Tandy Baseball Chip labeled PIC 1650A-133 GI 8019 6 buttons: Batter, Change Up/Fielder, Curve Right, Curve Left, Fast, Slow 1 switch: Man/Auto Piezo buzzer LEDs: 36 LEDs 3-digit 7-segment LED PIC1650A pinout 1 VSS - battery negative 2 RA0 - Piezo 3 RA1 - N/C 4 RA2 - Curve Right button 5 TEST - VSS 6 RA3 - Slow button 7 RA4 - Fast button 8 RA5 - Curve Left button 9 RA6 - Change Up/Fielder button 10 RA7 - Batter button 11 RB0 - 7-segment LED dot in upper left 12 RB1 - segment G 13 RB2 - segment F 14 RB3 - segment E 15 RB4 - segment D 16 RB5 - segment C 17 RB6 - segment B 18 RB7 - segment A 19 RC0 - LED matrix 20 RC1 - LED matrix 21 RC2 - LED matrix 22 RC3 - LED matrix 23 RC4 - LED matrix 24 RC5 - LED matrix 25 RC6 - LED matrix 26 RC7 - LED matrix 27 RD0 - LED matrix and center 7-segment digit 28 RD1 - LED matrix and right 7-segment digit 29 RD2 - LED matrix and left 7-segment digit 30 RD3 - LED matrix 31 RD4 - LED matrix 32 RD5 - LED matrix 33 RD6 - N/C 34 RD7 - Auto/Man switch (auto grounds input) 35 CLK OUT - /RTCC - measured at 225kHz 36 OSC - 22K resistor to VDD, 47pf cap to VSS 37 /MCLR - diode and resistor 38 /RTCC - CLK OUT 39 VDD - battery positive 40 VXX - VDD 7-segment LEDs 8 8 8 B7 B6 B5 B4 B3 B2 B1 B0 D0 center digit A B C D E F G D1 right digit A B C D E F G upper left dot D2 left digit A B C D E F G upper left dot LED matrix C7 C6 C5 C4 C3 C2 C1 C0 D0 27 1 V H -- -- -- -- D1 3 2 4 5 26 14 10 15 D2 12 6 9 7 11 8 13 16 D3 -- -- -- 21 19 20 18 17 D4 -- -- OUT 2 OUT 1 22 25 24 23 D5 STRIKE 2 STRIKE 1 -- -- -- BALL 3 BALL 2 BALL 1 LED locations S1 S2 V B1 B2 B3 O1 O2 H 2 3 4 1 5 6 7 8 9 10 11 12 13 14 16 15 17 18 19 20 21 23 22 24 25 26 27