Commodore PET User Manual page 288

On PET power-up. value 12 is automatically POKEd into memory address
59468 (value 14 for the CBMl. activating the Standard Character Set. The PET
begins and remains in this mode until programmer intervention changes the
character mode. However, once the character sets are switched, the new
character set is displayed until either 1) the PET is turned off; whereas on power-
up the Standard Character Set is activated, or 2) the other character set is POKEd
into effect.
Turn
Power On
Standard
Character Set
Activated
Activate New
Character
Set
No
Screen
Display
Screen
Display
Changing character sets is done by POKEing a numeric value into memory
location 59468. POKE a numeric value from
a
to 11 or 14 to 255 into location
59468:
POKE 59468.12
POKE 59468.14
activate the Standard Character Set
activate the Alternate Character Set
To change from Standard to Alternate Character Set. type the following
statement in calculator mode:
POKE 59468,14
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