Mattel Dungeons and Dragons Computer Labyrinth Game

Chip labeled 
M34012-N2LL
DES 8209
PHILIPPINES

die labeled
M34012

72 buttons
speaker


TMS1100 pinout
1  R8   - button matrix
2  R9   - button matrix
3  R10  - speaker
4  VDD  - battery - 
5  K1   - button matrix
6  K2   - button matrix
7  K4   - button matrix
8  K8   - button matrix
9  INIT - resistor to VDD
10 O7   - button matrix
11 O6   - button matrix
12 O5   - button matrix
13 O4   - button matrix
14 O3   - button matrix
15 O2   - button matrix
16 O1   - button matrix
17 O0   - button matrix
18 OSC1 - 100pF disc cap to VSS, 27K resistor to VDD
19 OSC2 - OSC1
20 VSS  - battery + via switch
21 R0   - button matrix
22 R1   - button matrix
23 R2   - button matrix
24 R3   - button matrix
25 R4   - button matrix
26 R5   - button matrix
27 R6   - button matrix
28 R7   - button matrix


Speaker Connection

Pin 3 of TMS1100 to base of 2N2222 transistor
Collector to VSS
Emitter to 68 ohm resistor to speaker lead
other speaker lead to cap and diode in parallel to VSS
10uF electrolytic cap to VSS and small signal diode to VSS


Input matrix

K1 is rows 1 and 5
K2 is rows 2 and 6
K4 is rows 3 and 7
K8 is rows 4 and 8

R9 is rows1-4 of column 1
R0 is rows5-9 of column 1
R1 is rows1-4 of column 2
O0 is rows5-9 of column 2
R2 is rows1-4 of column 3
O1 is rows5-9 of column 3
R3 is rows1-4 of column 4
O2 is rows5-9 of column 4
R4 is rows1-4 of column 5
O3 is rows5-9 of column 5
R5 is rows1-4 of column 6
O4 is rows5-9 of column 6
R6 is rows1-4 of column 7
O5 is rows5-9 of column 7
R7 is rows1-4 of column 8
O6 is rows5-9 of column 8
R8 is rows1-4 of column 9
O7 is rows5-9 of column 9


           Col 1       Col 2       Col 3       Col 4       Col 5       Col 6       Col 7       Col 8       Col 9
           
Row 1     Switch        
K1          Key         R1          R2          R3          R4          R5          R6          R7          R8
            R9

Row 2    Next Turn      
K2       Level 1/2      R1          R2          R3          R4          R5          R6          R7          R8
            R9

Row 3  Dragon Flying    
K4      Defeat Tune     R1          R2          R3          R4          R5          R6          R7          R8
            R9

Row 4 Dragon Attacks    
K8     Dragon Wakes     R1          R2          R3          R4          R5          R6          R7          R8
            R9

Row 5      Wall         
K1         Door         O0          O1          O2          O3          O4          O5          O6          O7
            R0

Row 6  Illegal Move     
K2    Warrior Moves     O0          O1          O2          O3          O4          O5          O6          O7
            R0

Row 7   Warrior 1       
K4        Winner        O0          O1          O2          O3          O4          O5          O6          O7
            R0

Row 8   Warrior 2       
K8      Treasure        O0          O1          O2          O3          O4          O5          O6          O7
            R0