hardware:
Raspberry Pi Console

Wifi-1. Open the Config menu again with:

sudo raspi-config

Wifi-2. Select System Options, then Wireless LAN.

It will first ask for your SSID (the name of your WIFI connection), and then the password to that WIFI.

Floppy-1. Connect your Floppy Disk Drive to your Raspberry Pi via USB. In the Raspberry Pi Terminal, enter:

sudo lsusb

This should show that the Floppy Drive is connected. Insert a floppy disk into the drive and test if it reads data from the floppy by entering:

sudo fdisk -l

This should show something like fdisDisk /dev/sda which means it is able to read the floppy in the floppy drive.

Floppy-2. Create a Floppy Directory by entering:

sudo mkdir /media/floppy

You can name this new directory anything you want such as /picoconsole or /floppydrive. Just remember what you name it for the following steps and replace any /media/floppy with the directory name you chose.

Floppy-3. Mount the Floppy Directory by entering:

sudo mount /dev/sda /media/floppy

Floppy-4. After preparing a playable PICO-8 game on a Floppy Disk (see Floppy Disk tutorial), test-run the game from the floppy drive by entering:

/boot/pico-8/pico8 -root_path /media/floppy -run /media/floppy/run.p8.png

Change run.p8.png to the title you saved the PICO-8 cart in your floppy disk. We name all of our floppy disk game files as the same filename ("run"), to make it easier for the Raspberry Pi to automatically find and run across different floppy disks. The different floppy disks simply save a different game under the same filename. So you can name them what you'd like as long as you keep it consistent.

Floppy-5. Prepare a file that will automatically run on startup of your Raspberry Pi, and either run the game in the floppy or open PICO-8 in Splore. We are going to use the built-in text editor called "nano". In the terminal enter:

nano

This will open a blank, unnamed file. In this file, type in each line of this code:

#!/bin/bash
sudo mount /dev/sda /media/floppy
if [ -f "/media/floppy/run.p8.png" ]
then
exec /boot/pico-8/pico8 -root_path /media/floppy -run /media/floppy/run.p8.png
else
exec /boot/pico-8/pico8 -splore
fi
exit 0

Don't forget to make the appropriate changes if you named your directory or files differently in earlier steps. Possible changes in the above code are /dev/sda and /media/floppy and run.p8.png; but if you have been following along with this tutorial exactly, then you don't need to change anything.

When you finish, press Ctrl+O to save the file and name it run.sh which we will use as the startup program.

Then press Ctrl+X to exit the text editor and return to the terminal. 

Floppy-6. Make this run.sh file an executable file by entering:

chmod +x run.sh

Floppy-7. Copy the run.sh executable file into the local binaries folder by entering:

sudo cp run.sh /usr/local/bin

Floppy-8. Edit the bootup script named rc.local by entering:

sudo nano /etc/rc.local

Erase all the text in this file and replace it with:

#!/bin/ sh -e
exec run.sh
exit 0

Save with Ctrl+O and exit with Ctrl+X. Enter Y for "yes" if it asks you to confirm overwriting the file. This will have your Raspberry Pi bootup using the run.sh file we created earlier, which will check if a floppy disk is in the floppy drive to automatically load and run that game.

Autostart-1. Open the RetroPie bootup script named autostart.sh by entering:

sudo nano /opt/retropie/configs/all/autostart.sh

Next, you will edit this file to specify exactly how you want your Raspberry Pi to startup and how it should automatically load PICO-8. You have 3 options, A, B, or C:

Autostart-A. If you want to automatically startup PICO-8 normally, then erase all the text in this file and replace it with:

/boot/pico-8/pico8 #auto

Autostart-B. If you want to automatically startup PICO-8 in Splore, then erase all the text in this file and replace it with:

/boot/pico-8/pico8 -splore #auto

Autostarting in Splore is a good idea if:

1. You only want controllers connected to your PICO-console, no keyboard.
2. You have Wifi connected and want to use your PICO-console mainly for playing games via the online library, Splore.
3. You want to play from a local selection of games and use Splore to easily select which game to play with a controller.

Autostart-C If you are using the Floppy Disk setup to play games and have already gone through the Floppy Disk Setup section, then erase all the text in this file and replace it with:

run.sh #auto

Autostart-2. After editing this file with your preferred way to startup your Raspberry Pi, save with Ctrl+O and exit with Ctrl+X. Enter Y for "yes" if it asks you to confirm overwriting the file.

6-1. Test out the speed of your autostart and witness the various boot sequences that your Raspberry Pi and RetroPie goes through before eventually starting PICO-8.

6-2. Disable Rainbow Splashscreen

sudo nano /boot/config.txt

Navigate to the bottom of the file and add this line:

disable_splash=1

Press Ctrl+O to save, then Ctrl+X to exit, and press Y to confirm overwriting the file.

6-3. Disable Intro Text

sudo nano /boot/cmdline.txt

Navigate through the file, changing each of these lines:

console=tty becomes console=tty3

loglevel=x becomes loglevel=3

Then at the end of the file, add logo.nologo quiet fastboot. When you are done, the file should look similar to this:

console=serial0,115200 
console=tty3 
root=x 
rootfsttype=x 
fsck.repair=x 
rootwait 
loglevel=3 
consoleblank=x 
plymouth.enable=x 
logo.nologo quiet fastboot

Press Ctrl+O to save, then Ctrl+X to exit, and press Y to confirm overwriting the file.

6-4. Disable Unnecessary Services

Type each of these commands into the terminal and press ENTER. This will help shave off more seconds of the bootup time and get you into PICO-8 quicker.

Tip: You can use the up arrow to automatically rewrite the last command which you can then edit before pressing ENTER. This is so that you don't have to manually type the repeating parts of the commands below:

sudo systemctl disable dhcpcd.service

sudo systemctl disable networking.service

sudo systemctl disable raspi-config.service

sudo systemctl disable dphys-swapfile.service

sudo systemctl disable apt-daily.service

sudo systemctl disable hciuart.service

sudo systemctl disable avahi-daemon.service

sudo systemctl disable triggerhappy.service

sudo systemctl disable smbd.service

sudo systemctl disable nmbd.service

sudo apt purge --remove plymouth

sudo apt remove --purge x11-common

sudo apt autoremove