option
with
192K
installed
1 -
32K
option
00
!.
s:
f(l
i
fA
I
..
\C
1 -
64/256K
option
with
128K
installed
1 -
64K
option
1 -
32K
option
288K
Total
Memory
224K
+
64K
on System Board
Switch
Block 1
Switch
Block 2
IfDOQQOOOO
I
64/256K
Option
Card
Switches
If~~~QQQ~O
I
li~~~QQ~QO
I
64K
Option
Card
Switches
I;~~QQ~~~~
I
liQQQ~~QQQ
I
32K
Option
Card
Switches
I;~Q~~~~~~
I
li~Q~~~~~~
I
s6U!U
a
S
IJ:lI!MS