ASTRA-256 Assembler
Release date: Oct 21, 2025
Developers: brusnik.com
Publishers: brusnik.com
Genres: Education, Software Training
Categories: Steam Workshop, Steam Cloud
Supported languages: English, Russian, Ukrainian, French, German, Spanish - Spain, Spanish - Latin America

ASTRA-256 — A BINARY VIRTUAL MACHINE PROGRAMMED IN ASSEMBLER Step into the era of early computing and feel like a real engineer from the past. ASTRA-256 isn’t just a computer — it’s a complete educational environment where you write real Assembler code for a virtual von Neumann architecture machine. LEARN BY PLAYING ASTRA-256 is: An interactive simulator for learning Assembler from scratch. A logic puzzle for those who love “real” programming. A nostalgic time machine for veterans of the LPG-30, Altair 8800, and PDP-11. This is the kind of machine pioneers of computing once used to solve real problems — under tight resource constraints, just like in the 1970s. WHY LEARN ASSEMBLER? Assembler is the language the machine truly understands. It’s not obsolete — it’s foundational. Still used in microcontrollers and embedded systems : from home appliances and automotive electronics to medical devices and IoT. Gives you full control over the hardware — drivers, firmware, DSP, memory, and registers. Essential for cybersecurity : reverse engineering, malware analysis, hacking, and low-level defense. Helps you understand how high-level languages like Java, C++, and Python work under the hood. Reveals the essence of computation — how bits become intelligence, how stacks, memory, and ALUs operate. Understand Assembler, and you’ll understand how everything else works. WHAT CAN ASTRA-256 DO? 8-bit processor with accumulator and visible registers: IP, IN, OUT, SP, FLAGS. 256 bytes of memory — just like the original Altair 8800 released in 1975 with the Intel 8080. 75 instructions grouped by purpose: control flow, data movement, arithmetic, stack, I/O, and more. Lessons and documentation in five languages — printable, just like in the good old days. Start with simple programs and progress to complex algorithms: square roots, trigonometry, even mini-games. ASTRA-256 runs on a custom Assembler designed specifically for this environment. We intentionally offer an extended instruction set — similar to what you’ll find in modern microcontrollers and processors. It’s a hands-on way to gain foundational experience with low-level hardware logic — the kind that prepares you to work with any modern microcontroller. The principles haven’t changed. PLAY, LEARN, PROGRAM Everything you need is built in: editor, debugger, help system. Everything is real: memory, registers, instructions. Everything is here to help you understand how computers truly work — not at the interface level, but at the bit level. Who knows — maybe you’ll be the one to write the program that sends Elon Musk to Mars.