Parker Brothers Lost Treasure

Chip labeled 
M34038-NLL
DES 8218
PHILIPPINES


17 buttons
11 LEDs
piezo


TMS1100 pinout
1  R8   - LED 9 (West)
2  R9   - LED 10 (East)
3  R10  - LED 11 (Center)
4  VDD  - battery - 
5  K1   - keypad matrix
6  K2   - keypad matrix
7  K4   - keypad matrix
8  K8   - keypad matrix
9  INIT - cap/diode
10 O7   - 68 ohm resistor to piezo
11 O6   - 180 ohm resistor to piezo
12 O5   - 220 ohm resistor to piezo
13 O4   - 330 ohm resistor to piezo
14 O3   - keypad matrix
15 O2   - keypad matrix
16 O1   - keypad matrix
17 O0   - keypad matrix
18 OSC1 - 100pF disc cap to VSS, 39K resistor to VDD
19 OSC2 - OSC1
20 VSS  - battery + via switch
21 R0   - LED 1 (lowest)
22 R1   - LED 2
23 R2   - LED 3
24 R3   - LED 4
25 R4   - LED 5
26 R5   - LED 6 (highest)
27 R6   - LED 7 (North)
28 R7   - LED 8 (South)


Keypad Matrix
        K1       K2         K4          K8
    --------  --------  ----------  ----------
O0      1        2          3           4
O1      5        6          7           8
O2      9      Clear      Air/Up      Value
O3  Gray E/W  Gray N/S  Orange E/W  Orange N/S

Air and Up are connected together.


LED Layout

        7
        
6    9  11  10
5
4       8
3
2
1


Piezo Connection

Pins 10-13 of TMS1100 each connect to a resistor to one wire of the piezo
Other wire of piezo is connected to batt -
Diode across piezo wires: cathode on resistor side, anode on batt - side