| slovo | definícia |
risc
(encz) | RISC,RISC [it.] reduced instruction set computer Ritchie |
risc
(czen) | RISC,RISC[it.] reduced instruction set computer Ritchie |
risc
(wn) | RISC
n 1: (computer science) a kind of computer architecture that has
a relatively small set of computer instructions that it can
perform [syn: reduced instruction set computing, {reduced
instruction set computer}, RISC] [ant: CISC, {complex
instruction set computer}, {complex instruction set
computing}] |
risc
(foldoc) | Reduced Instruction Set Computer
RISC
(RISC) A processor whose design is based on the
rapid execution of a sequence of simple instructions rather
than on the provision of a large variety of complex
instructions (as in a Complex Instruction Set Computer).
Features which are generally found in RISC designs are uniform
instruction encoding (e.g. the op-code is always in the same
bit positions in each instruction which is always one word
long), which allows faster decoding; a homogenous {register
set}, allowing any register to be used in any context and
simplifying compiler design; and simple addressing modes
with more complex modes replaced by sequences of simple
arithmetic instructions.
Examples of (more or less) RISC processors are the {Berkeley
RISC}, HP-PA, Clipper, i960, AMD 29000, MIPS R2000
and DEC Alpha. IBM's first RISC computer was the RT/PC
(IBM 801), they now produce the RISC-based {RISC
System/6000} and SP/2 lines.
Despite Apple Computer's bogus claims for their
PowerPC-based Macintoshes, the first RISC processor used
in a personal computer was the Advanced RISC Machine (ARM)
used in the Acorn Archimedes.
(1997-06-03)
|
risc
(vera) | RISC
Reduced Instruction Set Code (CPU)
|
risc
(vera) | RISC
Research Institute for Symbolic Computation (org., Austria)
|
risc
(vera) | RISC
Risk and Incident Sharing and Coordination (IETF, OpenID)
|
| | podobné slovo | definícia |
driscoll
(encz) | Driscoll,Driscoll n: [jmén.] příjmení Zdeněk Brož a automatický překlad |
frisch
(encz) | Frisch, |
order saurischia
(encz) | order Saurischia, n: |
periscope
(encz) | periscope,periskop n: luke |
polariscope
(encz) | polariscope, n: |
priscilla
(encz) | Priscilla,Sněhurka n: [jmén.] PetrVPriscilla,ženské křestní jméno n: [female] [jmén.] Zdeněk Brož a
automatický překlad |
risc
(encz) | RISC,RISC [it.] reduced instruction set computer Ritchie |
saurischian
(encz) | saurischian, n: |
saurischian dinosaur
(encz) | saurischian dinosaur, n: |
subfamily bassariscidae
(encz) | subfamily Bassariscidae, n: |
driscoll
(czen) | Driscoll,Driscolln: [jmén.] příjmení Zdeněk Brož a automatický překlad |
risc
(czen) | RISC,RISC[it.] reduced instruction set computer Ritchie |
Anthriscus cerefolium
(gcide) | Chervil \Cher"vil\, n. [AS. cerfille, fr. L. caerefolium,
chaerephyllum, Gr. ?; ? to rejoice + ? leaf.] (Bot.)
A plant (Anthriscus cerefolium) with pinnately divided
aromatic leaves, of which several curled varieties are used
in soups and salads.
[1913 Webster] |
Asteriscus
(gcide) | Asteriscus \As`ter*is"cus\, n. [L., an asterisk. See
Asterisk.] (Anat.)
The smaller of the two otoliths found in the inner ear of
many fishes.
[1913 Webster] |
Auriscalp
(gcide) | Auriscalp \Au"ri*scalp\ ([add]"r[i^]*sk[a^]lp), n. [L. auris ear
+ scalpere to scrape.]
An earpick.
[1913 Webster] |
Auriscope
(gcide) | Auriscope \Au"ri*scope\ (-sk[=o]p), n. [L. auris + -scope.]
(Med.)
An instrument for examining the condition of the ear.
[1913 Webster] |
Auriscopy
(gcide) | Auriscopy \Au*ris"co*py\ ([add]*r[i^]s"k[-o]*p[y^]), n.
