"Object-Oriented Programming System Intended for Local Or Networked systems"

Oopsilon is an object-oriented programming environment which can run either directly on 64-bit PCs, or hosted as an app atop GNU/Linux or BSD systems.

Its programming language is Valutron - a Smalltalk dialect. Valutron belongs genetically to the LittleSmalltalk family by its descent from LittleSmalltalk V3, and the image is based on it, but the virtual machine is mostly novel, taking the form of a register machine modified with an accumulator to act as the implicit operand and destination of instructions. The Ravenbrook Memory Pool System is used to manage the object memory and provide tracing garbage collection.

• vmm/ - Virtual Machine Manager - the kernel written in C++. Includes the Valutron interpreter.
  • vmm/$arch - architecture-specific code (arch can = amd64 or hosted)
  • vmm/mps - the Ravenbrook memory pool system