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An 8 bit emulator created on the scratch, including an assembler.

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Ever had the experience of a 8 bit system, having max. 64k memory, using assembler to write effective small programs?
This system is an experimental 8 bit, 16 color computer, with a processer similar to Z80, that (on my laptop using linux with NO opengl support) achieves up to 1.2 Million instructions per second and 50 Hz. screen refresh rate.
It has a builtin assembler to load assembler programs.
There is a rudimentary rom that implements some basic functions like line input, or a system clock.
Also there is a snake game, (depending on that rom), as a reference and for fun!
Take a look, give me your reply!
When having ideas for better performance, let me know!

achtbit Web Site


  • eight bit cpu emulator
  • customizable 16 color palette
  • one text and three graphic modes
  • sound port (one line)
  • machine language similar to Z80
  • builtin assembler
  • builtin load of assembler programs and memory dumps
  • builtin debug tools
  • reference game "snake" written in assembler


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Additional Project Details



Intended Audience

Developers, End Users/Desktop

User Interface

Java Swing

Programming Language



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