Examination of the ear by the aid of the auriscope.
[1913 Webster] |
Balistes capriscus
(gcide) | Trigger \Trig"ger\, n. [For older tricker, from D. trekker, fr.
trekken to draw, pull. See Trick, n.]
1. A catch to hold the wheel of a carriage on a declivity.
[1913 Webster]
2. (Mech.) A piece, as a lever, which is connected with a
catch or detent as a means of releasing it; especially
(Firearms), the part of a lock which is moved by the
finger to release the cock and discharge the piece.
[1913 Webster]
Trigger fish (Zool.), a large plectognath fish ({Balistes
Carolinensis} or Balistes capriscus) common on the
southern coast of the United States, and valued as a food
fish in some localities. Its rough skin is used for
scouring and polishing in the place of sandpaper. Called
also leather jacket, and turbot.
[1913 Webster] |
Bassariscidae
(gcide) | Bassariscidae \Bassariscidae\ n.
a division of mammals, in some classifications considered a
separate family.
Syn: subfamily Bassariscidae.
[WordNet 1.5] |
Bassariscus
(gcide) | Bassariscus \Bassariscus\ n.
a genus comprising the cacomistles. See bassarisk.
Syn: genus Bassariscus.
[WordNet 1.5] |
Bassariscus astutus
(gcide) | bassarisk \bassarisk\ n.
A raccoonlike omnivorous mammal (Bassariscus astutus) of
Mexico and southwestern U. S. having a long bushy tail with
black and white rings.
Syn: cacomistle, cacomixle, coon cat, raccoon fox, ringtail,
ring-tailed cat, civet cat, miner's cat.
[WordNet 1.5] |
Centriscoid
(gcide) | Centriscoid \Cen*tris"coid\, a. [NL. Centriscus (r. Gr. ? a kind
of fish) + -oid.] (Zool.)
Allied to, or resembling, the genus Centriscus, of which
the bellows fish is an example.
[1913 Webster] |
Centriscus scolopax
(gcide) | Bellows fish \Bel"lows fish`\ (Zool.)
A European fish (Centriscus scolopax), distinguished by a
long tubular snout, like the pipe of a bellows; -- called
also trumpet fish, and snipe fish.
[1913 Webster] |
Cladium Mariscus
(gcide) | Saw \Saw\, n. [OE. sawe, AS. sage; akin to D. zaag, G. s[aum]ge,
OHG. sega, saga, Dan. sav, Sw. s[*a]g, Icel. s["o]g, L.
secare to cut, securis ax, secula sickle. Cf. Scythe,
Sickle, Section, Sedge.]
An instrument for cutting or dividing substances, as wood,
iron, etc., consisting of a thin blade, or plate, of steel,
with a series of sharp teeth on the edge, which remove
successive portions of the material by cutting and tearing.
[1913 Webster]
Note: Saw is frequently used adjectively, or as the first
part of a compound.
[1913 Webster]
Band saw, Crosscut saw, etc. See under Band,
Crosscut, etc.
Circular saw, a disk of steel with saw teeth upon its
periphery, and revolved on an arbor.
Saw bench, a bench or table with a flat top for for sawing,
especially with a circular saw which projects above the
table.
Saw file, a three-cornered file, such as is used for
sharpening saw teeth.
Saw frame, the frame or sash in a sawmill, in which the
saw, or gang of saws, is held.
Saw gate, a saw frame.
Saw gin, the form of cotton gin invented by Eli Whitney, in
which the cotton fibers are drawn, by the teeth of a set
of revolving circular saws, through a wire grating which
is too fine for the seeds to pass.
Saw grass (Bot.), any one of certain cyperaceous plants
having the edges of the leaves set with minute sharp
teeth, especially the Cladium Mariscus of Europe, and
the Cladium effusum of the Southern United States. Cf.
Razor grass, under Razor.
Saw log, a log of suitable size for sawing into lumber.
Saw mandrel, a mandrel on which a circular saw is fastened
for running.
Saw pit, a pit over which timbor is sawed by two men, one
standing below the timber and the other above. --Mortimer.
Saw sharpener (Zool.), the great titmouse; -- so named from
its harsh call note. [Prov. Eng.]
