find the largest element stored in the array

Mon May 13, 2013 11:58 pm

Code:: arr_max equ 0x00 i equ 0x01 n equ D'80' ; the array count #include <p18F8720.inc> org 0x00 goto start org 0x08 retfie org 0x18 retfie start movff 0x10,arr_max ; set arr[0] as the initial array max lfsr FSR0,0x11 ; place address of arr[1] in FSR0 clrf i,A ; initialize loop count i to 0 again movlw n-1 ; number of comparisons to be made ; the next instruction implements the condition C (i = n) cpfslt i,A ; skip if i < n-1 bra done ; all comparisons have been done ; the following 7 instructions update the array max movf POSTINC0,W cpfsgt arr_max,A ; is arr_max > arr[i]? bra replace ; no bra next_i ; yes replace movwf arr_max,A ; update the array max next_i incf i,F,A goto again done nop end