Tiger 7 in 1 Sports Stadium


Chip labeled 
MP7304
MAL ^ 8227
Philippines

die labeled
TMS1400
MP7304A
28L 01D O000 R300


12 buttons: P1 and P2 UDLR, start and serve
1 switch: 1/2 players
39 LEDs
4 7-segment LEDs
piezo


TMS1400 pinout
1  R0   button matrix and digit 1 (right)
2  R1   button matrix and digit 2
3  R2   button matrix and digit 3
4  R3   digit 4 (left)
5  R4   LED row 1 (bottom)
6  R5   LED row 2
7  R6   LED row 3
8  R7   LED row 4
9  R8   LED row 5 (top)
10 R9   piezo
11 R10  1/2 player switch
12 Vdd  9v battery negative
13 Init diode and cap
14 K1   button matrix
15 K2   button matrix
16 K4   button matrix
17 K8   button matrix
18 O7   in-between LEDs ABCD
19 O6   segment G / LED column 1 (right) 
20 O5   segment F / LED column 2
21 O4   segment E / LED column 3
22 O3   segment D / LED column 4
23 O2   segment C / LED column 5
24 O1   segment B / LED column 6
25 O0   segment A / LED column 7 (left)
26 OSC  pin 27 and 47pF cap to Vss and 47K resistor to Vdd
27 OSC  pin 26
28 Vss  9v battery positive via switch


keypad matrix
       K1         K2         K4         K8
R0   P2 Down    P2 Up     P2 Right    P2 Left
R1  P2 Serve   P1 Serve   P2 Start    P1 Start
R2    P1 Up    P1 Down    P1 Left     P1 Right
R10 2 Players     --         --         --


LEDs (player 1 on right)

     8   8           8   8


R8 o   o   o   o   o   o   o

R7 o   o   o   o   o   o   o
                         D
R6 o   o   o   o   o A o B o
                         C
R5 o   o   o   o   o   o   o

R4 o   o   o   o   o   o   o

   O0  O1  O2  O3  O4  O5  O6
 
A=O7 + R7
B=O7 + R6
C=O7 + R5
D=O7 + R4