Roger Barraud rbarraud

Mike's x86-64 Assembly (ASM) Notes

Assembling Binary Machine Code

Operating `Modes`:

These determine the assumed/default size of instruction operands, and restricts which opcodes are available, and how they are used.

Modern operating systems, booted inside Real mode,

HOWTO: Using FileMerge (opendiff) with Git on OSX

FileMerge (opendiff) can really come in handy when you need to visually compare merging conflicts. Other times it's just a nice visual way to review your days work.

The following method works by creating a simple bash script (git-diff-cmd.sh) that sets us up with the proper command line arguments for Git to pass off files to FileMerge.

overview

FreeBSD OS upgrades are done in 3 phases:

install new kernel
install new userland
upgrade all packages

Around these 3 stages, we use zfs snapshot and a git snapshot of /etc to make rollback and diffing any releases easier. freebsd-version -ku has been used

Case for Bus Pirate v3.6 (Dangerous Prototypes/Seeedstudio version)

This is a case for the Bus Pirate v3.6 from Dangerous Prototypes as listed on Thingiverse to be printed on a 3D printer.

In order to compile this file to an STL you'll need OpenSCAD and also the file oshw.scad which you can find here on Thingiverse.

	(load-option '*parser)

	(define (json-vector-list v)
	(vector (vector->list v)))

	(define json-object-pair
	(*parser
	(transform
	(lambda (v)
	(vector (cons (string->symbol (vector-ref v 0)) (vector-ref v 1))))

	Open FileMerge from command line

	opendiff

	If the command-line doesn't work, and you have no /Developer directory anymore, you probably need to:
	sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer

	#!/usr/bin/env python
	# Ported to Python from http://www.vim.org/scripts/script.php?script_id=1349

	print "Color indexes should be drawn in bold text of the same color."
	print

	colored = [0] + [0x5f + 40 * n for n in range(0, 5)]
	colored_palette = [
	"%02x/%02x/%02x" % (r, g, b)
	for r in colored

	[Unit]
	Description=supervisord - Supervisor process control system for UNIX
	Documentation=http://supervisord.org
	After=network.target

	[Service]
	Type=forking
	ExecStart=/usr/bin/supervisord -c /etc/supervisord.conf
	ExecReload=/usr/bin/supervisorctl reload
	ExecStop=/usr/bin/supervisorctl shutdown

	use32
	UMB_START = 0x00100000
	org UMB_START

	MB_MAGIC = 1BADB002h
	MB_F_BOOTALIGNED = 1
	MB_F_MEMINFO = (1 shl 1)
	MB_F_VIDEOTABLE = (1 shl 2)
	MB_F_USE_MBOFFSETS = (1 shl 16)
	MB_FLAGS = MB_F_BOOTALIGNED or MB_F_MEMINFO or \

	# Our simple example of a Turnstile state machine.

	class Turnstile
	def initialize
	@state = "Locked"
	end

	def push!
	@state = "Locked" if unlocked?
	end