Switch
Block
2
fDDDDD~~~~
" \
Switch Function
1,2,3,4,5 Amount of memory options installed
6,7,8 Always in the Off position
Notes:
1.
The system board must be fully populated, 64KB
of
memory, before a memory expansion option can be
installed.
2.
To
expand the memory
of
your system beyond
544K requires your IBM Personal Computer System
Unit to have a BIOS
ROM
module dated
10/27/82
or
later. To determine the date
of
your
ROM
module, run the following BASIC program. Type
the program exactly as shown.
10
DEF
SEG=&HFOOO
20
FOR
X=&HFFF5
TO
&HFFFF
30
PRINT
CHR$(PEEK(X));
40
NEXT
RUN
3. The date that
is
displayed
is
the date
of
your
ROM
module. Contact your authorized IBM Personal
Computer dealer for a
ROM
module if it
is
needed.
Switch Settings
5-9
To Next Page
Loading...
