Genesis Megadrive - eddywebs/RetroPie-Setup GitHub Wiki

This console, known as the Genesis in North America and the Mega Drive everywhere else in the world, was released by Sega in 1988

DGEN has the worst performance and can be tedious to configure controls, lr-picodrive seems to be the favourite for older Pi's, lr-genesis-plus-gx seems to be the favourite for the Pi 2.

Accepted File Extensions: .smd .bin .md .iso

Place your ROMS in either

/home/pi/RetroPie/roms/megadrive

or

/home/pi/RetroPie/roms/genesis (symlinked to megadrive folder to remove confusion)

There are two methods for configuring controls- one for DGen and the other for lr-picodrive and lr-Genesis-Plus-GX.

lr-picodrive and lr-genesis-plus-gx utilise RetroArch configurations

Add custom retroarch controls to the retroarch.cfg file in

/opt/retropie/configs/megadrive/retroarch.cfg

For more information on custom RetroArch controls see: RetroArch Configuration

First you need to tell retroarch to use 6 buttons controllers, because the default is to use 3 buttons ones. Launch a megadrive game and go in the retroarch menu (default mapping: select + x). Go in Options -> Core Options and set the two input devices to 6 button pad. Then go back to be root of the menu and choose to save the configuration.

Now you can edit the file /opt/retropie/configs/megadrive/retroarch.cfg (you will need the help of jstest /dev/input/js0 to know which buttons to use). Example file:

# All settings made here will override the global settings for the current emulator core

video_shader = /opt/retropie/emulators/retroarch/shader/phosphor.glslp
video_shader_enable = false
video_smooth = false

input_player1_b_btn = "1"
input_player1_y_btn = "0"
input_player1_a_btn = "7"
input_player1_x_btn = "3"
input_player1_l_btn = "2"
input_player1_r_btn = "5"

input_player2_b_btn = "1"
input_player2_y_btn = "0"
input_player2_a_btn = "7"
input_player2_x_btn = "3"
input_player2_l_btn = "2"
input_player2_r_btn = "5"

DGen uses a configuration file called dgenrc located in

/opt/retropie/configs/megadrive/dgenrc

To set up an exit button: modify this line to match your controller button

# Quit DGen or switch to the next ROM on the command-line.
key_quit = escape
joy_quit = joystick0-button12

If you are from the United States it is likely that you had the Sega Genesis rather than the Sega Megadrive. If you want EmulationStation to show the genesis menu and boxart instead of megadrive then you can change the file in /etc/emulationstation/es_systems.cfg

from

  <system>
    <name>megadrive</name>
    <fullname>Sega Mega Drive / Genesis</fullname>
    <path>~/RetroPie/roms/megadrive</path>
    <extension>.smd .bin .gen .md .sg .zip .SMD .BIN .GEN .MD .SG .ZIP</extension>
    <command>/opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ megadrive %ROM%</command>
    <platform>megadrive</platform>
    <theme>megadrive</theme>
  </system>

to

    <name>genesis</name>
    <fullname>Sega Genesis</fullname>
    <path>~/RetroPie/roms/megadrive</path>
    <extension>.smd .bin .gen .md .sg .zip .SMD .BIN .GEN .MD .SG .ZIP</extension>
    <command>/opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ megadrive %ROM%</command>
    <platform>genesis</platform>
    <theme>genesis</theme>
  </system>