X11-Basic is a dialect of the BASIC programming language with graphics capability.
xbvm can be used to execute bytecode-binaries which have been compiled with xbbc(1) before. These bytecode files run about 10-20 times faster than the interpreted .bas files.
xbvm is a run-only interpreter, it has no interactive mode and no editing features. It is possible to pack one BASIC program together with the virtual machine to form a single excecutable file.
For a desciption of the X11-Basic language and usage of the interpreter see xbasic(1).
xbvm processes one input file. The suffix of the input file is usually .b.
For detailed help and description of the implemented basic commands take a look at the README file coming with the package and the X11-Basic manual.
xbvm testme.b xbvm -v testme.b
The bytecode interpreter is highly optimized, so that the gain in excecution speed is immense. Especially complex formulas are speed up by a factor 20. Last but not least, there is no way to recreate the source code from the bytecode.
If you find a bug in the X11-Basic virtual machine, you should report it. But first, you should make sure that it really is a bug, and that it appears in the latest version of the X11-Basic package that you have.
Once you have determined that a bug actually exists, mail a bug report to email@example.com. If you have a fix, you are welcome to mail that as well! Suggestions may be mailed to the bug tracking system.
Comments and bug reports concerning this manual page should be directed to firstname.lastname@example.org.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.