Homework # 8  Due by prior to your lab session on Thursday, October 5th.


Write a recursive factoral routine in our assembly language.  Follow the
stipulations in this week's lab.  You should:


	1) comment your code
	2) start your calling routine at $2000
	3) call your subroutine FCTRL, and start it at $3000 
		so that I can JSR to it (I plan to invoke it using:

		JSR FCTRL

	4) your subroutine should take the argument in the A accumulator,
		and return its result on the stack
	5) It needs to be an honest recursive subroutine, no fair taking
		advantage of our small word size and looping to get the
		answer
	6) End your calling program in an infinite loop so that I don't
		run off the end while grading,
	7) Set your stack pointer to $7FFF (you'll need stack space!)
	8) Your subroutine needs to "do all the work".  I will stick a
		number in acc A, and JSR FCTRL.  I'm not going to set up
		any other stuff first.  You should allow my calling program
		to use all of the space between $2000 and $2FFF (no, I won't
		use most of it, but it is reserved for ME!)
	9) Your subroutine should be fairly well behaved, saving the 
		contents of all user registers except Acc A and the CCR.
	10) After testing and debugging, name your program XXXhw08.ASM
		(where XXX are your 3 initials) and mail the .asm file to:

		ee347Lsdsu@gmail.com

	11) Do this before your lab session on Thursday.