Description of this paper

Write a program to find the sum of the elements




1. Write a program to find the sum of the elements of an array called list1. The size of list1 is four bytes. The values of list1 are $FF, $1, $FE, and $02. To check your work, the sum should become $0200.;The requirements for writing this program are as follows.;-You must use a loop and count variable (i.e. count must be defined in the data section) as a loop counter.;- Clear both Registers A and B using CLRA and CLRB instructions.;-Use indexed addressing mode to access the elements of the array using Register X as the index register. The instruction LDX #list1 places the array list1 address into Register X.;-Add each element to Register B.;-Use the branch instruction BCC to check if there is a carry after the addition of each element. BCC means the Branch if Carry flag is clear.;-If there is a carry, add 1 to Register A.;-The final result should be in Register A and B.;A. Copy and paste the register window at the second iteration where the carry becomes set. Highlight the carry flag to show that it is set.;B. Copy and paste the register window to show the final result.


Paper#31527 | Written in 18-Jul-2015

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