Cardinal Basketball

Chip labeled 
MP0907
MBSL 7919
SINGAPORE

die labeled
MP0907

5 buttons: U/D/L/R, Shoot
1 switch: skill 1/2
2 7-segment LEDs
30 LEDs
Piezo buzzer


TMS1000 pinout
1  R8   - digit 2 (left)
2  R9   - piezo
3  R10  - K1
4  VDD  - batt -
5  K1   - R10 and skill 2 switch and right button
6  K2   - shoot and up buttons
7  K4   - down button
8  K8   - left button
9  INIT - VDD
10 O7   - N/C
11 O6   - G
12 O5   - F / column 1 (right)
13 O4   - E / column 2
14 O3   - D / column 3
15 O2   - C / column 4
16 O1   - B / column 5
17 O0   - A / column 6 (left)
18 OSC1 - OSC2 and 47pF cap to VSS, 39K resistor to VDD
19 OSC2 - OSC1
20 VSS  - batt + via switch
21 R0   - skill button and shoot switch common
22 R1   - UDLR common
23 R2   - LED row 1 (bottom)
24 R3   - LED row 2
25 R4   - LED row 3
26 R5   - LED row 4
27 R6   - LED row 5 (top)
28 R7   - digit 1 (right)


button matrix

        K1          K2           K4         K8
R0    Skill 2     Shoot          --         --
R1     Right        Up          Down       Left
R10  connected      --           --         --  


LEDs

   O0  O1  O2  O3  O4  O5
R6  o   o   o   o   o   o
R5  o   o   o   o   o   o
R4  o   o   o   o   o   o
R3  o   o   o   o   o   o
R2  o   o   o   o   o   o


  R8        R7
  
  O0        O0
O5  O1    O5  O1
  06        O6
O4  O2    O4  O2
  O3        O3