From 0db8c2700ffafc66191a153a989c03c933b4d6b9 Mon Sep 17 00:00:00 2001
From: Ulf Wohlers <finsterr@users.sourceforge.net>
Date: Thu, 5 Dec 2002 15:58:01 +0000
Subject: [PATCH] Define mouse cursor range : detect and handle 'wrong'
 parameters

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@561
---
 src/ints/mouse.cpp | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/src/ints/mouse.cpp b/src/ints/mouse.cpp
index 77556157..912bd469 100644
--- a/src/ints/mouse.cpp
+++ b/src/ints/mouse.cpp
@@ -449,12 +449,22 @@ static Bitu INT33_Handler(void) {
 			break;
 		}
 	case 0x07:	/* Define horizontal cursor range */
-		mouse.min_x=reg_cx;
-		mouse.max_x=reg_dx;
+		if (reg_cx<reg_dx) {
+			mouse.min_x=reg_cx;
+			mouse.max_x=reg_dx;
+		} else {
+			mouse.min_x=reg_dx;
+			mouse.max_x=reg_cx;
+		};
 		break;
 	case 0x08:	/* Define vertical cursor range */
-		mouse.min_y=reg_cx;
-		mouse.max_y=reg_dx;
+		if (reg_cx<reg_dx) {
+			mouse.min_y=reg_cx;
+			mouse.max_y=reg_dx;
+		} else {
+			mouse.min_y=reg_dx;
+			mouse.max_y=reg_cx;
+		};
 		break;
 	case 0x09:	/* Define GFX Cursor */
 		{