PLATOTERM Key Charts

Apple II Keyboard

The PLATO keyboard is mapped onto the Apple ][ keyboard. CTRL is used to access the special PLATO keys, with ESC acting as a SHIFT key in combination for shifted combinations.

PLATO KEY	Apple Key
ANS	CTRL-A
BACK	CTRL-B
SHIFT-BACK	ESC CTRL-B
COPY	CTRL-C
SHIFT-COPY	ESC CTRL-C
DATA	CTRL-D
SHIFT-DATA	ESC CTRL-D
EDIT	CTRL-E
SHIFT-EDIT	ESC CTRL-E
FONT	CTRL-F
÷	CTRL-G
HELP	CTRL-I
SHIFT-HELP	ESC CTRL-H
LAB	CTRL-L
SHIFT-LAB	ESC CTRL-L
SUPER	CTRL-P
SHIFT-SUPER	ESC CTRL-P
SQUARE	CTRL-Q
ACCESS	ESC CTRL-Q
STOP	CTRL-S
SHIFT-STOP	ESC CTRL-S
TERM	CTRL-T
×	CTRL-X
SUB	CTRL-Y
SHIFT-SUB	ESC CTRL-Y
Setup	CTRL-Z
Shift Lock (for Apple ][+	ESC ESC
--

For Apple ][+ systems, you can press ESC ESC to toggle and access the lowercase characters.

TBD: Map access keys (lots of special printable characters) onto Apple2 keyboard directly.

---

Atari 8-bit PLATO Keyboard

PLATO Keyboard

The PLATO keyboard is mapped to the Atari keys, like so:

PLATO KEY	Atari Key
ANS	CTRL-A
BACK	CTRL-B
SHIFT-BACK	CTRL- + (left arrow)
COPY	CTRL-C
SHIFT-COPY	CTRL- - (up arrow)
DATA	CTRL-D
SHIFT-DATA	SHIFT-CTRL-D
EDIT	CTRL-E
SHIFT-EDIT	SHIFT-CTRL-E
FONT	CTRL-F
÷	CTRL-G
HELP	CTRL-I
SHIFT-HELP	SHIFT CTRL-H
LAB	CTRL-L
SHIFT-LAB	CTRL-= (down arrow)
SUPER	CTRL-P
SHIFT-SUPER	SHIFT CTRL-P
SQUARE	CTRL-Q
ACCESS	SHIFT CTRL-Q
STOP	CTRL-S
SHIFT-STOP	SHIFT CTRL-S
TERM	CTRL-T
×	CTRL-X
SUB	CTRL-Y
SHIFT-SUB	SHIFT CTRL-Y
Setup	OPTION
Exit	SELECT X
Color up	SELECT -
Color down	SELECT =
Bright up	Select *
Bright down	Select +
CR and LF	Select RETURN

Commodore 64 PLATO Keyboard

The PLATO keyboard is mapped to the Commodore keys, like so:

PLATO KEY	C= Key
ANS	COMMODORE-A
BACK	COMMODORE-B
SHIFT-BACK	COMMODORE-SHIFT-B
COPY	COMMODORE-C
SHIFT-COPY	COMMODORE-SHIFT-C
DATA	COMMODORE-D
SHIFT-DATA	SHIFT-COMMODORE-D
EDIT	COMMODORE-E
SHIFT-EDIT	SHIFT-COMMODORE-E
FONT	COMMODORE-F
÷	COMMODORE-G
HELP	COMMODORE-I
SHIFT-HELP	SHIFT COMMODORE-H
LAB	COMMODORE-L
SHIFT-LAB	SHIFT-COMMODORE-L
SUPER	COMMODORE-P
SHIFT-SUPER	SHIFT COMMODORE-P
SQUARE	COMMODORE-Q
ACCESS	SHIFT COMMODORE-Q
STOP	COMMODORE-S
SHIFT-STOP	SHIFT COMMODORE-S
TERM	COMMODORE-T
×	COMMODORE-X
SUB	COMMODORE-Y
SHIFT-SUB	SHIFT COMMODORE-Y