The approach allows devices with very limited communications hardware to operate over IP networks. The Bahia Network Driver is a usbnet-style driver available for Win32 hosts. On Linux hosts, the corresponding Ethernet-over-USB kernel module is called usbnet. Any applications that work over real Ethernet interfaces will work over a USB-Ethernet interface without modification, as there is no distinction between utilizing proper or improper Ethernet hardware. It creates a Linux network interface, which can be assigned an IP address and otherwise treated the same as a true Ethernet interface. The USB-eth module in Linux makes the computer running it a variation of an Ethernet device that uses USB as the physical medium. See the link below for protocol comparisons. The NCM protocol has elaborate provisions for this. These new devices are still much lower in power than desktop PCs, thus the issue of careful data handling arises, to maximize use of DMA resources on the device and minimize (or eliminate) copying of data (zero-copy). A gap every 23 frames is not noticeable, but a gap every three frames can be viewed as very costly to throughput.Īs USB has become faster, devices utilize more data and hence there is now demand for sending large amounts of data-either to be stored on the device, or be relayed over wireless links (see 3GPP Long Term Evolution). Such reduces bus occupancy, meaning that nothing is sent for considerable fractions of bus time. After this, there is bus latency, where nothing is sent until another transfer can be initiated. The USB system works by each packet being sent as a transfer, a series of maximum-length packets terminated by a short packet or a special ZLP (zero-length packet). One significant problem is, the Ethernet frames are about 1500 bytes in size-about 3 USB 2.0 packets, and 23 USB 1.1 packets. This was a satisfactory strategy for USB 1.1 systems (current when the protocol was issued) with 64 byte packets but not for USB 2.0 systems which use 512 byte packets. Of these protocols, ECM could be classified the simplest-frames are simply sent and received without modification one at a time. Remarkably, even some of the most modern platforms need minor accommodations and therefore support for these subsets is still needed. However, minor modifications of the standard subsets make practical implementations possible on such platforms. Regarding de facto standards, some standards, such as ECM, specify use of USB resources that early systems did not have. The RNDIS specification is available from Microsoft's web site. They are available for download from the USB-IF (see below). The latter three are part of the larger Communications Device Class (CDC) group of protocols of the USB Implementers Forum (USB-IF). The main industry protocols are (in chronological order): Remote NDIS (RNDIS, a Microsoft vendor protocol), Ethernet Control Model (ECM), Ethernet Emulation Model (EEM), and Network Control Model (NCM). Even though the USB is not a physical Ethernet, the networking stacks of all major operating systems are set up to transport IEEE 802.3 frames, without needing a particular underlying transport. The use of these protocols is to allow application-independent exchange of data with USB devices, instead of specialized protocols such as video or MTP (Media Transfer Protocol). There are numerous protocols for Ethernet-style networking over USB. Share USB data across multiple network devices with USB over Ethernet Hubs. Allowing easy access to your devices over your network. USB over Ethernet (also called USB over Network or USB over IP) is a system to share USB-Based devices over Ethernet, Wi-Fi, or even the Internet. It also refers to an Ethernet device which is connected over USB (instead of e.g. ( Learn how and when to remove this template message)Įthernet over USB refers to use of USB as an Ethernet network. JSTOR ( September 2016) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed.įind sources: "Ethernet over USB" – news Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.
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It was all somehow deeply important to me: all that music, all those lyrics. “How to ask a girl for a date, what love is like.” And oh the deep, wide, far-ranging questions we faced, from Jimmy Clanton’s “What am I gonna do on Saturday night?” to Jimi Hendrix’s “Have you ever been experienced?” Do you wanna dance? Am I blue? Will you still love me tomorrow? “And rock is also educational,” said Frank Zappa. We tend to listen to lyrics, ponder the words, heed and harken to their advice. It was modish, especially in the latitudinarian ’60s, to speak of the lyrics of rock as “poetry.” And to a degree, a certain few lyrics - quixotic, inventive, careening, or reflectively lyrical - came sufficiently close. “ The coolerator was crammed with TV dinners and ginger ale.” But he wasn’t lazy, never repeated pronouns, and always looked for the identifiable and, above all, concrete detail. Why would that matter? Many great songwriters hadn’t. The language of Berry’s verses may or ordinary, but he employs it naturally and without phony attitudinizing. In one case, it implies a sigh of disgust, and in another, a type of sullen indignation. In “Too Much Monkey Business,” for example, every verse rhymes, and when words cannot fill the existing spaces, the artist fills them with a flexible “aah,” which concludes each verse change each time it is verbalized. Berry’s work is expressed as functional, resulting in, because born of, simplicity. Charles Dickens was the first to use the word in The Posthumous Papers of the Pickwick Club.)Ĭhuck Berry’s lyrics, charming, and naïve, represent a certain primitivism (what Richard Goldstein in The Poetry of Rock calls “accidental art”), particularly in his innocent notion that poetry should rhyme and that all rhythmic spaces should be filled, even if filling them necessitates juggling words or even the creation of new ones. The romantics among us - or is it the romantic in each of us? - will add that certain phrases can be properly turned only in a moment of true inspiration, when we have lost our self-consciousness and calculating natures, and thereby can express our authentic selves.