ELECsonic Football Chip labeled MP0170 MSL ^ 7936 die labeled MP0170 6 buttons: K, ST, SC, Forward, Back, Left/Right 1 switch: 1/2 Players 7 7-segment LEDs 3x9 array of LEDs Piezo buzzer DS8874N 9-digit shift input LED driver TMS1000 pinout 1 R8 - N/C 2 R9 - keypad 3 R10 - switch and keypad 4 VDD 5 K1 - keypad 6 K2 - keypad 7 K4 - keypad 8 K8 - keypad and R0 9 INIT - switch (so changing from 1 to 2 players will reset game) 10 O7 - DP 11 O6 - G 12 O5 - F 13 O4 - E 14 O3 - D 15 O2 - C 16 O1 - B 17 O0 - A 18 OSC1 - OSC2 and 47 cap to VSS, 39K resistor to VDD 19 OSC2 - OSC1 20 VSS 21 R0 - DS8874N-1 clock and K8 22 R1 - DS8874N-2 /DATA 23 R2 - LED array row 3 24 R3 - LED array row 2 25 R4 - LED array row 1 26 R5 - N/C 27 R6 - Piezo and 1K resistor to VDD 28 R7 - Piezo and 1K resistor to VDD button matrix K1 K2 K4 K8 R9 Back Forward Left/Right -- R10 K SC ST 1 Player LEDs d8 d7 d6 d5 d4 d2 d1 - - - - - - - | | | | | | | | | | | | | | - - - - - - - | | | | | | | | | | | | | | - - - . - . - . - - col 9 col 8 col 7 col 6 col 5 col 4 col 3 col 2 col 1 row 3 - - - - - - - - - row 2 - - - - - - - - - row 1 - - - - - - - - -