Vilnius BASIC
dialect of the BASIC programming language
Vilnius BASIC, sometimes known as BK BASIC, is a dialect of the BASIC programming language running on the Elektronika BK-0010-01/BK-0011M and UKNC computers. It was developed at Vilnius University, located in Lithuania which was a republic of the Soviet Union at the time.
In contrast to most microcomputer dialects of BASIC of the era, which were interpreters, Vilnius BASIC was a compile and go language that compiled the source when the user entered the RUN command. It was otherwise similar to GW-BASIC and MSX BASIC in style and most features, although it lacked some of the multimedia commands found in MSX. One oddity was that it did not allow more than one statement on a single line, a feature normally implemented using the colon. It also lacked the ability to open more than one data file at a time.
Only the UKNC version had a full-screen editor, versions of the 0010 series machines used a line editor. Machine-dependent features, like graphics operators, parameters, and PEEK/POKE addresses were also different among the machines.
Description
Program editing
In contrast to most BASIC dialects of the era, Vilnius BASIC was a compile and go system, not an interpreter. When the user types RUN, the compiler reads the code and produces a threaded code executable that it then ran. Nevertheless, this detail was largely invisible to the user, as the system still allowed statements to be typed in without a line number for direct (immediate) mode, or with a number for indirect mode in which case the new line was added to the program or replaced the same-numbered line if it already existed.
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This entry incorporates text from “Vilnius BASIC” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.