Ī whole vocabulary - in one sense, an entire language - has come from such music and the pioneering black radio stations (like WERD in Atlanta, WYLD in New Orleans, WLOU in Louisville, WDIA in Memphis, known throughout the South as the “Mother Station of the Negroes,” etc.) that in the late ’40s and ’50s pushed and played it, and consequently we’ve been left a lovely great catalogue of finger-poppin’ R&B words like hincty, zoo-zoos, whuppin’, juicehead, poontang, hamfat, gleeby, mogatin’, motorvatin’, lickin’ stick, jelly roll, scronch, poppa-stoppa, dicty, spo-dee-o-dee, good booty, shag on down, and meekin’. I want a full Murphy bed in my back seat.Ĭreative illiteracy, of course, goes back even before 1945, to the very beginnings of rock ‘n’ roll - long before pop music became whitened and mechanized…part of a deep and heartfelt, soulfully and stylistically undiluted fold tradition, vocal harmonies and gentle wails and shouted blues, born of a slavery that prevented even a smidgen of education for 400 years. I want air conditioning, I want automatic heat, I want a powerful motor with a jet-off take, I remember, for instance, deliberating what Chuck Berry meant us to understand in the song “School Days” when he sang:Ĭheat, but the teacher don’t know I mean she looks.Īn article in Goldmine (January 29, 1988) cites Chuck Berry’s “powerful facility for letter-perfect encapsulation,” which is generally true, although for reasons of rhyme he is often forced to throw in not only the odd semi-enclitical phrase, such as in the word-salad cited above or the line “ watch her look at her run, boys” in “School Days,” but, as in the song “No Money Down,” even to reverse them: Evangeline and “The Highwayman” were poetry. What I particularly enjoyed - even found myself listening for over the years - were certain phrases and squibs in various songs, usually hip, that compiling in my mind could be read as a documentary of slang (and somehow paraliteracy’s) progress, if not in modern America, then at least in my high school and among my friends. There was no end to it, but deliberate lunacies often made a song what it was. I tended to concentrate on the lyrics, which I more or less took as a form of reading. I love it, and have from the beginning, even its attractive imbecilities. Rock ‘n’ roll music, any old way you choose it, is one of the things I know I’ll most miss when I’m on my way out. But he wasn’t lazy, never repeated pronouns, and always looked for the identifiable and, above all, concrete detail.” Try the Fullscreen button in classrooms and meetings :-) Use this 50 Minutes Full Screen? Here are some great pre-set timers ready to use. A cool little 50 Minutes Timer! 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Needless worry the alarm sound, either too loud thus frightening …Island Greeter is an active and lightly used original owner Nordhavn 62 in exceptional condition. No harm “ beep” alarm sound can be set from 30-90 DP as person preference. Adjustable Alarm Sound: Single alarm setting with 9 minutes snooze. How to Create Java Project with Maven in Eclipse.How to Implement Thread-Safe Bounded Buffer in Jav.Let us know if you face any problems while using Java in Apple's Macbook Pro and we'll try to help. You can also see man java_home for further details. Don't forget to set JAVA_HOME using option -v if you have multiple Java versions installed in your Macbook. These steps work in OS X version Lion, Mountain Lion, Mavericks, Yosemite, and even in the beta version of the latest Mac version OS X El Capitan. In order to set PATH just add this JAVA_HOME/bin into PATH. From version 10.6 onward, it's recommended to set JAVA_HOME variable using /usr/libexec/java)home and not using something like /System/Library/Frameworks/ameworks/Version/1.6.0_22/Home, which is subject to change from release to release. That's all about h ow to set the JAVA_HOME environment variable in the Mac OS X system. In short, you can specify the JDK version using the -v option of java_home, of course, you need to download and install the corresponding JDK version. Similarly, if you want to set your JAVA_HOME to point to JDK 8 you can add the following lines to your bash_profile file:Įxport JAVA_HOME= "$(/usr/libexec/java_home -v 1.8)"Įxport JAVA_HOME= `/usr/libexec/java_home -v 1.8` If you have installed Oracle JDK 1.6 then you can follow these steps to point the JAVA_HOME environment variable to that JDK:Ģ) Open ~/.bash_profile file and add the below line:Įxport JAVA_HOME= "$(/usr/libexec/java_home -v 1.7)"Įxport JAVA_HOME= `/usr/libexec/java_home -v 1.7`ģ) Close the terminal and open a new one, so that your JAVA_HOME change takes effect. How to set JAVA_HOME to JDK 1.7 in MAC OS X 10.10 Yosemite Just remember to use option -v to set JAVA_HOME to a particular version of JDB, of course, it's only useful if you have multiple JDK installed on your MacBook Pro. You can follow the same steps to set the JAVA_HOME environment variable. In this article, you will learn how to set the JAVA_HOME environment variable in different Mac OS X versions e.g.Īctually, the steps are exactly the same (if you are running on a Mac version greater than 10.6), you don't need to do anything special depending upon your version e.g Mavericks or Yosemite. Since Java is an optional package on the latest version of OS X, starting from OSX 10.7 (Lion), you need to either install Oracle JDK or choose this optional package. In order to use Java from the command line, you also need to define JAVA_HOME or JRE_HOME, many Java-based programs and tools use these environment variables to access Java e.g. In order to run Java, two things are most important, PATH and CLASSPATH. Mac's UNIX-like feature is added advantage because most of the real-world Java servers run on UNIX-based systems e.g. If you have set JAVA_HOME in UNIX then it's exactly similar to that.Īpple's Mac OS X is the second most widely used operating system after Windows and no surprise that many Java programmers use Macbook Pro for Java development. This will append export "JAVA_HOME=\$(/usr/libexec/java_home -v 1.7)" into your bash_profile file. You can set JAVA_HOME in Mac OS X 10,10 or Yosemite by adding the following command in your ~/.bash_profile file, as shown below:Įxport JAVA_HOME= `/usr/libexec/java_home` (remember backticks)Įcho export "JAVA_HOME= \$(/usr/libexec/java_home -v 1.7)" > ~/.bash_profile |