AtariWiki V3.1: OSS Basic A+

OSS Basic A+#

Background#

Atari BASIC was originally written by a 3rd party company, Shepardson Microsystems. An early version was delivered in late 1978 for demonstration purposes so Atari could show it at the CES in January 1979. To the programmer's surprise, they later learned thar Atari began burning this version to ROM cartridges as the final product, in spite of a number of bugs having been found and corrected in the meantime.

Shortly after the release of Atari BASIC, the owner of Shepardson decided to dissolve the company. The Atari staff formed their own company, Optimized Systems Software (OSS), and purchased the licenses to the Atari code. Basic A+ was one of the companies earlier products, consisting largely of these bug-fixed versions of Atari BASIC along with a few expansions. Too large to fit on a 8kB ROM, the product was sold on disk only.

Among the notable additions were PRINT USING (for formatted output), trace and debug enhancements, and direct DOS commands. Because BASIC A+ had to be purchased, programs developed using its extended features could not be shared with people who did not own the interpreter. It was never particularly popular, and soon superseded by the greatly improved Basic XL.