M.CU.M.E = Multi CompUter Machine Emulator

A collection of 80th game Console and Computer emulators ported to Teensy and ESP32 MCUs.
Have a look at the video: https://youtu.be/jlqoWH2X6gk

This project is a spin-off of the TeensyCEC project https://github.com/Jean-MarcHarvengt/TeensyCEC

Featuring

5 game consoles: Atari2600 (espvcs), Philips Videopac/Odyssey (espo2em), Colecovision (espcolem), NES (espnofrendo) and Atari5200 (esp5200).
4 computer cores: Zx80/Zx81 (esp81), Zx Spectrum (espspeccy), Atari800 (esp800)and C64 (esp64)

Minimal requirements:

• Teensy 3.6/Teensy4.0 or ESP32 Node32S/Wrover SDK chip
• ILI9341 or ST7789 SPI display
• SD card (Teensy uses built-in uSD, ESP32 uses external one connected over SPI, e.g. ILI9341 integrated one)
• Analog joypad (Arduino or PSP like)
• 3 buttons (FIRE, USER1 and USER2)

Optional requirements:

• I2C custom keyboard (for computers emulators)
• Sound (DAC for ESP and Teensy3.6, MQS for Teensy4.0)
• VGA output (Teensy 3.6 only)

Wiring

• see pinout.txt file in the respective project (ESP32 or Teensy)
• Some KICAD image also available for ESP32

I2C keyboard (best to have for computer emus)

• see i2ckeyboard sub-directory
• the I2C keyboard is using a separate atmega328p MCU handling the keys matrix
• with 10x4 or 10x5 keys

Installation

• Format the SD card as FAT32
• extract the content of SD.zip in the root directory
• there must be a sub-directorie for each emulator
  • "2600" => for atarivcs, put your Atari 2600 roms here (.bin)
  • "5200" => for atari5200, put your Atari 5200 roms here (.bin)
  • "800" => for atari800, put your Atari 800 cartridges here (.rom)
  • 'c64" => for c64, put your C64 programs here (.prg)
  • "o2em" => for odyssey/videopac, put your Videopac/Odysssey roms here (.bin)
  • "coleco" => for colem, put your Colecovision roms here (.rom, including coleco.rom)
  • "nes" => for nes/nofrendo, put your .nes files here (e.g. galaga,xevious,mario1...)
  • "spec" => for spectrum, put your ".z80" or ".sna" files here into sub-dirs or not ( max 48K )
  • "z81" => for zx81, put your ".p", ".81"(, ".56") ".80" or ".o" files here, into sub-dirs or not ( max 56K )
  • "st" => for AtariST, put your ".st" files here, into sub-dirs or not
  • "pc" => for zx81, put your HDD image ".img"
  • "vectrex" => for Vectrex, put your ".gam" files here, into sub-dirs or not
• insert the card into the SD slot

Compilation/flashing (Teensy)

• open the respective ino file with Arduino SDK
• compile and install from there.

Compilation/flashing (ESP32)

• go to espboot directory first:
• make, make flash => this will install custom partition table, bootloader and app selector
• go to any other directory (one by one!):
• Adapt ./flashapp.sh according your OS (I use OSX)
• make, ./flashapp.sh

Status and known issues

• 64:
  • Full speed with sound
  • I2C custom keyboard support!
  • (only few games working)
• colem:
  • Full speed with sound
• vcs:
  • no sound yet
  • limited cartridge size support (due to ram constraint)
• o2em:
  • no sound
  • only videopac G7000 games supported (due to ram constraint)
• nofrendo:
  • Full speed with sound
  • 32k roms only supported except on Teensy 4.0
• 5200:
  • Full speed with sound
  • 16 and 32k roms
• speccy:
  • SNA support (Z80 to be fixed)
  • YM and preliminary buzz sound support
  • 48k games only supported
  • kempston joystick supported but on screen keyboard may not answer in some games
  • I2C custom keyboard support!
• 81:
  • zx80 and zx81
  • .P, .81 and .80 format support (rename .56 for Zx81 hires game that requires 48k or more)
  • I2C custom keyboard support!
  • HIRES support for zx81
  • zx80 support
  • YM sound support for zx81
• 800:
  • .rom support (no floppy yet)
  • I2C custom keyboard support!
  • Full speed with sound
• AtariST:
  • floppy support
  • I2C custom keyboard support!
  • with sound
  • full speed on Teensy4.0 only!!
• PC:
  • HDD image support
  • I2C custom keyboard support!
  • no sound
  • full speed on Teensy4.0 only!!
• Vectrex:
  • .gam roms support
  • no sound
  • full speed on Teensy4.0 only!!

Running

• ESP32 only: Select the emulator from the app selector screen and press FIRE (wait a bit that the SD get mounted)
• For the launched emulator you should see the roms of the SD card being listed
• you can select the rom with up/down
• you can start the game by pressing the FIRE key
• while the game is running, you might have to press USER1 or USER2 keys to start the game
• some emulators requires the I2Ckeyboard
• You can then play the game with the analog joystick and the FIRE/USER1 keys
• press the USER1+USER2 to reboot the emulator and load another ROM
• USER2 can be used to swap joystick 1/2 in some emulators

Credits

I mostly ported the emulators from existing projects, all the credit goes to the authors of colem, o2em , x2600, moarnes, mc-4u, sz81, atari800, Vice, Nofrendo, jun52, dcastaway, vectrexemu and 8086 Arduino projects! Thanks a lot also to Frank Boesing for his ILI DMA library from which I started from and his great Teensy64 project https://github.com/FrankBoesing/Teensy64