r65emu

Arduino emulation library for 8-bit microcomputers based on 6502, i8080 and z80.

Sample Emulations

• Apple-1 and Apple-II
• CPM
• Space Invaders
• Pacman
• Commodore PET
• Compukit UK101 and Grant Searle's MicroUK101
• Commodore Chessmate
• Jeff Tranter's 6502 Single Board Computer

Configuration for Arduino

If building using the Arduino IDE, r65emu/src/hw/user.h must be configured correctly.

Supported commercially-available boards include:

• LilyGO TTGO
• Adafruit Feather
• Olimex ESP32 SBC

Supported architectures to build-your-own are:

• ESP8266
• ESP32
• Raspberry Pi Pico

Examples are also given for a generic node32s board and a homebrew esp8bit board.

Copy your configuration file to user.h. If the board is also mass-produced, please open a PR to add the new file to the library.

Some emulations require a filesystem image containing programs to be uploaded:

• On esp32, this arduino plugin is required for that
• On esp8266, this arduino plugin should be used
• Alternatively an SD card can be used.

Libraries

• PS2KeyAdvanced, PS2KeyRaw and PS2KeyMap

Display

Depending on target board, one of:

• TFT_eSPI
• ESP32Lib

Storage

These are optional if the target board supports it (e.g., esp8266 or esp32 boards):

• My port of Phil Stewart's SpiRAM library

Hardware

• An ESP8266 board, e.g., WeMOS, or ESP32-based board, e.g., Node32s,
• A 23k256 SPI RAM chip (optional),
• A supported TFT screen (if not using a board with VGA),
• A PS/2 keyboard (if not using a Serial interface).