Le samedi 15 Avril 2006 17:27, Lourens Veen a écrit : > Newer processors can simply have more > functional units, and could be backwards compatible with their > predecessors.
One of the backside of MISC is that you can't be backwards compatible. You needs more space to define new register. You need to define different latency. Basicaly the instruction world look like a 2 registers, one read, one write. You could add a bit to the input register for immediat numbers. If you use 64 registers, it take 6 bits. Then a single move use 12 bits + 1 bits at least. But you could be vliw, and do n move at a time, 128 bits instruction word could integrate 10 MOVE instructions. GPU don't need to be backwards compatible like CPU. MISC instructions could be used to really have the best performance by hiding latency. _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
