Back in 1979, Atari revolutionized home computing with the release of the Atari 400 and 800. These groundbreaking machines boasted custom graphics and sound chips, four joystick ports, and the ability to run the moast advanced video games of the era. Priced at $549 and $999 respectively, they offered a user-friendly approach to personal computing, featuring a modular design and a serial I/O bus that foreshadowed the ubiquitous USB standard. Now, over four decades later, a dedicated hobbyist has managed to condense the essence of these systems into a package that would have seemed like pure science fiction at the time.

Piotr “Osa” Ostapowicz, a Polish engineer, has recently introduced “Atarino,” a project hailed by the retro computing website Atariteca as potentially the smallest 8-bit Atari computer recreation ever created. This complete system, encompassing the processor, graphics chips, sound hardware, and memory controllers, is contained within a module measuring a mere 2×1.5 centimeters (approximately 0.79×0.59 inches) – about the size of a postage stamp.

Ostapowicz’s innovative design reimagines the classic Atari XL/XE architecture using modern FPGA (field-programmable gate array) technology. Unlike software emulators, which simulate older hardware on contemporary computer systems, or modern recreations that run these emulators (such as the Atari 400 Mini console), Atarino faithfully reproduces the original Atari components at the logic level. This allows it to execute vintage software while maintaining compatibility with original peripherals.

In a January 2024 YouTube interview with Atari Online PL, Ostapowicz explained his approach: “The current project is not strictly a clone of Atari but basically, well, I’m forming a machine that is compatible with the Atari 8-bit computer itself, but it was created on the basis of the framework that I created some time ago.”

The Atarino project, which has been in development for over a decade and was first showcased in December 2023, integrates a 6502C processor, ANTIC and GTIA graphics chips, a POKEY sound chip, and memory controllers onto a single Lattice UP5K FPGA chip.Despite its diminutive size,the system is capable of running at clock speeds of up to 31 MHz,significantly faster than the original hardware’s 1.79 MHz.

Smaller, Faster, and Primed for Future Development

“The current project is not strictly a clone of Atari… it was created on the basis of the framework that I created some time ago.”

While maintaining broad compatibility with classic Atari software, Ostapowicz notes that Atarino incorporates several enhancements to the original design. As an example, the 6502 processor core adheres to the physical chip specifications but includes new instructions. Furthermore, the memory system employs independent channels, rather than the original “cycle stealing” method (where the graphics chip temporarily interrupts the CPU to access memory), resulting in improved performance.