Feeling a little "Blue"...

        While the public awaited the arrival of the "Next Generation" computers from Atari, rumors leaked about a computer from Atari, one that was very different from anything Atari had done in the past.    A computer that was {gasp} IBM PC Compatible of all things.   The rumors were in fact quite true.   Atari's Advanced Engineering was working initially on its own, then in the summer of 1983, began talk of a joint project with Toshiba to build not just a PC Compatible system, but a dual processor system that in one mode would run as an Atari 8bit XL computer and in another mode, would run as an IBM PC compatible (well - semi-compatible).  

    It would have both a 6502 and a 80816 CPU on the motherboard.   Would have all of the Atari custom IC chips, but would share memory, I/O and video.    The system was called the Atari 1600XL (Internally the project was codenamed "Shatki", it was also called the Atari 25601.