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| -rw-r--r-- | Ethernet | 49 | ||||
| -rw-r--r-- | books/Gravity's Rainbow | 114 |
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diff --git a/Ethernet b/Ethernet new file mode 100644 index 0000000..6b4be44 --- /dev/null +++ b/Ethernet @@ -0,0 +1,49 @@ +======== +Ethernet +======== + +.. warning:: Under progress! + +History +======= +Bob Metcalfe first described the ethernet system in a memo while working at +the Xerox Palo Alto Research Center in 1973 ([oreilly]_). It was based on +the earlier *Aloha* system developed by Norman Abramson at the University of +Hawaii. *Aloha* was a radio network for inter-island communications. + +Structure +========= + +Data Frames +~~~~~~~~~~~ +The frame format is the same for ethernet systems of any speed. + +==================== =========== +Section Size (bits) +==================== =========== +Preamble 64 +Destination Address 48 +Source Address 48 +Type Length 16 +Data 46 to 1500 +Checksum 32 +==================== =========== + +.. topic:: Preamble + + The preamble originally served as a "warm up" period for hardware to + stabilize and prepare for the rest of the frame. + +.. topic:: Source and Destination addresses + + Manufacturers are given a 24 bit id (first half), and are expected to + ensure the uniqueness of the second half of each device's address. + + The IEEE-SA (Standards Association) delegates addresses. + +.. topic:: Checksum + + The checksum (or Frame Check Sequence) is a Cyclic Redundancy Checksum. + +.. [oreilly] `Ethernet: The Definitive Guide`:title:, by Charles Spurgeon. + O'Reilly, 2000 diff --git a/books/Gravity's Rainbow b/books/Gravity's Rainbow new file mode 100644 index 0000000..05a699e --- /dev/null +++ b/books/Gravity's Rainbow @@ -0,0 +1,114 @@ +================= +Gravity's Rainbow +================= + +:by: Thomas Pynchon + +Excellent German Words +---------------------- +These are some of my favorites from http://www.hyperarts.com/pynchon/gravity/extra/german.html + + +Weltschmerz + world-weariness +Leunahalluziationen + gasoline hallucination +Schweinheldfest + pig-hero festival +Purpurstoff + purple substance +Folgsamkeitfaktor + obedience factor +Versuchsanstalt + research institute, experimental station +Urstoff + primordial stuff +Kadavergehorsamkeit + corpse-like obedience, i.e., slavish obedience +Hinterhof + back-courtyard +Bohnenkaffee + pure coffee + +Rocket Limericks +---------------- +*(These are interspersed on pages 305-335)* + +| There once was a thing called a V-2 +| To pilot which you did not need to- +| You just pushed a button, +| And it would leave nuttin' +| But stiffs and big holes and debris, too. +| +| <refrain:> +| Ja, ja, ja, ja! +| In Prussia they never eat pussy! +| There ain't hardly cates enough, +| There's garbage and that's enough, +| So waltz me around again, Russky! +| +| There was a young fellow named Crockett, +| Who had an affair with a rocket. +| If you saw them out there +| You'd be tempted to stare, +| But if you ain't tried it, don't knock it! +| +| There was a young fellow named Hector, +| Who was fond of a launcher-erector. +| But the squishes and pops +| Of acute pressure drops +| Wrecked Hector's hydraulic connector. +| +| There once was a fellow named Moorehead, +| Who had an affair with a warhead. +| His wife moved away +| The very next day- +| She *was* always kind of a sorehead. +| +| There was a technician named Urban, +| Who had an affair with a turbine. +| "It's much nicer," he said, +| "Than a woman in bed, +| And it's sure as hell cheaper than bourbon!" +| +| There once was a fellow named Slattery +| Who was fond of the course-gyro battery. +| With that 50-volt shock, +| What was left of his cock +| Was all slimy and sloppy and spattery. +| +| Ther was a young fellow named Pope, +| Who plugged into an *os*-cillo-*scope*. +| The cyclical trace +| Of their carnal embrace +| Had a damn nearly infinite slope. +| +| There was a young fellow named Yuri, +| Fucked the nozzle right up its venturi. +| He had woes without cease +| From his local police, +| And a hell of a time with the jury +| +| There was a young man named McGuire, +| Who was fond of the pitch amplifier. +| But a number of shorts +| Left him covered with warts, +| And set half the bedroom on fire. +| +| There once was a fellow named Ritter, +| Who slept with a guidance transmitter. +| It shriveled his cock, +| Which fell off in his sock, +| And made him exceedingly bitter. +| +| There once was a fellow named Schroeder, +| Who buggered the vane servomotor. +| He soon grew a prong +| On the end of his schlong, +| And hired himself a promoter. +| +| There was a young man from Decatur, +| Who slept with a LOX generator. +| His balls and his prick +| Froze solid read quick, +| And his asshole a little bit later. |