Howdy all, Recently I've been working on a Silicon Labs C8051F132 and am trying to implement a simple averaging filter using it. Unfortunately the time the cpu takes making the necessary calculations seems excessive, and enabling the on-chip arithmetic gains me no performance improvement. I was wondering if perhaps something else had to be initialized for the MAC to work. I am using the Keil Compiler, uVision 3, and checking the box under the device settings, and see it add MDU_F120 to the Compiler control string. Unfortunately during the chip's operation from debug mode I can't witness the MAC doing anything. Thank you for any insight you can give me. As I am new to this line of micro, the compiler, and all this stuff in general heh, please let me know if you need some more information. Thanks!