MZ-700 / 800 Keyboard Map

written by Maurice Hawes
Source: SUC-magazine July 2001, Volume 21, Number 2, p. 12

A map similar to the one below, but rotated through 90 degrees and with no TAB key and no identifying label for the 'Blank Key', appears on page 142 of the MZ-700 Owner's Manual.

A map identical to the one below, but rotated through 90 degrees appears on p. 25 of the MZ-800 TECHNICAL MANUAL.

( Note that unused points in the matrix are indicated by two rows of "****" )

		KEY DATA BITS
		0	1	2	3	4	5	6	7
		X= $01	$02	$04	$08	$10	$20	$40	$80
		( Bit is zero if key is pressed )
Y =	$F0	CR	* :	+ ;	(800) TAB	ALPHA	£ \|	GRAPH	BLANK KEY
	$F1	** **	** **	** **	} ]	{ [	' @	Z	Y
	$F2	X	W	V	U	T	S	R	Q
	$F3	P	O	N	M	L	K	J	I
	$F4	H	G	F	E	D	C	B	A
	$F5	8	7	6	5	4	3	2	1
	$F6	> .	< ,	9	0	SPACE	= -	~	\
	$F7	/	?	LEFT	RIGHT	DOWN	UP	HOME DEL	CLR INST
	$F8	SHIFT	** **	** **	** **	** **	** **	CTRL	BREAK
	$F9	** **	** **	** **	F10 F5	F9 F4	F8 F3	F7 F2	F6 F1

NOTE that the two SHIFT keys are mapped to the same point on the matrix. Therefore, you can STROBE row $F8 and check KEY DATA BIT 0, which will be ZERO if one of the two SHIFT keys is being pressed.

( It will also be ZERO if both SHIFT keys are being pressed simultaneously, but that is a rather academic point ).