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The UCS architecture uses a common syntax analyzer, separate semantic front ends for each language and a common back-end and optimizer. There is also a common language runtime environment. The UCS system was developed starting in 1969 and initially included PL/I and Pascal. FORTRAN and COBOL were soon added. Ada was added later.
The tables are indexed by level – level 0 refers to the Bank Descriptor Table (BDT) based on B16, level 2 the BDT based on B18, etc. The level 0 and level 2 BDTs are common to all threads in the system. Every run (process) has its own level 4 BDT, and that BDT is common to all threads in the run. Every user thread has its own unshared level 6 ...
Now LINC is known as Unisys Enterprise Application Environment (EAE) and builds applications by generating executable code (Cobol)for Unisys ClearPath systems, Dorado and Libra (formerly Burroughs A-Series & Sperry OS1100 mainframes), Microsoft Windows, and various Unix and Linux platforms. It will also generate GUI front-end clients in Java
OS 2200 is the operating system for the Unisys ClearPath Dorado family of mainframe systems. The operating system kernel of OS 2200 is a lineal descendant of Exec 8 for the UNIVAC 1108 and was previously known as OS 1100. Documentation and other information on current and past Unisys systems can be found on the Unisys public support website ...
COBOL (/ ˈ k oʊ b ɒ l,-b ɔː l /; an acronym for "common business-oriented language") is a compiled English-like computer programming language designed for business use. It is an imperative, procedural, and, since 2002, object-oriented language.
The Unisys Data Management System II (DMSII) is a database system originally created by the Burroughs Corporation in 1972. It was available on the Burroughs (later Unisys ) Small (B1000), Medium (4000, V Series) and Large System (5000, 6000, 7000) product lines.
Unisys cancelled further V series hardware development in 1991, and support ended in 2004. [6] In the B4900 and later machines, integer operations of 10 digits or fewer were now handled in parallel; only longer operands continued to use the serial method. And all floating point operations were limited to 17 digits of precision.
As it is an assembly language, BAL uses the native instruction set of the IBM mainframe architecture on which it runs, System/360, just as the successors to BAL use the native instruction sets of the IBM mainframe architectures on which they run, including System/360, System/370, System/370-XA, ESA/370, ESA/390, and z/Architecture.