Keytbl() purpose is to read and modify the tables used by the system to map a scancode (hardware position of a key on a keyboard) to an ASCII code.

16 (0x10)

All TOS versions.

normal is the mapping table used for an unshifted key.
shift is the mapping table used when any shift key si pressed.
caps is the mapping table used when caps lock is enabled.
Pass KT_NOCHANGE (-1) if you don't want to modify one of the tables.

	pea	caps
	pea	shift
	pea	normal
	move.w	#$10,-(sp)
	trap	#14
	lea	14(sp),sp

Keytbl() returns a pointer to the KEYTAB structure.

The LogicalScreen is the memory area where the VDI does any drawing (See LogicalScreen for more details).