Saw whetter (Zool.), the marsh titmouse ({Parus
palustris}); -- so named from its call note. [Prov. Eng.]
Scroll saw, a ribbon of steel with saw teeth upon one edge,
stretched in a frame and adapted for sawing curved
outlines; also, a machine in which such a saw is worked by
foot or power.
[1913 Webster] |
Iriscope
(gcide) | Iriscope \I"ri*scope\, n. [Iris + -scope.]
A philosophical toy for exhibiting the prismatic tints by
means of thin films.
[1913 Webster] |
Jurisconsult
(gcide) | Jurisconsult \Ju`ris*con"sult\, n. [L. jurisconsultus; jus,
juris, right + consulere, consultum, to consult: cf. F.
jurisconsulte.] (Law)
A man learned in the civil law; an expert in juridical
science; a professor of jurisprudence; a jurist.
[1913 Webster] |
Morisco
(gcide) | Morisco \Mo*ris"co\ (m[-o]*r[i^]s"k[-o]), a. [Sp. See Morris
the dance.]
Moresque.
[1913 Webster]Morisco \Mo*ris"co\, n. [Sp. morisco Moorish.]
A thing of Moorish origin; as:
(a) The Moorish language.
(b) A Moorish dance, now called morris dance. --Marston.
(c) One who dances the Moorish dance. --Shak.
(d) Moresque decoration or architecture.
[1913 Webster] |
Morris-chair
(gcide) | Morris-chair \Mor"ris-chair`\, n. [Prob. fr. the proper name
Morris.]
A kind of easy-chair with a back which may be lowered or
raised.
[Webster 1913 Suppl.] |
Orthagoriscus mola
(gcide) | Sunfish \Sun"fish`\, n. (Zool.)
(a) A very large oceanic plectognath fish (Mola mola, {Mola
rotunda}, or Orthagoriscus mola) having a broad body
and a truncated tail.
(b) Any one of numerous species of perch-like North American
fresh-water fishes of the family Centrachidae. They
have a broad, compressed body, and strong dorsal spines.
Among the common species of the Eastern United States are
Lepomis gibbosus (called also bream, pondfish,
pumpkin seed, and sunny), the blue sunfish, or
dollardee (Lepomis pallidus), and the long-eared
sunfish (Lepomis auritus). Several of the species are
called also pondfish.
(c) The moonfish, or bluntnosed shiner.
(d) The opah.
(e) The basking, or liver, shark.
(f) Any large jellyfish.
[1913 Webster] |
Periscian
(gcide) | Periscian \Pe*ris"cian\, a. [Gr. ?; peri` around + ? shadow: cf.
F. p['e]riscien.]
Having the shadow moving all around.
[1913 Webster] Periscians |
Periscians
(gcide) | Periscians \Pe*ris"cians\, Periscii \Pe*ris"ci*i\, n. pl. [NL.
See Periscian.]
Those who live within a polar circle, whose shadows, during
some summer days, will move entirely round, falling toward
every point of the compass.
[1913 Webster] |
Periscii
(gcide) | Periscians \Pe*ris"cians\, Periscii \Pe*ris"ci*i\, n. pl. [NL.
See Periscian.]
Those who live within a polar circle, whose shadows, during
some summer days, will move entirely round, falling toward
every point of the compass.
[1913 Webster] |
Periscope
(gcide) | Periscope \Per"i*scope\, n. [Pref. peri- + -scope.]
A general or comprehensive view. [archaic]
[1913 Webster]
2. An optical instrument of tubular shape containing an
arrangement of lenses and mirrors (or prisms), allowing a
person to observe a field of view otherwise obstructed, as
beyond an obstructing object or (as in submarines) above
the surface of the water.
[PJC] |
Periscopic
(gcide) | Periscopic \Per`i*scop"ic\, a. [Cf. F. p['e]riscopique.]
Viewing all around, or on all sides.
[1913 Webster]
2. of or relating to a periscope[2].
[1913 Webster]
Periscopic spectacles (Opt.), spectacles having
concavo-convex or convexo-concave lenses with a
considerable curvature corresponding to that of the eye,
to increase the distinctness of objects viewed obliquely.
