IBM Personal Computer

)
)
)
384K
Total
Memory
128K
+
256K
on System Board
System Board
Switches
Switch
Block 2
Switch
Block 1
liOOQQOooO
I
li~Q~Q~QQQ
I
I
I
64/256K
Option
64K
Option
32K
Option
Card
Switches
Card
Switches
Card
Switches
1 -
64/256K
option
with
64K
installed
1 -
64K
option
li~Q~~~QQQ
I
I;~Q~Q~~~~
I
If~Q~~~~~~
I
2 -
64K
options
I;~Q~Q~~~~
I
If~Q~Q~~~~
I
1 -
64/256K
option
with
64K
installed
2 -
32K
options
If~Q~~~QQQ
I
!
li~Q~QQ~~~
I
00
!.
s:
li~Q~Q~~~~
I
I
1 -
64K
option
2 -
32K
options
li~Q~~~~~~
I
If~Q~QQ~~~
I
(II
1 -
64/256K
option
with
1
28K
installed
I
li~Q~~Q~QQ
I
.a:..
I-l
s6u!n
a
s
l/:JJ!MS