https://replica.wiki.extremist.software/api.php?action=feedcontributions&feedformat=atom&user=71.181.167.196Noisebridge - User contributions [en]2026-04-05T14:22:04ZUser contributionsMediaWiki 1.39.13https://replica.wiki.extremist.software/index.php?title=DeepHack&diff=27156DeepHack2012-08-22T01:06:52Z<p>71.181.167.196: /* Horology */</p>
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<div>DeepHack: Digital spelunking for the 21st Century<br />
<br />
= Secret Motor =<br />
[http://www.youtube.com/watch?v=D5PS-zOciF8 The original Secret Motor] was a project by Mike Kan circa 1993 to visualize memory access on a Macintosh using an oscilloscope. The [https://github.com/leif/qemu-secret-motor 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 [https://www.youtube.com/watch?v=s1eNjUgaB-g YouScope] [http://www.youtube.com/watch?v=-1E0DpQ_cFo emulator]) to visualize that data. TODO: post some video here of the qemu secret motor running.<br />
<br />
=QEMU=<br />
[http://wiki.qemu.org/Main_Page QEMU] is a generic and open source machine emulator and virtualizer.<br />
<br />
=Horology=<br />
==Linux 3.4 timer fixes==<br />
Patches for resume and 32-bit timer overflow<br />
<br />
https://lkml.org/lkml/2012/8/21/673<br />
<br />
==(Potential) fix for Linux leapsecond bug==<br />
1 July 2012<br />
<br />
https://lkml.org/lkml/2012/7/1/176<br />
<br />
==Avoiding unnecessary overflow in sched_clock==<br />
15 November 2011<br />
<br />
https://lkml.org/lkml/2011/11/15/359<br />
<br />
=The Elements of Computing Systems=<br />
* The [http://www1.idc.ac.il/tecs/plan.html book]<br />
* The [http://www1.idc.ac.il/tecs/about.html synopsis]<br />
* The [http://www1.idc.ac.il/tecs/software.html software]<br />
<br />
=MMIX=<br />
[http://www-cs-staff.stanford.edu/~uno/mmix-news.html 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.<br />
<br />
=Open Computation Hardware=<br />
The [http://opencores.org/or1k/OR1200_OpenRISC_Processor OR1200] is an open-source synthesizable CPU.<br />
<br />
=What Every Programmer Should Know about Computer Memory=<br />
A 7-part series by Ulrich Drepper ([http://ftp.linux.kiev.ua/pub/docs/developer/general/cpumemory.pdf complete PDF]):<br />
* [http://lwn.net/Articles/250967/ Introduction]<br />
* [http://lwn.net/Articles/252125/ CPU Caches]<br />
<br />
=CorePy=<br />
[http://www.corepy.org/ CorePy]: Assembly Programming from Python<br />
<br />
=Patterson & Hennesy=<br />
[http://www.cs.iastate.edu/~prabhu/Tutorial/title.html Java tutorial] based on "Computer Architecture" and "Computer Organization and Design"<br />
<br />
=Operating Systems=<br />
Systems-level software (kernel and userspace)<br />
==Unix V6==<br />
* [http://v6shell.org/history/sh.c Unix V6 Shell] by Ken Thompson (900 lines), 1975<br />
* [http://v6.cuzuco.com/ John Lion's Commentary] on the Unix v6 source<br />
** [http://www.lemis.com/grog/Documentation/Lions/ in PDF]<br />
==Linux==<br />
===A Plumber's Wish List for Linux===<br />
Looking for a useful systems software project? [http://lkml.org/lkml/2011/10/20/275 Version 2] of the list by Kay Sievers (20 Oct 2011).<br />
===Linux 0.01===<br />
* [http://www.kernel.org/pub/linux/kernel/Historic/ Original release] by Linus Torvalds (10,000 lines), September 1991<br />
* [http://kerneltrap.org/Linux/Dusting_Off_the_0.01_Kernel Port to GCC4 / QEMU] by Abdel Benamrouche, 1 January 2008<br />
==Minix 3==<br />
[http://wiki.minix3.org/en/MinixRoadmap Roadmap] including ARM support.<br />
<br />
=Temporal Hex Dump=<br />
* http://scanlime.org/2009/10/temporal-hex-dump/<br />
<br />
[[Category:Python]]<br />
[[Category:DeepHack]]</div>71.181.167.196