[1913 Webster] |
Periscopic spectacles
(gcide) | Periscopic \Per`i*scop"ic\, a. [Cf. F. p['e]riscopique.]
Viewing all around, or on all sides.
[1913 Webster]
2. of or relating to a periscope[2].
[1913 Webster]
Periscopic spectacles (Opt.), spectacles having
concavo-convex or convexo-concave lenses with a
considerable curvature corresponding to that of the eye,
to increase the distinctness of objects viewed obliquely.
[1913 Webster] |
Polariscope
(gcide) | Polariscope \Po*lar"i*scope\, n. [Polar + -scope.] (Opt.)
An instrument consisting essentially of a polarizer and an
analyzer, used for polarizing light, and analyzing its
properties.
[1913 Webster] |
Polariscopic
(gcide) | Polariscopic \Po*lar`i*scop"ic\, a. (Opt.)
Of or pertaining to the polariscope; obtained by the use of a
polariscope; as, polariscopic observations.
[1913 Webster] |
Polariscopy
(gcide) | Polariscopy \Po`lar*is"co*py\, n. (Opt.)
The art or rocess of making observations with the
polariscope.
[1913 Webster] |
Priscillianist
(gcide) | Priscillianist \Pris*cil"lian*ist\, n. (Eccl. Hist.)
A follower of Priscillian, bishop of Avila in Spain, in the
fourth century, who mixed various elements of Gnosticism and
Manicheism with Christianity.
[1913 Webster] |
Spinthariscope
(gcide) | Spinthariscope \Spin*thar"i*scope\, n. [Gr. spinqari`s spark +
-scope.]
A small instrument containing a minute particle of a radium
compound mounted in front of a fluorescent screen and viewed
with magnifying lenses. The tiny flashes produced by the
continual bombardment of the screen by the [alpha] rays are
thus rendered visible. -- Spin*thar`i*scop"ic, a.
[Webster 1913 Suppl.] |
Spinthariscopic
(gcide) | Spinthariscope \Spin*thar"i*scope\, n. [Gr. spinqari`s spark +
-scope.]
A small instrument containing a minute particle of a radium
compound mounted in front of a fluorescent screen and viewed
with magnifying lenses. The tiny flashes produced by the
continual bombardment of the screen by the [alpha] rays are
thus rendered visible. -- Spin*thar`i*scop"ic, a.
[Webster 1913 Suppl.] |
Telepolariscope
(gcide) | Telepolariscope \Tel`e*po*lar"i*scope\, n. [Gr. ? far off + E.
polariscope.] (Opt.)
A polariscope arranged to be attached to a telescope.
--Lockyer.
[1913 Webster] |
Variscite
(gcide) | Variscite \Var"is*cite\, n. [So called from Variscia in
Germany.] (Min.)
An apple-green mineral occurring in reniform masses. It is a
hydrous phosphate of alumina.
[1913 Webster] |
veriscope
(gcide) | Cinematograph \Cin`e*mat"o*graph\, n. [Gr. ?, ?, motion +
-graph.]
1. an older name for a movie projector, a machine,
combining magic lantern and kinetoscope features, for
projecting on a screen a series of pictures, moved rapidly
(25 to 50 frames per second) and intermittently before an
objective lens, and producing by persistence of vision the
illusion of continuous motion; a moving-picture projector;
also, any of several other machines or devices producing
moving pictorial effects. Other older names for the {movie
projector} are animatograph, biograph, bioscope,
electrograph, electroscope, kinematograph,
kinetoscope, veriscope, vitagraph, vitascope,
zoogyroscope, zoopraxiscope, etc.
The cinematograph, invented by Edison in 1894, is
the result of the introduction of the flexible film
into photography in place of glass. --Encyc. Brit.
[Webster 1913 Suppl.]
2. A camera for taking chronophotographs for exhibition by
the instrument described above.
