Commodore 128D - Switching between Modes

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Switching
Between Modes
To switch from one mode to another, follow the instructions below for
the mode that you want to switch to.
C128
40 COL
1. Check that CP/M disk is not in the disk drive.
2. Check that 40/80 key is UP.
3. Press RESET.
C128
80 COL
1. Check that CP/M disk is not in the disk drive.
2. Check that 40/80 key is DOWN.
3. Press RESET.
C64 Hold o key DOWN while pressing RESET.
NOTE: Installing any C64 cartridge in the expansion port will automatically
cause the 128 to assume C64 mode when you turn it on.
CP/M
40 COL
1. Check that the 40/80 key is UP.
2. Insert CP/M system disk in drive.
3. Press RESET.
CP/M
80 COL
1. Check that the 40/80 key is DOWN.
2. Insert the CP/M system disk in drive.
3. Press RESET.
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.
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INTRODUCTION—Overview of the Commodore C128 Personal Computer