Final changes and tweaks before submission

stage2/bootasm2.S

@@ -38,53 +38,7 @@ cons_writeline:
     call    cons_write_crlf
     ret    
 
-# Added Write Hex and Int functions to help with debugging
-HexChars:	.ascii "0123456789ABCDEF"
-
-cons_write_hex:
-	movw	$4, %cx
-    movb    $0x0E, %ah
-	
-hexloop:
-    rol     $4, %bx
-    movw    %bx, %si
-    and     $0x000F, %si
-    movb    HexChars(%si), %al
-	int		$0x10
-	loop	hexloop
-	ret
-
-cons_write_int:
-    movw    $IntBuffer + 4, %si
-    movw    %bx, %ax
-
-    cmpw    $0, %ax
-    jge     getdigit
-
-    xor     %ax, %ax    # Added to handle signed numbers, it adds the minus and then neg's the number
-    movb    $0x0E, %ah
-    movb    $0x2D, %al
-	int		$0x10
-
-    movw    %bx, %ax
-    negw    %ax
-	
-getdigit:
-	xor		%dx, %dx
-	movw	$10, %cx
-	idiv	%cx
-	addb	$48, %dl
-	movb	%dl, (%si)
-	dec		%si
-	cmp		$0, %ax
-	jne		getdigit
-	inc		%si
-	call	cons_write
-	ret
-	
-IntBuffer:   .string "     "
-
-# Draw Line function DrawLine(x0 (4), y0 (6), x1 (8), y1 (10), color (12))
+# Draw Line function DrawLine(int x0 (4), int y0 (6), int x1 (8), int y1 (10), short color (12))
 # Define parameter address positions in stack
 #define color   12
 #define y1      10
@@ -275,6 +229,43 @@ draw_start:
     pushw   $180     # x0
     call    cons_draw_line
 
+    #---------------------------
+
+    pushw   $13      # Color
+    pushw   $160     # y1
+    pushw   $30     # x1
+    pushw   $160      # y0
+    pushw   $20     # x0
+    call    cons_draw_line
+
+    pushw   $13      # Color
+    pushw   $170     # y1
+    pushw   $30      # x1
+    pushw   $160     # y0
+    pushw   $30     # x0
+    call    cons_draw_line
+
+    pushw   $13      # Color
+    pushw   $170     # y1
+    pushw   $30      # x1
+    pushw   $170     # y0
+    pushw   $20      # x0
+    call    cons_draw_line
+
+    pushw   $13       # Color
+    pushw   $180     # y1
+    pushw   $20     # x1
+    pushw   $170     # y0
+    pushw   $20      # x0
+    call    cons_draw_line
+
+    pushw   $13       # Color
+    pushw   $180     # y1
+    pushw   $30     # x1
+    pushw   $180      # y0
+    pushw   $20     # x0
+    call    cons_draw_line
+
 endless_loop:                   # Loop forever more
     jmp     endless_loop