[Webster 1913 Suppl.] |
anthriscus
(wn) | Anthriscus
n 1: chervil: of Europe, North Africa and Asia [syn:
Anthriscus, genus Anthriscus] |
anthriscus cereifolium
(wn) | Anthriscus cereifolium
n 1: aromatic annual Old World herb cultivated for its finely
divided and often curly leaves for use especially in soups
and salads [syn: chervil, beaked parsley, {Anthriscus
cereifolium}] |
anthriscus sylvestris
(wn) | Anthriscus sylvestris
n 1: coarse erect biennial Old World herb introduced as a weed
in eastern North America [syn: cow parsley, {wild
chervil}, Anthriscus sylvestris] |
auriscope
(wn) | auriscope
n 1: medical instrument consisting of a magnifying lens and
light; used for examining the external ear (the auditory
meatus and especially the tympanic membrane) [syn:
otoscope, auriscope, auroscope] |
bassariscidae
(wn) | Bassariscidae
n 1: in some classifications considered a separate family [syn:
Bassariscidae, subfamily Bassariscidae] |
bassariscus
(wn) | Bassariscus
n 1: cacomistles [syn: Bassariscus, genus Bassariscus] |
bassariscus astutus
(wn) | Bassariscus astutus
n 1: raccoon-like omnivorous mammal of Mexico and the
southwestern United States having a long bushy tail with
black and white rings [syn: bassarisk, cacomistle,
cacomixle, coon cat, raccoon fox, ringtail, {ring-
tailed cat}, civet cat, miner's cat, {Bassariscus
astutus}] |
betsy griscom ross
(wn) | Betsy Griscom Ross
n 1: American seamstress said to have made the first American
flag at the request of George Washington (1752-1836) [syn:
Ross, Betsy Ross, Betsy Griscom Ross] |
centriscidae
(wn) | Centriscidae
n 1: shrimpfishes [syn: Centriscidae, family Centriscidae] |
family centriscidae
(wn) | family Centriscidae
n 1: shrimpfishes [syn: Centriscidae, family Centriscidae] |
frisch
(wn) | Frisch
n 1: British physicist (born in Austria) who with Lise Meitner
recognized that Otto Hahn had produced a new kind of
nuclear reaction which they named nuclear fission; Frisch
described the explosive potential of a chain nuclear
reaction (1904-1979) [syn: Frisch, Otto Frisch, {Otto
Robert Frisch}]
2: Norwegian economist noted for his work in econometrics
(1895-1973) [syn: Frisch, Ragnar Frisch, {Ragnar Anton
Kittil Frisch}]
3: Austrian zoologist noted for his studies of honeybees
(1886-1982) [syn: Frisch, Karl von Frisch] |
genus anthriscus
(wn) | genus Anthriscus
n 1: chervil: of Europe, North Africa and Asia [syn:
Anthriscus, genus Anthriscus] |
genus bassariscus
(wn) | genus Bassariscus
n 1: cacomistles [syn: Bassariscus, genus Bassariscus] |
karl von frisch
(wn) | Karl von Frisch
n 1: Austrian zoologist noted for his studies of honeybees
(1886-1982) [syn: Frisch, Karl von Frisch] |
order saurischia
(wn) | order Saurischia
n 1: extinct terrestrial reptiles: theropods (carnivorous);
sauropods (herbivorous) [syn: Saurischia, {order
Saurischia}] |
otto frisch
(wn) | Otto Frisch
n 1: British physicist (born in Austria) who with Lise Meitner
recognized that Otto Hahn had produced a new kind of
nuclear reaction which they named nuclear fission; Frisch
described the explosive potential of a chain nuclear
reaction (1904-1979) [syn: Frisch, Otto Frisch, {Otto
Robert Frisch}] |
otto robert frisch
(wn) | Otto Robert Frisch
n 1: British physicist (born in Austria) who with Lise Meitner
recognized that Otto Hahn had produced a new kind of
nuclear reaction which they named nuclear fission; Frisch
described the explosive potential of a chain nuclear
reaction (1904-1979) [syn: Frisch, Otto Frisch, {Otto
Robert Frisch}] |
periscope
(wn) | periscope
n 1: an optical instrument that provides a view of an otherwise
obstructed field |
polariscope
(wn) | polariscope
n 1: an optical device used to measure the rotation of the plane
of vibration of polarized light [syn: polarimeter,
polariscope] |
