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DeepHack: Digital spelunking for the 21st Century

Secret Motor[edit]

The original Secret Motor was a project by Mike Kan circa 1993 to visualize memory access on a Macintosh using an oscilloscope. The QEMU Secret Motor is an attempt to create something similar using an emulator. It currently consists of a patched version of qemu which prints the x86 EIP for each cycle of the emulated machine, and a python script (based on this YouScope emulator) to visualize that data. TODO: post some video here of the qemu secret motor running.


QEMU is a generic and open source machine emulator and virtualizer.


Linux 3.4 timer fixes[edit]

Patches for resume and 32-bit timer overflow

(Potential) fix for Linux leapsecond bug[edit]

1 July 2012

Avoiding unnecessary overflow in sched_clock[edit]

15 November 2011

The Elements of Computing Systems[edit]


MMIX is a 64-bit RISC machine used in Volume 4A of Donald Knuth's Art of Computer Programming and it will eventually be used in all other volumes of that series.

Open Computation Hardware[edit]

The OR1200 is an open-source synthesizable CPU.

What Every Programmer Should Know about Computer Memory[edit]

A 7-part series by Ulrich Drepper (complete PDF):


CorePy: Assembly Programming from Python

Patterson & Hennesy[edit]

Java tutorial based on "Computer Architecture" and "Computer Organization and Design"

Operating Systems[edit]

Systems-level software (kernel and userspace)

Unix V6[edit]


A Plumber's Wish List for Linux[edit]

Looking for a useful systems software project? Version 2 of the list by Kay Sievers (20 Oct 2011).

Linux 0.01[edit]

Minix 3[edit]

Roadmap including ARM support.

Temporal Hex Dump[edit]