TEN15

Ten15 is an algebraically specified abstract machine. It was developed by Foster, Currie et al. at the Defence Evaluation and Research Agency at Malvern, Worcestershire, during the 1980s. It arose from earlier work on the Flex machine, which was a capability architecture implemented via microcode. Ten15 was intended to offer an intermediate language common to all implementations of the Flex architecture for portability purposes. It had the side-effect of making the benefits of that work available on modern processors lacking a microcode facility.

Ten15 served as an intermediate language for compilers, but with several unique features, some of which have still to see the light of day in everyday systems. Firstly, it was strongly typed, yet wide enough in application to support most languages -- C being an exception, chiefly because C deliberately (and some say obtusely) treats a pointer to an array as being identical to a pointer to the first element of that array. This ultimately led to Ten15's development into ANDF and TDF. Secondly, it offered a persistent, write-only filestore mechanism, allowing arbitrary data structures to be written and retrieved without conversion into an external representation.

External links

Ten15

Historical note

Why 'Ten15'? Legend has it that, after several failed attempts, a meeting was called to thrash out a name for the langauge. In desperation, it was suggested that 'we set a target - to come up with a name by 10:15'. And so they did. Other versions have it that in the course of the stalled meeting, Michael Foster looked up at the clock and said 'Why not call it 10:15?'

Usage Frequency: TEN15

"TEN15" is generally used as an unclassified items -- approximately 100.00% of the time. "TEN15" is used about 5 times out of a sample of 100 million words spoken or written in English. Its rank is based on over 700,000 words used in the English language. Some parts-of-speech are not covered due to the samples used by the British National Corpus. (note: percents less than one-hundredth of one percent have been omitted)

Frequency of Internet Keywords: TEN15

Anagrams: TEN15

Scrabble® Enable2K-Verified Anagrams
	Words within the letters "1-5-e-n-t"
	-2 letters: net, ten.
	-3 letters: en, et, ne.
Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro.

Alternative Orthography: TEN15

Hexadecimal (or equivalents, 770AD-1900s) (references)

54 45 4E 31 35

Leonardo da Vinci (1452-1519; backwards) (references)

Binary Code (1918-1938, probably earlier) (references)

01010100 01000101 01001110 00110001 00110101

HTML Code (1990) (references)

&#84 &#69 &#78 &#49 &#53

ISO 10646 (1991-1993) (references)

0054 0045 004E 0031 0035

Encryption (beginner's substitution cypher): (references)

Domain	Definition
Computing	Ten15 A universal intermediate language, predecessor to TDF. Polymorphic? "Ten15: An Overview", P. Core et al, Royal Signals Radar Establishment TR 3977 (Sept 1986). Source: The Free On-line Dictionary of Computing.
Source: compiled by the editor from various references; see credits.

Parts of Speech	Percent	Usage per 100 Million Words	Rank in English
Unclassified Items	100%	5	157,705

Expression	Frequency per Day
ten15	2
Source: compiled by the editor from various references; see credits.

TEN15

Specialty Definition: TEN15

Computing

Specialty Definition: Ten15

See also