priscoan
(wn) | Priscoan
n 1: the earliest eon in the history of the Earth from the first
accretion of planetary material (around 4,600 million years
ago) until the date of the oldest known rocks (about 3,800
million years ago); no evidence of life [syn: Hadean,
Hadean time, Hadean eon, Hadean aeon, Priscoan,
Priscoan eon, Priscoan aeon] |
priscoan aeon
(wn) | Priscoan aeon
n 1: the earliest eon in the history of the Earth from the first
accretion of planetary material (around 4,600 million years
ago) until the date of the oldest known rocks (about 3,800
million years ago); no evidence of life [syn: Hadean,
Hadean time, Hadean eon, Hadean aeon, Priscoan,
Priscoan eon, Priscoan aeon] |
priscoan eon
(wn) | Priscoan eon
n 1: the earliest eon in the history of the Earth from the first
accretion of planetary material (around 4,600 million years
ago) until the date of the oldest known rocks (about 3,800
million years ago); no evidence of life [syn: Hadean,
Hadean time, Hadean eon, Hadean aeon, Priscoan,
Priscoan eon, Priscoan aeon] |
ragnar anton kittil frisch
(wn) | Ragnar Anton Kittil Frisch
n 1: Norwegian economist noted for his work in econometrics
(1895-1973) [syn: Frisch, Ragnar Frisch, {Ragnar Anton
Kittil Frisch}] |
ragnar frisch
(wn) | Ragnar Frisch
n 1: Norwegian economist noted for his work in econometrics
(1895-1973) [syn: Frisch, Ragnar Frisch, {Ragnar Anton
Kittil Frisch}] |
risc
(wn) | RISC
n 1: (computer science) a kind of computer architecture that has
a relatively small set of computer instructions that it can
perform [syn: reduced instruction set computing, {reduced
instruction set computer}, RISC] [ant: CISC, {complex
instruction set computer}, {complex instruction set
computing}] |
saurischia
(wn) | Saurischia
n 1: extinct terrestrial reptiles: theropods (carnivorous);
sauropods (herbivorous) [syn: Saurischia, {order
Saurischia}] |
saurischian
(wn) | saurischian
n 1: herbivorous or carnivorous dinosaur having a three-pronged
pelvis like that of a crocodile [syn: saurischian,
saurischian dinosaur] |
saurischian dinosaur
(wn) | saurischian dinosaur
n 1: herbivorous or carnivorous dinosaur having a three-pronged
pelvis like that of a crocodile [syn: saurischian,
saurischian dinosaur] |
subfamily bassariscidae
(wn) | subfamily Bassariscidae
n 1: in some classifications considered a separate family [syn:
Bassariscidae, subfamily Bassariscidae] |
tovarisch
(wn) | tovarisch
n 1: a comrade (especially in Russian communism) [syn:
tovarich, tovarisch] |
acorn risc machine
(foldoc) | Acorn RISC Machine
The original name of the Advanced RISC Machine.
(1995-03-07)
|
advanced risc computing specification
(foldoc) | Advanced RISC Computing Specification
ARC
ARCS
(ARC, previously ARCS) The baseline
hardware requirements for an ACE-compatible system.
(1995-01-16)
|
advanced risc machine
(foldoc) | Advanced RISC Machine
(ARM, Originally Acorn RISC Machine). A series
of low-cost, power-efficient 32-bit RISC microprocessors
for embedded control, computing, digital signal processing,
games, consumer multimedia and portable applications. It
was the first commercial RISC microprocessor (or was the {MIPS
R2000}?) and was licensed for production by {Asahi Kasei
Microsystems}, Cirrus Logic, GEC Plessey Semiconductors,
Samsung, Sharp, Texas Instruments and VLSI Technology.
The ARM has a small and highly orthogonal instruction set,
as do most RISC processors. Every instruction includes a
four-bit code which specifies a condition (of the {processor
status register}) which must be satisfied for the instruction
to be executed. Unconditional execution is specified with a
condition "true".
Instructions are split into load and store which access memory
and arithmetic and logic instructions which work on
registers (two source and one destination).
