> An occasionally forgotten feature is that ALU operations also have a S-bit to > indicate whether they should update the flags based on the result, or leave > them alone.
Power ISA also has this feature (the so-called "dot" instructions). It also has special forms of instructions for setting the overflow and carry flags, when appropriate. -- ------------------------------------ personal: http://www.cameronkaiser.com/ -- Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckai...@floodgap.com -- "Garbage in -- gospel out" -------------------------------------------------
