Commodore 64 Emulator for Arduino
Open the C64.ino with Arduino IDE or any other IDE of you choice.
Configuration
Uncomment #define NTSC in C64.ino if NTSC video is required. Note that there will be less performance left for BASIC programs when doing so. So prefer PAL, whenever possible.
Hires mode (Arduino Mega only)
When running on an Arduino Mega, the 320x200 high resolution mode is available. This displays a black and white bitmap referred by the value of bnr in bitmaps.h. The High resolution mode can be switched on with ````POKE 53265,32```. You can create own header files with bitmap data with the hires converter.
Schematic
Breadboard
With an optional 100 pF capacitor parallel to the 820 Ohm resistor, the image might appear sharper on some analog devices.