The ARM has 27 registers of which 16 are accessible in any
particular processor mode. R15 combines the program counter
and processor status byte, the other registers are general
purpose except that R14 holds the return address after a
subroutine call and R13 is conventionally used as a {stack
pointer}. There are four processor modes: user, interrupt
(with a private copy of R13 and R14), fast interrupt (private
copies of R8 to R14) and supervisor (private copies of R13
and R14). The ALU includes a 32-bit barrel-shifter
allowing, e.g., a single-cycle shift and add.
The first ARM processor, the ARM1 was a prototype which was
never released. The ARM2 was originally called the Acorn RISC
Machine. It was designed by Acorn Computers Ltd. and used
in the original Archimedes, their successor to the {BBC
Micro} and BBC Master series which were based on the
eight-bit 6502 microprocessor. It was clocked at 8 MHz
giving an average performance of 4 - 4.7 MIPS. Development
of the ARM family was then continued by a new company,
Advanced RISC Machines Ltd.
The ARM3 added a fully-associative on-chip cache and
some support for multiprocessing. This was followed by the
ARM600 chip which was an ARM6 processor core with a
4-kilobyte 64-way set-associative cache, an MMU based on
the MEMC2 chip, a write buffer (8 words?) and a
coprocessor interface.
The ARM7 processor core uses half the power of the ARM6
and takes around half the die size. In a full processor
design (ARM700 chip) it should provide 50% to 100% more
performance.
In July 1994 VLSI Technology, Inc. released the ARM710
processor chip.
Thumb is an implementation with reduced code size
requirements, intended for embedded applications.
An ARM800 chip is also planned.
AT&T, IBM, Panasonic, Apple Coputer, Matsushita and
Sanyo either rely on, or manufacture, ARM 32-bit processor
chips.
Usenet newsgroup: news:comp.sys.arm.
(1997-08-05)
|
advanced risc machines ltd.
(foldoc) | Advanced RISC Machines Ltd.
ARM Ltd
(ARM) A company formed in 1990 by Acorn Computers
Ltd., Apple Computer, Inc. and VLSI Technology to market
and develop the Advanced RISC Machine microprocessor
family, originally designed by Acorn.
ARM Ltd. also designs and licenses peripheral chips and
supplies supporting software and hardware tools. In April
1993, Nippon Investment and Finance, a Daiwa Securities
company, became ARM's fourth investor. In May 1994 Samsung
became the sixth large company to have a licence to use the
ARM processor core.
The success of ARM Ltd. and the strategy to widen the
availability of RISC technology has resulted in its chips now
being used in a range of products including the {Apple
Newton}. As measured by an independent authority, more ARM
processors were shipped than SPARC chips in 1993. ARM has
also sold three times more chips than the PowerPC
consortium.
(http://systemv.com/armltd/index.html).
E-mail: armltd.co.uk.
Address: Advanced RISC Machines Ltd. Fulbourn Road, Cherry
Hinton, Cambridge CB1 4JN, UK.
Telephone: +44 (1223) 400 400. Fax: +44 (1223) 400 410.
(1994-11-03)
|
risc
(foldoc) | Reduced Instruction Set Computer
RISC
(RISC) A processor whose design is based on the
rapid execution of a sequence of simple instructions rather
than on the provision of a large variety of complex
instructions (as in a Complex Instruction Set Computer).
Features which are generally found in RISC designs are uniform
instruction encoding (e.g. the op-code is always in the same
bit positions in each instruction which is always one word
long), which allows faster decoding; a homogenous {register
set}, allowing any register to be used in any context and
simplifying compiler design; and simple addressing modes
with more complex modes replaced by sequences of simple
arithmetic instructions.
Examples of (more or less) RISC processors are the {Berkeley
RISC}, HP-PA, Clipper, i960, AMD 29000, MIPS R2000
and DEC Alpha. IBM's first RISC computer was the RT/PC
(IBM 801), they now produce the RISC-based {RISC
System/6000} and SP/2 lines.
Despite Apple Computer's bogus claims for their
PowerPC-based Macintoshes, the first RISC processor used
in a personal computer was the Advanced RISC Machine (ARM)
used in the Acorn Archimedes.
(1997-06-03)
|
|