Genesis Mega Drive Cable Setup Guide - GrechTech/RetroRosetta GitHub Wiki

RetroRosetta Pinout

  1. RetroRosetta config
    1. Place a jumper cap across row 20 (A and B) of the RetroRosetta header
    2. Place a jumper cap across row 19 (A and B)
    3. Place a jumper cap across row 17 (A and B)
  2. [1 Player Only] RetroRosetta config
    1. Place a jumper cap across row 16 (A and B)
    2. Place a jumper cap across row 15 (A and B)
    3. Place a jumper cap across row 12 (A and B)
    4. Place a jumper cap across row 6 (A and B)
    5. Place a jumper cap across row 5 (A and B)
    6. Place a jumper cap across row 2 (A and B)

LevelShifter Pinout

  1. Level Shifter Power config
    1. Place a jumper cap across the B/5V pins of header J6
    2. [2 Player] Place a jumper cap across the C/5V pins of header J6
    3. Place a jumper cap across the D/3V3 pins of header J6
  2. Level Shifter IO config
    1. Place a jumper cap on A1E on header J1
    2. Place a jumper cap on A2E on header J1
    3. Place a jumper cap on A3E on header J1
    4. Place a jumper cap on A4E on header J1
    5. Place a jumper cap on B1E on header J2
    6. Place a jumper cap on B2E on header J2
    7. Place a jumper cap on B3E on header J2
    8. Place a jumper cap on B4E on header J2
    9. [2 Player] Place a jumper cap on C1E on header J3
    10. [2 Player] Place a jumper cap on C2E on header J3
    11. [2 Player] Place a jumper cap on C3E on header J3
    12. [2 Player] Place a jumper cap on C4E on header J3
    13. Place a jumper cap on D1E on header J4
    14. Place a jumper cap on D2E on header J4
    15. Place a jumper cap on D3E on header J4
    16. Place a jumper cap on D4E on header J4
    17. Place a jumper cap on D3A on header J4
    18. Place a jumper cap on D4A on header J4
    19. [1 Player Only] Place a jumper cap on A2A on header J1
    20. [1 Player Only] Place a jumper cap on A4A on header J1

Cable Pinout (Looking at cable end)

*(5V input pins are on the side of header J6 that is towards the centre of the PCB)

**(GND input pins are on the side of header J6 that is towards the edge of the PCB)

1. Red - U
2. Black – D
3. Grey – L
4. Orange – R
5. Brown - 5V
6. Green – TL
7. White – TH
8. Blue – GND
9. Yellow – TR

  1. Level Shifter Input wiring [Player 1]

    1. Connect U1 (Red / Pin 1 of Player 1) to B1Y on header J2
    2. Connect D1 (Black / Pin 2 of Player 1) to B2Y on header J2
    3. Connect L1 (Grey / Pin 3 of Player 1) to B3Y on header J2
    4. Connect R1 (Orange / Pin 4 of Player 1) to B4Y on header J2
    5. Connect 5V (Brown / Pin 5 of Player 1) to a 5V input pin *
    6. Connect TL1 (Green / Pin 6 of Player 1) to A1Y on header J1
    7. Connect TH1 (White / Pin 7 of Player 1) to D1A on header J4
    8. Connect GND (Blue / Pin 8 of Player 1) to a GND input pin**
    9. Connect TR1 (Yellow / Pin 9 of Player 1) to A3Y on header J1

  2. Level Shifter Input wiring [Player 2]

    1. Connect U2 (Red / Pin 1 of Player 2) to C1Y on header J3
    2. Connect D2 (Black / Pin 2 of Player 2) to C2Y on header J3
    3. Connect L2 (Grey / Pin 3 of Player 2) to C3Y on header J3
    4. Connect R2 (Orange / Pin 4 of Player 2) to C4Y on header J3
    5. Connect 5V (Brown / Pin 5 of Player 2) to a 5V input pin*
    6. Connect TL2 (Green / Pin 6 of Player 2) to A2Y on header J1
    7. Connect TH2 (White / Pin 7 of Player 1) to D2A on header J4
    8. Connect GND (Blue / Pin 8 of Player 2) to a GND input pin**
    9. Connect TR2 (Yellow / Pin 9 of Player 2) to A4Y on header J1

  3. Output wiring [Level Shifter to RetroRosetta Core]

    1. Connect GND of LevelShifter** to RetroRosetta pin 20C
    2. Connect 5V of LevelShifter* to RetroRosetta pin 19D
    3. Connect 3.3V to LevelShifter to RetroRosetta pin 14A
    4. Connect A1A to RetroRosetta pin 13B
    5. [2 Player] Connect A4A to RetroRosetta pin 10B
    6. [2 Player] Connect A2A to RetroRosetta pin 16B
    7. Connect A3A to RetroRosetta pin 14B
    8. Connect B1A to RetroRosetta pin 4B
    9. Connect B4A to RetroRosetta pin 1B
    10. Connect B2A to RetroRosetta pin 8B
    11. Connect B3A to RetroRosetta pin 7B
    12. Connect D1Y to RetroRosetta pin 18B
    13. [2 Player] Connect D2Y to RetroRosetta pin 12B
    14. [2 Player] Connect C1A to RetroRosetta pin 6B
    15. [2 Player] Connect C4A to RetroRosetta pin 15B
    16. [2 Player] Connect C2A to RetroRosetta pin 5B
    17. [2 Player] Connect C3A to RetroRosetta pin 2B