This Is heavyweight champ schematics from an italian video

Netlist;

(net 1 +5V)

(net 2 GND)

(net 3 HANDLE_PULSE)

(net 4 PUNCH_VALID)

(net 5 BODY_HIT)

(net 6 FEET_HIT)

(net 7 HEAD_HIT)

(net 8 BODY_COUNT_CLK)

(net 9 DOWN_LATCH)

(net 10 KO)

(component U1 SN7474)

(pin U1 14 +5V)

(pin U1 7 GND)

(pin U1 3 HANDLE_PULSE)

(pin U1 2 PUNCH_VALID)

(component U2 SN7489)

(pin U2 16 +5V)

(pin U2 8 GND)

(pin U2 1 BODY_HIT)

(pin U2 2 FEET_HIT)

(pin U2 3 HEAD_HIT)

(pin U2 6 BODY_COUNT_CLK)

(component U3 SN7490)

(pin U3 14 +5V)

(pin U3 7 GND)

(pin U3 1 BODY_COUNT_CLK)

(pin U3 12 DOWN_LATCH)