even to the Atari 410 cassette drive if need be. A huge advantage over Word Processor was that the program did not load into RAM and thus left much more memory free; on an 800, Word Processor had only about 10 kB free, enough for about one page of text, but AtariWriter had roughly 20 kB free even with DOS loaded, allowing small documents up to about six pages to be held entirely in memory. Programming took place during the summer of 1982 and internal testing took place during the fall of 1982 and into early 1983. Final testing and documentation was largely complete by the February/March time-frame, when a status meeting of the entire Home Computer division was called. Furr described how they handled printers, the program would load a single printer driver at a time, with all four Atari printers supported and others available on disk. The manager refused to support non-Atari printers, and Furr had to call Robinson and tell him to remove the extra drivers. Instead, the manual added a short section stating additional drivers would be available from the Atari Program Exchange (APX). AtariWriter 1.0 was released to production in the spring of 1983. Furr left Atari shortly thereafter and took a position with Datasoft. Three additional minor upgrades were released over the next year, culminating in Version C. The program was an enormous success, becoming one of Atari's best-selling products of all time. Furr was later told that the original cartridge version had sold approximately 800,000 copies. This did not include any foreign language versions, French, Spanish, German and Italian, or the later versions like Plus and 80. Given about 4 million machines sold in total, this represents a significant portion of the entire Atari fleet. Printer drivers The decision to only support Atari printers was a terrible one, one that every product review harped on. Furr began writing drivers on his own at home, and a selection of 10 to 11 of these first appeared in the Fall 1983 APX catalog. When APX folded in 1984, Furr took over and began direct sales from his home. Furr found these were being purchased by users' groups who would then give them out to the members. He nevertheless sold 25,000 copies between 1983 and 1993 directly, not including the additional sales through APX. The last copy was sold in 1993. Several years later, Furr was