Commodore 64 (Vic 20, Pet, etc) emulator from Raspberry Pi Raspbian

I can confirm this install method (source) worked with a Raspberry Pi 4 using Raspbian Buster.
Compiles Vice and installs into /usr/local/bin. Initial launch reports a sound issue. If you go into settings (F12), there’s a sound configuration you can change to “Alsa”.

# get dependencies – this may take a long time and ~ 1.5 GB
sudo apt install autoconf automake build-essential byacc dos2unix flex libavcodec-dev libavformat-dev libgtk2.0-cil-dev libgtkglext1-dev libmp3lame-dev libmpg123-dev libpcap-dev libpulse-dev libreadline-dev libswscale-dev libvte-dev libxaw7-dev subversion texi2html texinfo yasm libgtk3.0-cil-dev xa65 libsdl2-dev
mkdir -p src
cd src
svn checkout https://svn.code.sf.net/p/vice-emu/code/trunk trunk
cd trunk/vice
./autogen.sh
./configure
make -j4
sudo make install

8bitdo Sega Genesis Receiver Review

8bitdo Sega Genesis Receiver Review

The 8bitdo Genesis Receiver allows your Sega Genesis or Mega Drive to use a modern gamepad such as the PS4, PS3, XBox or Wii U (pictured) as well as a wide assortment of Bluetooth controllers. Also pictured on the right is another device used in a similar way for devices that accept USB such as the Nintendo Switch, the Mini Playstation, PCs, etc.

Podcast:

Youtube video:

Manually Install RetroPie over Raspbian Stretch

If you are enjoying a full or lite install of Raspbian on your Raspberry Pi, you can also manually install RetroPie rather than work off of a RetroPie SD image.

It’s advisable to first tell your Pi to boot into console mode at boot. 

pi@raspberry:~$ sudo raspi-config
Choose (3) Boot Options
B1 Desktop/CLI
B2 Console Autologin (optionally, you could select B1 to log in)
<Finish>

Install RetroPie manually

Start by updating your system:

pi@raspberry:~$sudo apt-get update && sudo apt-get upgrade

Verify your local settings for a smooth installation.

pi@raspberry:~$sudo update-locale LC_ALL="en_US.UTF-8"

Now we install the packages needed by the installation script:

pi@raspberry:~$ sudo apt-get install git lsb-release 

Download the RetroPie setup script using git. If you don’t have git installed:

pi@raspberry:~$sudo apt install git-all

then:

pi@raspberry:~$ cd
pi@raspberry:~$ git clone --depth=1 https://github.com/RetroPie/RetroPie-Setup.git 

Now run the script:

pi@raspberry:~$ cd RetroPie-Setup
pi@raspberry:~$ chmod +x retropie_setup.sh
pi@raspberry:~$ sudo ./retropie_setup.sh

The installation dialog appears:

Choose the basic install and then optional packages, settings and drivers. Once you are done, reboot and launch with:

pi@raspberry:~$ emulationstation