Now the Gigatron is emulating a 6502 processor, the same CPU found in the Apple II and almost every other retrocomputer that isn’t running a Z80. There’s a thread over on the Gigatron forums ...

It’s an assembly tutorial for the 6502 processor. The nice thing is that you need nothing more than your browser to participate thanks to the embedded JavaScript emulator which acts as assembler ...

It was widely used in schools and home and manufactured up to 1994. Using an 8-bit 6502 microprocessor running at 1 MHz and an 8-bit bus, it ran the Apple DOS and ProDOS operating systems.

Since this processor is similar to the 6502 chip used in classic PCs and game consoles, like the Atari 2600 or the Apple II, the tiny computer can easily run emulators for those devices.