BBC BASIC: Difference between revisions

Revision as of 17:13, 7 April 2005

Revision as of 16:45, 1 May 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BASIC I, the original version, available on BBC A and BBC B, was superseded by BASIC II which added 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 the availability of the alternative spelling of the command <code>COLOR</code>. The UK version of BASIC III listed the same command as <code>COLOUR</code>.

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.