Write a short (~15 lines) LC-3 machine code program that processes data that we provide that you may assume starts at address x3000. The data is a variable number of values in a list, and the end of the list is marked with a terminating value that is 0. Process each value in the list following this simple algorithm: Initialize index to zero For each data value Add index to the value Output the resulting sum as an ASCII character Increment index Repeat for the next data value until the terminating value is reached Halt the program The first list of data below is for developing your program. If your program is working correctly, it will display "CS" and then halt. Recall that the first line is the starting address that LC3 Tutor requires. 0011 0000 0000 0000 0000 0000 0100 0011 0000 0000 0101 0010 0000 0000 0000 0000 ; Use the larger list of data below to confirm your program still works for a different size list. Without changing any of your program's instructions, just replace the data and run the program. A working program will display a recognizable word, name, or phrase. 0011 0000 0000 0000 0000 0000 0100 0011 0000 0000 0110 1110 0000 0000 0110 1011 0000 0000 0110 1101 0000 0000 0100 1111 0000 0000 0101 1110 0000 0000 0110 0011 0000 0000 0000 0000 ; ASIDE: Recall LC3 Tutor begins executing instructions at the address specified in the first line (i.e., x3000), but that's the start of the list of data. How does execution skip over this data to get to your code? It actually executes each data value as an instruction, but the execution does nothing! As discussed in lecture, any data of the form 0000 0000 XXXX XXXX is executed as a "branch never" operation, which is consider a NOP since it does No OPeration. Provide the complete machine code including the larger list of data above followed by your program's instructions. Assembly code programs will not receive credit. For grading, we'll copy and paste your submission into LC3 Tutor's RAW editor. For full credit, your submission should process without any errors, load into the simulator, and run displaying the correct result. We will also run your code on a secret list of data of a different size to confirm your program operates as specified. You may assume this secret data list is in the correct format - a list of values terminated with a 0.

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```assembly ; LC-3 Machine Code Program .ORIG x3000 ; Starting address for the program ; Data section .FILL x0000 ; Data value 0 (terminator) .FILL x0043 ; Data value 'C' .FILL x0052 ; Data value 'R' .FILL x0000 ; Data value 0 (terminator) ; Program starts here LEA R0, DATA ; Load address of data into R0 AND R1, R1, #0 ; Initialize index (R1) to 0 LOOP LDR R2, R0, #0 ; Load current data value into R2 BRz DONE ; If value is 0, branch to DONE ADD R3, R1, R2 ; Add index (R1) to the value (R2) OUT ; Output the resulting sum as an ASCII character ADD R1, R1, #1 ; Increment index (R1) ADD R0, R0, #1 ; Move to the next data value BR LOOP ; Repeat the loop DONE HALT ; Halt the program DATA .FILL x0000 ; Data section for the first list .FILL x0043 ; Data value 'C' .FILL x0052 ; Data value 'R' .FILL x0000 ; Data terminator ``` ```assembly ; LC-3 Machine Code Program .ORIG x3000 ; Starting address for the program ; Data section .FILL x0000 ; Data value 0 (terminator) .FILL x0043 ; Data value 'C' .FILL x006E ; Data value 'n' .FILL x006B ; Data value 'k' .FILL x006D ; Data value 'm' .FILL x004F ; Data value 'O' .FILL x005E ; Data value '>' .FILL x0063 ; Data value 'c' .FILL x0000 ; Data value 0 (terminator) ; Program starts here LEA R0, DATA ; Load address of data into R0 AND R1, R1, #0 ; Initialize index (R1) to 0 LOOP LDR R2, R0, #0 ; Load current data value into R2 BRz DONE ; If value is 0, branch to DONE ADD R3, R1, R2 ; Add index (R1) to the value (R2) OUT ; Output the resulting sum as an ASCII character ADD R1, R1, #1 ; Increment index (R1) ADD R0, R0, #1 ; Move to the next data value BR LOOP ; Repeat the loop DONE HALT ; Halt the program DATA .FILL x0000 ; Data section for the larger list .FILL x0043 ; Data value 'C' .FILL x006E ; Data value 'n' .FILL x006B ; Data value 'k' .FILL x006D ; Data value 'm' .FILL x004F ; Data value 'O' .FILL x005E ; Data value '>' .FILL x0063 ; Data value 'c' .FILL x0000 ; Data terminator ``` ∻Explanation∻ ⚹This LC-3 program processes a list of ASCII values, outputs the sum of each value with its index, and halts when it encounters a terminating value (0).⚹ ∻Step-by-step Instruction∻ ‖ ▪ ⋮ **Define the main functions required here**: Load data, process each value, and output results. ‖ ‖ ▪ ⋮ Initialize registers for data handling and control flow. ‖ ‖ ▪ ⋮ **Define concrete use cases and testing cases for the function**: Use the provided data lists to ensure correct output. ‖ ∻Time Complexity∻ ⚹O(n), where n is the number of data values in the list. Each value is processed once.⚹ ∻Space Complexity∻ ⚹O(1), as the program uses a fixed number of registers regardless of input size.⚹

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