Boxing
BX301

60 QFP Chip labeled 
BX-301
287C
Nintendo

die labeled
KMS73B
KMS744

15 buttons
132 LCD segments
piezo

Sharp SM511

1  T        VDD
2  K1       right controller blue wire / Time button
3  K2       right controller red wire / Game B button
4  K3       left controller blue wire / Game A button
5  K4       left controller red wire / Alarm button
6  ACL      ACL button
7  BA       N/C
8  Gnd      batt+
9  Osc Out  crystal
10 Osc In   crystal
11 VDD      batt -
12 beta     N/C
13 R1       piezo
14 R2       N/C
15 bs
16 b16
17 a16
18 b15
19 a15
20 b14
21 a14
22 b13
23 a13
24 b12
25 a12
26 b11
27 a11
28 b10
29 a10
30 b9
31 a9
32 b8
33 a8
34 b7
35 a7
36 b6
37 a6
38 N/C
39 b5
40 a5
41 b4
42 a4
43 b3
44 a3
45 b2
46 a2
47 b1
48 a1
49 H4
50 H3
51 H2
52 H1
53 S1       Left controller yellow wire
54 S2       Right controller yellow wire
55 S3       Left controller white wire 
56 S4       Right controller white wire
57 S5       Left controller green wire
58 S6       Right controller green wire
59 S7       Game A, Game B, Time, Alarm buttons
60 S8       N/C

blue + yellow wires = punch
blue + green wires = right
blue + white wires = down
red + white wires = up
red + green wires = left


Buttons

      K1       K2       K3       K4
S1    --       --     L Punch    --
S2  R Punch    --       --       --
S3    --       --     L Down    L Up
S4  R Down  R Punch     --       --
S5    --       --     L Right  L Left
S6  R Right R Left      --       --
S7   Time    Game B   Game A   Alarm