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Language peer sets for EPL: United States↑ United States/1966↑ Designed 1966 ↑ 1960s languages ↑ Third generation↑ High Cold War↑ Genus IBM PL/Is ↑ Multi-purpose ↑ IBM PL/Is↑ PL/I Languages↑ Imperative ↑ IBM PL/Is/1966↑ PL/I Languages/1966↑ Imperative/1966↑ IBM PL/Is/United States↑ PL/I Languages/United States↑ Imperative/United States↑ Multi-purpose ↑ Multi-purpose/1966↑ Multi-purpose/us ↑ EPL(ID:255/epl001)Early PL/1alternate simple viewCountry: United States Designed 1966 Published: 1966 Genus: IBM PL/Is Sammet category: Multi-purpose For Early PL/I. McIlroy, Morris et al. PL/I subset dialect, the first running PL/I compiler. Used by Bell Labs and MIT to write Multics, EPL had extensions to handle the segment/offset nature of Multics pointers. Programming Language #1, invented by George Radin of IBM in 1964. Combining scientific features from FORTRAN, business features like records from COBOL, and block structuring from Algol, PL/I's future looked rosy in 1965 when the team chose it for the Multics systems programming language and the idea of coding an operating system in a "higher level language" was radical. Multics's storage models, procedure models, data types, and run-time architecture were all designed around those of the PL/I language, and all system APIs were given in PL/I. Use of any other language for systems programming tasks was actively and officially discouraged. Nonetheless, over the years certain critical subsystems of substantive complexity and bulk (notably page control and the scheduler) were recast into assembler language to optimize performance. The version 2 Multics PL/I implementation (Bob Freiburghouse and Barry Wolman, chief architects), is arguably the preeminent PL/I implementation of record. [BSG] Places Related languages
References: in (1969) Datamation 15(5) May 1969 in (1969) Datamation 15(5) May 1969 in (1969) Datamation 15(5) May 1969 in (1969) Datamation 15(5) May 1969 in (1969) Datamation 15(5) May 1969 in [LSI 1971] (1971) [ACM] SIGPLAN Notices 6(10) October 1971 Proceedings of the SIGPLAN symposium on Languages for system implementation 1971, Lafayette, Indiana, United States; October, 1971 in [AFIPS] (1969) [AFIPS] Proceedings of the 1969 Fall Joint Computer Conference FJCC 35 in [ACM] (1998) [ACM] ACM Computing Surveys (CSUR) 30(2) June 1998 in [ACM] (1998) [ACM] ACM Computing Surveys (CSUR) 30(2) June 1998 Search in: Google Google scholar World Cat Yahoo Overture DBLP Monash bib NZ IEEE  ACM portal CiteSeer CSB ncstrl jstor Bookfinder |