Tuesday, September 30, 2008
Xenon Processor Continued
Miscellaneous Xenon Hardware Notes
Some additional notes:
•Xenon is a big-endian system. Both the CPU and GPU process memory in big-endian mode. Games ported from little-endian systems such as the Xbox or PC need to account for this in their game asset pipeline.
•Tapping into the power of the CPU is a daunting task. Writing multithreaded game engines is not trivial. Xenon system software is designed to take advantage of this processing power wherever possible. The Xbox Advanced Technology Group (ATG) is also exploring a variety of techniques for offloading graphics work to the CPU.
•People often ask if Xenon can be backward compatible with Xbox. Although the architecture of the two consoles is quite different, Xenon has the processing power to emulate Xbox. Whether Xenon will be backward compatible involves a variety of factors, not the least of which is the massive development and testing effort required to allow Xbox games run on Xenon.
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