Hi ppl, I think I understand now. Everyone, thanks alot for helping me! :-) I hope all of you guys have a merry holidays! By the way, Olin, I have been looking over the macros you have written...ingenious! I will definitely be using them in the near future. The banking macros especially. XD ~Terry Chen On 12/22/05, Jan-Erik Soderholm wrote: > > Terry Chen wrote : > > Others have well enough replyed on saving > regs in general. I'd just like to comment on : > > > In the example in the PIC18 Reference, the manual only > > mention to save WREG/STATUS/BSR... > > Note that if you're running with *one* interrupt priority > level (quite normal, I think), *and* you are using > "RETFIE FAST", you don't have to worry about > WREG, STATUS and BSR, they are taken care of > automaticly with no overhead (time wise). > > > Regards, > Jan-Erik. > > > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist