BBC BASIC: Difference between revisions

Revision as of 16:45, 1 May 2005

Revision as of 22:52, 24 June 2005

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BASIC I, the original version, available on BBC A and BBC B, was superseded by BASIC II which added <code>OPENUP</code> and <code>OSCLI</code> keywords, along with offset assembly and bug fixes.

A [[United States|U.S.]] market version, known as BASIC III, was produced for Acorn's abortive attempt to enter the cross Atlantic computer market - apart from a few bug fixes the only difference was that the availability<code>COLOUR</code> command ofin the alternativeUK spellingversion oflisted the commandas <code>COLOR</code>. Thein UKthe US version of(though BASICboth IIIversions listedaccepted theeither same commandspelling as <code>COLOUR</code>input).

BASIC IV, also known as CMOS BASIC, available on the BBC Master and BBC Master Compact machines, was changed to use the new intructions available in the 65C12 processor, reducing the size of the code and therefore allowing the inclusion of <code>LIST IF</code>, <code>EXT#</code> as a statement, <code>EDIT</code>, <code>TIME$</code>, <code>ON PROC</code>, | in <code>VDU</code> statements and faster floating point. Bug fixes were again included.