PACT (compiler)

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PACT was a series of compilers for the IBM 701 and IBM 704 scientific computers. Their development was conducted jointly by IBM and a committee of customers starting in 1954. PACT I was developed for the 701, and PACT IA for the 704. The emphasis in that early generation of compilers was minimization of the memory footprint, because memory was a very expensive resource at the time.[1] The word "compiler" was not in widespread use at the time, so most of the 1956 papers described it as an "(automatic) coding system",[2][3] although the word compiler was also used in some papers.[4][5]

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  1. ^ Allen, F. E. (September 1981). "The history of language processor technology in IBM". IBM Journal of Research and Development. 25 (5): 537. CiteSeerX accessible. doi:10.1147/rd.255.0535. 
  2. ^ Melahn, Wesley S. (1956). "A Description of a Cooperative Venture in the Production of an Automatic Coding System". J. ACM. 3: 266–271. doi:10.1145/320843.320844. 
  3. ^ Baker, Charles L. (1956). "The PACT I Coding System for the IBM Type 701". J. ACM. 3: 272–278. doi:10.1145/320843.320845. 
  4. ^ Mock, Owen R. (1956). "Logical Organization of the PACT I Compiler". J. ACM. 3: 279–287. doi:10.1145/320843.320846. 
  5. ^ Miller, Jr., Robert C.; Oldfield, Bruce (1956). "Producing Computer Instructions for the PACT I Compiler". J. ACM. 3: 288–291. doi:10.1145/320843.320847.