Pdp 11

SEX

[Sun Users' Group & elsewhere] n.

Software EXchange. A technique invented by the blue-green algae hundreds of millions of years ago to speed up their evolution, which had been terribly slow up until then. Today, SEX parties are popular among hackers and others (of course, these are no longer limited to exchanges of genetic software). In general, SEX parties are a {Good Thing}, but unprotected SEX can propagate a {virus}. See also {pubic directory}.
The rather Freudian mnemonic often used for Sign EXtend, a machine instruction found in the {PDP-11} and many other architectures. The RCA 1802 chip used in the early Elf and SuperElf personal computers had a `SEt X register' SEX instruction, but this seems to have had little folkloric impact. The Data General, instruction set also had SEX.
{DEC}'s engineers nearly got a {PDP-11} assembler that used the SEX mnemonic out the door at one time, but (for once) marketing wasn't asleep and forced a change. That wasn't the last time this happened, either. The author of The Intel 8086 Primer, who was one of the original designers of the 8086, noted that there was originally a SEX instruction on that processor, too. He says that Intel management got cold feet and decreed that it be changed, and thus the instruction was renamed CBW and CWD (depending on what was being extended). Amusingly, the Intel 8048 (the microcontroller used in IBM, PC, keyboards) is also missing straight SEX but has logical-or and logical-and instructions ORL and ANL.

The Motorola 6809, used in the Radio Shack Color Computer and in U.K.'s `Dragon 32' personal computer, actually had an official SEX instruction; the 6502 in the Apple II with which it competed did not. British hackers thought this made perfect mythic sense; after all, it was commonly observed, you could (on some theoretical level) have sex with a dragon, but you can't have sex with an apple.

Marcadores: apple, Computer, Hardware, IBM, PDP-11, Software, Virus

# 5/19/2009 06:31:00 PM, Comentários, Links para esta postagem,

grind

[MIT and Berkeley; now rare] To prettify hardcopy of code, especially LISP code, by reindenting lines, printing keywords and comments in distinct fonts (if available), etc. This usage was associated with the MacLISP community and is now rare; {prettyprint} was and is the generic term for such operations.
[Unix] To generate the formatted version of a document from the troff, TeX, or Scribe source.
[common] To run seemingly interminably, esp. (but not necessarily) if performing some tedious and inherently useless task. Similar to {crunch} or {grovel}. Grinding has a connotation of using a lot of CPU time, but it is possible to grind a disk, network, etc. See also {hog}.
To make the whole system slow. "Troff really grinds a PDP-11."
grind grind excl. Roughly, "Isn't the machine slow today!"

Marcadores: Code, Common, Languages, Lisp, MIT, PDP-11, Programming, Source, TeX, Unix

# 5/09/2009 11:31:00 PM, Comentários, Links para esta postagem,