ArduBIOS: Opcode Interpreter and ISA for Arduino

ArduBIOS is a hobby project that turns an Arduino into an 8-bit microcomputer with a BIOS, opcode interpreter, memory map, stack (128 bytes), user RAM (512 bytes), registers, flags, and basic opcodes including jumps and arithmetic. Future plans include full BIOS I/O, SD card as floppy disk, FAT12 file system, keyboard input, 16x2 display support, and a NodeJS assembler.