MODE SWITCHING CHART
TO OFF
C128
40 COL
FROM
C128
80 COL
C64
CP/M
40 COL
CP/M
80 COL
C128
1.
Check that
1.
Press
ESC
key;
1
.
Check that
1. Check that 1.
Check that
40 COL
40/80
key is release.
40/80
key is
40/80
key is UP.
40/80
key is UP.
UP.
2.
Press
X
key.
UP.
2. Turn computer
2.
Turn computer
2.
Turn computer
OR 2
Turn computer OFF, then ON.
OFF, then ON.
ON.
1. Check that
OFF, then ON.
40/80
key is
UP.
2.
Press RESET
button.
C128
1.
Press
40/80
1.
Press
ESC
!.3y;
1.
Press
40/80*
1. Press
40/80
key 1.
Check that
80 COL
key DOWN.
release. key DOWN.
DOWN.
40/80
key is
2.
Turn computer
2.
Press
X
key.
2. Turn computer 2. Remove CP/M
DOWN.
ON
OR
OFF, then ON
system disk from
2. Remove CP/M
1
Press
40/80
drive, if
system disk from
key DOWN.
necessary. drive, if
2.
Press RESET
3
.
Turn computer
necessary.
button.
OFF, then ON.
3
.
Turn computer
OFF, then ON.
C64
1.
Hold
o
key
1.
Type
GO 64;
1.
Type
GO 64;
1.
Turn computer
1. Turn computer
DOWN. press
RETURN.
press
RETURN
OFF. OFF.
2.
Turn computer
2.
The computer
2. The computer
!
2.
Check that
40/
2.
Check that
40/
ON.
responds: responds:
80
key is UP.
80
key is UP.
OR ARE YOU SURE? ARE YOU SURE?
3
.
Hold DOWN
O
3
.
Hold DOWN o
1.
Insert C
64
Type
Y;
press Type
Y;
press
key while turning
key while turning
cartridge.
RETURN. RETURN.
computer ON.
computer ON.
2. Turn computer
OR
OR
ON.
1.
Turn computer
1.
Turn computer
OFF.
OFF.
2.
Insert C
64
2. Insert C
64
cartridge.
cartridge.
;
3
.
Turn power ON.
3
.
Turn power ON.
CP/M
1. Turn disk drive 1.
Turn disk drive
1.
Turn disk drive
1
Check that
1.
Insert CP/M
40 COL
ON.
ON. ON.
40/80
key is utilities disk in
2.
Insert CP/M
2.
Insert CP/M
2. Insert CP/M
UP drive.
system disk in
system disk in
system disk in 2 Turn disk drive 2.
At screen
drive drive. drive.
ON.
prompt,
A>
type:
3
.
Check that
3
. Check that
3
.
Check that
3
.
Insert CP/M
DEVICECONOUT: =
40
C
0
L
40/80
key is
40/80
key is
40/80
key is
system disk in
3
.
Press
RETURN.
UP. UP.
UP.
drive.
4
.
Turn computer
4
Type:
BOOT
4
.
Type:
BOOT 4
Turn computer
ON.
5
. Press
RETURN
5
. Press
RETURN
OFF, then ON.
CP/M
1. Turn disk drive
1.
Turn disk drive 1. Turn disk drive
1
.
Press
40/80
I
1 -
Insert CP/M
80 COL
ON. ON. ON.
key DOWN.
utilities disk in
2.
Insert CP/M 2.
Insert CP/M
2.
Insert CP/M
2
.
Turn disk drive
drive.
system disk in
system disk in
system disk in
ON.
! 2.
At screen
drive.
drive. drive. 3
Insert CP/M
prompt,
A>
type:
3
.
Press
40/80
3
.
Press
40/80
3
.
Check that system disk in
DEVICE CONOUT
=80
COL
key DOWN. key DOWN.
40/80
key is
drive.
3
.
Press
RETURN.
4
.
Turn computer
4
.
Type:
BOOT
DOWN. 4
Turn computer
ON.
5
.
Press
RETURN
4
.
Type:
BOOT
OFF, then ON.
5
. Press
RETURN
NOTE: If you are using a Commodore 1902 dual monitor, remember to move the video
switch on the monitor from COMPOSITE or SEPARATED to RGBI when switching from
40-column to 80-column display; reverse this step when switching from 80 to 40
columns. Also, when switching between modes remove any cartridges from the
expansion port and any disks from the disk drive.
2-5
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