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This was the last classic Amiga compatible chipset that Commodore announced in 1992. They planned to release it in 1994 for low end Amiga computers along with AAA. ==History== In 1991 Commodore realized that AAA cost was going high, so they postponed it until 1994 and hesitantly designed AGA and released it in 1992 to keep up with the competitors. Commodore was convinced that even in 1994 AAA systems with their 4 custom chips (6 chips in the 64-bit systems) would be very expensive to use in a low price A1200 like computer or CD32 like console. So unlike Commodore's habit of designing one custom chip for both high end and low end computers to save development costs, Commodore decided to design two custom chips: AAA for the high end computers and AA+ for the low end ones. In January 1993 at Devcon in Orlando, Florida, Lew Eggebrecht Commodore VP of Engineering at the time stated the following: "AA+ will be a more profitable version of AA with all the things we wished we'd got in but didn't have time. We have a list of all the problems we currently have at the low end. The serial port, we can't read high density floppies, there isn't enough band width to do 72 Hz screens plus there are no chunky pixel modes for rendering. We listed all those and said, "OK let's go out and fix them as quickly as we can", so AA+ is an extension, not radically new architecture. We're doing the best that we can, taking advantage of advances in technology, significantly reducing the cost and that's the goal." According to Dave Haynie AA+ only existed on papers and the actual design never started due to Commodore's lack of money at the time. Like AAA and Hombre, Commodore was planning to use AA+ with the Acutiator system that Dave Haynie designed. A few years later Access Innovations adopted the AA+ name for its BoXeR AGA compatible chipset. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Commodore AA+ Chipset」の詳細全文を読む スポンサード リンク
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