Worksheet4-2.txt

TITLE worksheet 4

; Description: Solution for worksheet 4 number 2
; Author: Amanda Steidl
; Date: Oct. 6, 2014

INCLUDE Irvine32.inc
; This directive imports various macros and ASM procedures (functions)
; that are in the Irvine library. 

.data
	word_ints	WORD 523Bh, 0A419h, 26h, 9E5h, 87ECh, 410Fh, 396h
	big_end		BYTE LENGTHOF word_ints DUP(?)				
.code

main proc

	MOV EDX, OFFSET big_end		;moves address of big_end into EDX

	MOV ECX, LENGTHOF big_end	;moves length of big_end into ECX
	MOV ESI, 0					;moves 0 into ESI for walking through word_ints

	toBigEnd:
		MOV AL, BYTE PTR [word_ints + ESI]						;AL will contain the value of word_int as a BYTE .. [i.e. 1st: 3B]
		MOV [big_end + (ESI + TYPE big_end)], AL				;the value in AL will be moved into the second place in big_end [i.e. 003B]
		MOV AL, BYTE PTR [word_ints + (ESI + TYPE big_end)]		;AL will contain the second value of word_int as a BYTE .. [i.e. 2nd: 52]
		MOV [big_end + ESI], AL									;move that value into big_end [i.e. 523B]
		ADD ESI, (TYPE word_ints)								;add two to ESI (instead of increasing it twice)
	LOOP toBigEnd


	exit

main endp

end main