Pintos

Pintos is computer software, a simple instructional operating system framework for the x86 instruction set architecture. It supports kernel threads, loading and running user programs, and a file system, but it implements all of these in a very simple way. It was created at Stanford University by Ben Pfaff in 2004.[1] It originated as a replacement for Not Another Completely Heuristic Operating System (Nachos), a similar system originally developed at UC Berkeley by Thomas E. Anderson, and was designed along similar lines.[2] Like Nachos, Pintos is intended to introduce undergraduates to concepts in operating system design and implementation by requiring them to implement significant portions of a real operating system, including thread and memory management and file system access. Pintos also teaches students valuable debugging skills.

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Pintos
Original author(s)Ben Pfaff
Developer(s)Ben Pfaff
Initial release2004
Written inC
Platformx86
Available inEnglish
LicenseBSD-like
Websitewww.scs.stanford.edu/11wi-cs140/labs/project.html

Unlike Nachos, Pintos can run on actual x86 hardware, though it is often run atop an x86 emulator, such as Bochs or QEMU. Nachos, by contrast, runs as a user process on a host operating system, and targets the MIPS architecture (Nachos code must run atop a MIPS simulator).[2] Pintos and its accompanying assignments are also written in the programming language C instead of C++ (used for original Nachos) or Java (used for Nachos 5.0j).

Pintos is currently used by multiple institutions, including UC Berkeley[3], as an academic aid in Operating Systems class curriculums.

References
  1. Pintos, by Ben Pfaff, PDF
  2. "Pintos Projects: Introduction". Retrieved 2007-04-17.
  3. https://cs162.eecs.berkeley.edu/
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