Tutorial: https://www.youtube.com/watch?v=j_a4qiaQij4
SPECS:
Operating system: Commodore BASIC 2.0
CPU: MOS Technology 6510/8500

@ 1.023 MHz (NTSC version)
@ 0.985 MHz (PAL version)

Memory: 64 kB RAM + 20 kB ROM

Graphics: VIC-II (320 × 200, 16 colors, sprites, raster interrupt)

Sound: SID 6581 (3× osc, 4× wave, filter, ADSR, ring)

Connectivity: 2× CIA 6526 joystick, Power, ROM cartridge, RF, A/V, CBM-488 floppy-printer, digital tape, GPIO/RS-232