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en
COUNTER PIN (input or output)
On
the
watc:hdog timer board, the counter pin is cormected to
the
column 15 output.
On the
older non-watc:hdog version,
the
counter pin
is uncormected.
nus provides
the
keyboard processor
the
ability to
determine whic:h type of board i t i t is installed in, so
the
new
processor
can
work in old boards (with minor
c:hanges
to
the
board) •
NMI INPUT
nus is cormected to
vee
and will therefore never turn
on.
MATRIX TABLE
The following table
shows
whic:h keys are readable in
port
A
for eac:h
column you drive.
The key
code for eac:h key is also included (in hex) •
Column
15
(pD. 7)
14
(pD. 6)
13
(pD. 5)
12
(pD. 4)
11
(pD. 3)
10
(po.
2)
9
(po.
1)
Row 5
Row 4
Row 3
Row 2
Row 1
Row 0
(Bit 7) (Bit 6) (Bit 5) (Bit 4) lBit 3) (Bit 2)
+-------+-------+-------+-------+-------+-------+
I (spare) I (spare) I (spare) I (spare) I (spare) I (spare) I
I
I
I
I
I
I
I
I (OE)
I (lC)
I (2C)
I (47)
I (48)
I (49)
I
+-------+-------+-------+-------+-------+-------+
I (spare) I (LEFT I
CAPS
I
TAB
I
I
ESC
I
I
I SHIFT) I LOCK
I
I
I
I
I (5D)
I (30)
I (62)
I (42)
I (00)
I (45)
I
+-------+-------+-------+-------+-------+-------+
I (spare) I
Z
I
A
I
Q
I
I (spare) I
I
I
I
I
I
1
I
I
I (5E)
I (31)
I (20)
I (10)
I (01)
I (SA)
I
+-------+-------+-------+-------+-------+-------+
1 9 I X I S I W I @ I F l I
I (N.P.) I
I
I
I
2
I
I
I (3F)
I (32)
I (21)
I
(11)
I (02)
I (50)
I
+-------+-------+-------+-------+-------+-------+
I
6
I
C
I
D I E
I
#
I
F2
I
I(N.P.) I
I
I
I
3
I
I
I (2F)
I (33)
I (22)
I (12)
I (03)
I (51)
I
+-------+-------+-------+-------+-------+-------+
I
3
I
V
I F ,
R
,
$
,F3
I
I (N.P.) I
I
I
I
4
I
I
I (IF)
I (34)
I (23)
I (13)
I (04)
I (52)
I
+-------+-------+-------+-------+-------+-------+
I ·
I
B I G
I
T
I
%
I
F4
I
I (N.P.) I
I
I
I
5
I
I
I (3C)
I (35)
I (24)
,(14)
I (05)
I (53)
I
+-------+-------+-------+-------+-------+-------+
Column
8
(pD. 0)
7
(pc. 7)
6
(pc. 6)
5
(pc. 5)
4
(pc.4)
3
(pc. 3)
2
(pc. 2)
1
(pc. 1)
o
(pc. 0)
Row 5
Row 4
Row 3
Row 2
Row 1
Row 0
(Bit 7) (Bit 6) (Bit 5) (Bit 4) (Bit 3) (Bit 2)
+-------+-------+-------+-------+-------+-------+
I
8
N I H
Y
I
A
I
F5
I
I (N.P.) I
I
I
I
6
I
I
I (3E)
I (36)
,(25)
I (15)
I (06)
I (54)
I
+-------+-------+-------+-------+~------+-------+
I
5
I
M
I
J
I
U
I
&
I (spare) ,
I (N.P.) I
I
I
I
7
I
I
I (2E)
I (37)
I (26)
I (16)
I (07)
I (5B)
I
+-------+-------+-------+-------+-------+-------+
I
2
I
<
I
K
r
I
I
*
I
F6
I
I (N.P.) I
, I
I
I
8
I
I
I (lE)
I (38)
I (27)
I (17)
I (08)
I (55)
I
+-------+-------+-------+-------+-------+-------+
I ENTER I
>
L
I
0
I
(
I (spare) I
I (N.P.) I ·
I
I
9
I
I
I (43)
I (39)
I (28)
I (18)
I (09)
I (SC)
I
+-------+-------+-------+-------+-------+-------+
I
7
I ?
I
P I )
I F7
I
I(N.P.) I
/
I
;
I
I
0
I
I
I (3D)
I (JA)
I (29)
I (19)
I (OA)
I (56)
I
+-------+-------+-------+-------+-------+-------+
I
4
I (spare) I
"
I
{ I
I F8
I
I (N.P.) I
I
I
[ I
I
I
I (2D)
I (3B)
I (2A)
I (lA)
I (OB)
I (57)
I
+-------+-------+-------+-------+-------+-------+
I
1
I
SPACE
I (RET) I
}
I
+
I F9
I
I (N.P.) I
BAR
I
I ]
I
=
I
I
I (10)
I (40)
I (2B)
I (lB)
I (OC)
I (58)
I
+-------+-------+-------+-------+-------+-------+
I
0
I
JWlC
I DEL
I
RET
I
I
I
FlO
I
I (N.P.) I
SPACE
I
I
I
\
I
I
I (OF)
,(41)
I (46)
I (44)
I (OD)
I (59)
,
+-------+-------+-------+-------+-------+-------+
I
-
I CURS
I CURS
I CURS
I CURS
I HELP
I
I (N.P.) I
[)()oIN
,RIGHT I LEFT
I
UP
I
I
I (4A)
'(40)
I (4E)
'(4F)
'(4C)
I (SF)
I
+-------+-------+-------+-------+-------+-------+
The
following table
shows
whic:h keys are readable in
port
B
(shift
keys) •
(Bit 6) (Bit 5) (Bit 4) (Bit 3) (Bit 2) (Bit 1) (Bit 0)
+-------+-------+-------+-------+-------+-------+-------+
,LEFT
,LEFT
,LEFT
,cnu.
,RIGHT I RIGHT , RIGHT ,
, AMIGA ,AtT
I SHIFT ,
, AMIGA I AtT
I SHIFT I
I (66)
'(64)
I (60)
'(63)
I (67)
'(65)
,(61)
I
+-------+-------+-------+-------+-------+-------+-------+
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