Entex Baseball (1)

Chip labeled 
TMS1000NLP
MP0914
MAS ^ 7949

die labeled
MP0914A

7 buttons: Change Sides, Batter, Slider, Curve, Fast Ball, Change Up, Knuckler
2 switches: Manual/Auto and Pro/Am
1 7-segment LED
34 LEDs
Piezo buzzer


TMS1000 pinout
1  R8   - 7-segment LED common
2  R9   - Piezo
3  R10  - N/C
4  VDD
5  K1   - remote switches common
6  K2   - change sides button
7  K4   - manual/auto switch
8  K8   - batter button (other pole is VSS)
9  INIT - resistor/cap/diode
10 O7   - N/C
11 O6   - 7-segment G
12 O5   - 7-segment F / LED matrix
13 O4   - 7-segment E / LED matrix
14 O3   - 7-segment D / LED matrix
15 O2   - 7-segment C / LED matrix
16 O1   - 7-segment B / LED matrix
17 O0   - 7-segment A / LED matrix
18 OSC1 - OSC2 and 47 cap to VSS, 43K resistor to VDD
19 OSC2 - OSCa and cap and resistor
20 VSS
21 R0   - LED matrix
22 R1   - Change Up, Change Sides, Manual/Auto and LED matrix
23 R2   - Fast Ball button and LED matrix
24 R3   - Knuckler button and LED matrix
25 R4   - Curve button and LED matrix
26 R5   - Slider button and LED matrix
27 R6   - LED matrix
28 R7   - LED matrix


When in Pro mode, additional 150K resistor is connected between VDD and pins 18&19 to speed up game.

button matrix
        K1          K2           K4         K8
R1  Change Up  Change Sides  Manual/Auto  
R2  Fast Ball
R3  Knuckler
R4  Curve
R5  Slider
VSS                                       Batter


LED numbering
                                                         33  34

                                                         30  31  32
                                                         
                                25                       28  29
                                
                    24                      26
                                
                                21
                                
                                
            23                                      27
                  20            16            22
                          15          17
                          
                          
                    14                      18      
                                01  
                  13                          19
                                02
                                
                                03
                                
                                04
                                
                              05  06
                              
                            07  08  09
                            
                            10  11  12
                            

LED Matrix

    R0  R1  R2  R3  R4  R5  R6  R7
O0   2   5  19  18  22  27  30  33  
O1   3   7  16  17  21  26  31  34
O2   4  10  13  15  20  25  32  28
O3   8   6   1  14  23  24      29
O4  11   9
O5      12