; ID: Joseph Wyatt / CIS 253 / Fall, 2002
; PURPOSE: Demonstrate use of Irvine library functions
; DESIGN: 	Clear screen
; 		Move cursor & Prompt user
; 		Get number
; 		Move Cursor and put out message
; 		Experiment with access outside data area
;========================================================
TITLE Chapter 5 Exercise Example
INCLUDE Irvine32.inc
.data
	begin = $
	number SDWORD ?
	prompt1 BYTE "Hello! - What number? ",0
	answer BYTE " is great number!", 0
	ending = $

.code
main PROC
	; Clear the screen
	call ClrScr

	; Move the cursor
	mov dh,5 ; row
	mov dl,20 ; column
	call Gotoxy ; put cursor there

	; Prompt user for a number
	mov edx,OFFSET prompt1
	call WriteString ; display prompt (up to trailing zero)

	; Get the number from the user
	call ReadInt
	mov number, eax ; number entered stored in eax
	
	; Move the cursor
	mov dh,14
	mov dl,20
	call Gotoxy

	; Write final message
	mov eax, number ; put number to display in eax
	call WriteInt ; write number
	mov edx,OFFSET answer ; write text
	call WriteString
	call Crlf
	call Crlf

	; Experiment - can we access beyond data area?
	call Readint
	mov eax,[begin-4] ; ??
	call DumpRegs
	mov eax,[ending+4] ; ??
	call DumpRegs
	exit 	1
main ENDP
END main