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This page (revision-3) was last changed on 07-May-2018 20:47 by Maury Markowitz  

This page was created on 16-Nov-2015 00:33 by Roland B. Wassenberg

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The U-BASIC is just the Atari BASIC rearranged so that it resides under the OS ROM. As a result, it offers 8k RAM more for your programs: depending on the configuration, there should be up to 46042 bytes free for that.\\
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Additionally the U-BASIC is also sligthly faster than the ordinary one. This is so thanks to the so called FASTCHIP, i.e. Charles's Marslett fast FP package, that has been compiled into.\\
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The U-BASIC is a version of [Atari BASIC] Revision C that has been recompiled so that it resides under the OS ROM in the XL and XE machines. As a result, it offers 8k RAM more for your programs: depending on the configuration, there should be up to 46042 bytes free. This is very useful when you have a program that is too large to use with DOS installed, it should be able to run with any DOS using U-BASIC.
U-BASIC also replaces the original, and very slow, floating-point math libraries found in the Atari OS ROM as part of its loading process. These are replaced by the routines from Charles's Marslett fast FP package, originally part of the Newell FASTCHIP upgrade. These are slightly slower than the versions found in [TURBO-BASIC XL], but much, much faster than the version found in the original ROM, which was also used in Atari BASIC.
Version Date Modified Size Author Changes ... Change note
3 07-May-2018 20:47 1.108 kB Maury Markowitz to previous
2 07-May-2018 20:00 0.677 kB Maury Markowitz to previous | to last
1 16-Nov-2015 00:33 0.679 kB Roland B. Wassenberg to last U-Basic
« This page (revision-3) was last changed on 07-May-2018 20:47 by Maury Markowitz