Write an assembly language program that circularly shifts rightward a value in memory a certain number of times.  The number of times to shift should also be stored in memory. 

Example: Suppose one memory location holds the value (0101100101110110)₂ and another holds the number of times to shift (5).  Then, at the end of the program, the value stored in memory should be (1011001011001011)₂.  You will need to convert the number of times to shift (5) to a negative number (-5) so that you can run a loop 5 times (loop stops on zero).  If instead 3 times, convert to -3, etc.

Requirements:

• Organize your program into 3 columns as per the book/online lecture: labels, instructions, comments.  For example:

	ORG 2A	/Program starts at address 2A
	LDA X1	/Load X1 to AC
	ADD X2 I	/Add value at address in X2 to AC
	STA X3	/Store sum at X3
X1,	DEC 100	/First value to add
X2,	HEX 2F	/Location of 2nd value to add
X3,	DEC -1	/Second value to add, result
	END	/End of program

• Use labels for any data in memory or locations used for branching.
• Add a descriptive comment (/) to the right of each instruction.
• Write a complete program with ORG and END pseudoinstructions as well as a HLT.
• Symbol table: Include the address symbol table (example: p. 183 in text, also in Programming Online Lecture) that would be produced by a first pass of the assembler through your program.  Recall the symbol table maps labels to addresses–ORG is highly relevant.
• Format: Submit the program and symbol table in a single Word (.docx) [also exportable from Google Docs], PDF, or plain text file.  The 3 program columns should line up (you may wish to use a word-processor table feature).
• Bonus: Write a subroutine in the program that somehow helps accomplish the task.

Upload a single document containing your entire program.  Note that since you cannot run the program, you must be able to trace each step to verify it works.

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