65 lines
2.9 KiB
ReStructuredText
65 lines
2.9 KiB
ReStructuredText
=============================
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``bas`` Bas BASIC Interpreter
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=============================
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Introduction
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------------
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Bas is an interpreter for the classic dialect of the programming language BASIC.
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It is pretty compatible to typical BASIC interpreters of the 1980s, unlike some
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other UNIX BASIC interpreters, that implement a different syntax, breaking
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compatibility to existing programs. Bas offers many ANSI BASIC statements for
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structured programming, such as procedures, local variables and various loop
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types. Further there are matrix operations, automatic LIST indentation and many
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statements and functions found in specific classic dialects. Line numbers are
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not required.
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The interpreter tokenises the source and resolves references to variables and
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jump targets before running the program. This compilation pass increases
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efficiency and catches syntax errors, type errors and references to variables
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that are never initialised. Bas is written in ANSI C for UNIX systems.
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License
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-------
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BAS 2.4 is released as part of NuttX under the standard 3-clause BSD license use
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by all components of NuttX. This is not incompatible with the original BAS 2.4
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licensing
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Copyright (c) 1999-2014 Michael Haardt
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Bas 2.4 Release Notes
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---------------------
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Changes compared to version ``2.3``
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- Matrix inversion on integer arrays with option base 1 fixed.
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- ``PRINT USING`` behaviour for ``!`` fixed.
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- ``PRINT``, separator should advance to the next zone, even if the current
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position is at the start of a zone.
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- Added ``ip()``, ``frac()``, ``fp()``, ``log10()``, ``log2()``, ``min()`` and ``max()``.
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- Fixed ``NEXT`` checking the variable case sensitive.
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- Use ``terminfo`` capability cr to make use of its padding.
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- ``LET`` segmentation fault fixed.
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- ``PRINT`` now uses print items.
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- ``-r`` for restricted operation.
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- ``MAT INPUT`` does not drop excess arguments, but uses them for the next row.
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- License changed to MIT.
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