Coleco Head to Head Hockey Chip labeled TMS1000NLL E MP3321A WE 8009 SINGAPORE die labeled 1000E MP3321A 8 buttons: P right, P left, D, S, D left, D right, G left, G right 2 switches: Skill 1/2, Players 1/2 2 7-segment LEDs 48 LEDs Piezo buzzer TMS1000 pinout 1 R8 - Piezo 2 R9 - K8 and 15uf cap 3 R10 - N/C 4 VDD - batt - 5 K1 - buttons: P right, S, D right, G right 6 K2 - buttons: P left, D, D left, G left 7 K4 - Players switch, Skill switch 8 K8 - R9 9 INIT - VDD 10 O7 - 7-segment G 11 O6 - 7-segment F 12 O5 - 7-segment E / LED matrix 13 O4 - 7-segment D / LED matrix 14 O3 - 7-segment C / LED matrix 15 O2 - 7-segment B / LED matrix 16 O1 - 7-segment A / LED matrix 17 O0 - N/C 18 OSC1 - OSC2 and 100p cap to VSS, 43K resistor to VDD 19 OSC2 - OSC1 20 VSS - batt + via switch 21 R0 - LED matrix 22 R1 - LED matrix 23 R2 - LED matrix 24 R3 - LED matrix 25 R4 - LED matrix 26 R5 - LED matrix 27 R6 - LED matrix 28 R7 - LED matrix button matrix K1 K2 K4 R0 P right P left 2 Players R1 S D -- R2 D right D left Skill 2 R3 G right G left -- LED matrix R7 R0 digit 1 (R) R7 R1 digit 2 (L) O1 O2 O3 O4 O5 -------------------------- R7 R2 L1 L4 L2 L5 L3 R7 R3 02 03 04 05 06 R7 R4 38 36 34 32 30 R7 R5 19 20 21 22 23 R6 R0 24 25 26 27 28 R6 R1 29 31 33 35 37 R6 R2 43 42 41 40 39 R6 R3 -- 07 10 13 16 R6 R4 -- 08 11 14 17 R6 R5 01 09 12 15 18 LED layout 01 0203 0506 04 07 08 09 10 11 12 13 14 15 L1 L2 L3 16 17 18 19 20 28 29 21L422 26L527 30 23 24 25 31 32 33 34 35 36 37 38 39304142 43