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hacking - q about the thread
Post 56176 by norsk hedensk on Tuesday 28th of September 2004 10:33:34 PM
09-28-2004
Quote:
Originally posted by Neo
The good thing about information is that there is so much of it!!!!! And most of it is used for a particular purpose.
ACCORDING to my sources and research, the term "hack" and "hacking" relates back to the American Civil War when, when one side of the other installed telegraph wires along railroad tracks, the opposing sides would "hack" the telegraph wires to destroy communications.
In fact, the American Civil War (as I recall) was the first war to use such new fangled devices (telegraph and railroads) to support military logical operatiions.
So, there might be a lot of people who would like to define "hack" and "hacking' to be congruent with a particular cause or purpose. However, my research on the subject goes back to the Civil War in the US and the cutting of communications lines with tools like bayonets and axes
Neo
The good thing about information is that there is so much of it!!!!! And most of it is used for a particular purpose.
ACCORDING to my sources and research, the term "hack" and "hacking" relates back to the American Civil War when, when one side of the other installed telegraph wires along railroad tracks, the opposing sides would "hack" the telegraph wires to destroy communications.
In fact, the American Civil War (as I recall) was the first war to use such new fangled devices (telegraph and railroads) to support military logical operatiions.
So, there might be a lot of people who would like to define "hack" and "hacking' to be congruent with a particular cause or purpose. However, my research on the subject goes back to the Civil War in the US and the cutting of communications lines with tools like bayonets and axes
Neo
but popular usage dictates meaning!....sometimes.
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LEARN ABOUT LINUX
iicbus
IICBUS(4) BSD Kernel Interfaces Manual IICBUS(4) NAME
iicbus -- I2C bus system SYNOPSIS
device iicbus device iicbb device iic device ic device iicsmb DESCRIPTION
The iicbus system provides a uniform, modular and architecture-independent system for the implementation of drivers to control various I2C devices and to utilize different I2C controllers. I2C I2C is an acronym for Inter Integrated Circuit bus. The I2C bus was developed in the early 1980's by Philips semiconductors. Its purpose was to provide an easy way to connect a CPU to peripheral chips in a TV-set. The BUS physically consists of 2 active wires and a ground connection. The active wires, SDA and SCL, are both bidirectional. Where SDA is the Serial DAta line and SCL is the Serial CLock line. Every component hooked up to the bus has its own unique address whether it is a CPU, LCD driver, memory, or complex function chip. Each of these chips can act as a receiver and/or transmitter depending on its functionality. Obviously an LCD driver is only a receiver, while a memory or I/O chip can both be transmitter and receiver. Furthermore there may be one or more BUS MASTERs. The BUS MASTER is the chip issuing the commands on the BUS. In the I2C protocol specification it is stated that the IC that initiates a data transfer on the bus is considered the BUS MASTER. At that time all the others are regarded to as the BUS SLAVEs. As mentioned before, the IC bus is a Multi-MASTER BUS. This means that more than one IC capable of initiating data transfer can be connected to it. DEVICES
Some I2C device drivers are available: Devices Description iic general i/o operation ic network IP interface iicsmb I2C to SMB software bridge INTERFACES
The I2C protocol may be implemented by hardware or software. Software interfaces rely on very simple hardware, usually two lines twiddled by 2 registers. Hardware interfaces are more intelligent and receive 8-bit characters they write to the bus according to the I2C protocol. I2C interfaces may act on the bus as slave devices, allowing spontaneous bidirectional communications, thanks to the multi-master capabili- ties of the I2C protocol. Some I2C interfaces are available: Interface Description pcf Philips PCF8584 master/slave interface iicbb generic bit-banging master-only driver lpbb parallel port specific bit-banging interface bktr Brooktree848 video chipset, hardware and software master-only interface SEE ALSO
iicbb(4), lpbb(4), pcf(4) HISTORY
The iicbus manual page first appeared in FreeBSD 3.0. AUTHORS
This manual page was written by Nicolas Souchu. BSD
August 6, 1998 BSD