From d497b99734ffcea678a009db8381fdb12a02bb37 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Herm=C3=A8s=20B=C3=A9lusca-Ma=C3=AFto?=
 <hermes.belusca-maito@reactos.org>
Date: Fri, 9 Aug 2013 13:06:01 +0000
Subject: [PATCH] [NTVDM] Implement INT 10h, function 04h (Query Light Pen)
 (deprecated)

svn path=/branches/ntvdm/; revision=59677
---
 subsystems/ntvdm/bios.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/subsystems/ntvdm/bios.c b/subsystems/ntvdm/bios.c
index c23803f790a..e37fc08c11b 100644
--- a/subsystems/ntvdm/bios.c
+++ b/subsystems/ntvdm/bios.c
@@ -667,6 +667,17 @@ VOID BiosVideoService(LPWORD Stack)
             break;
         }
 
+        /* Query Light Pen */
+        case 0x04:
+        {
+            /*
+             * On modern BIOSes, this function returns 0
+             * so that we can ignore the other registers.
+             */
+            EmulatorSetRegister(EMULATOR_REG_AX, 0);
+            break;
+        }
+
         /* Select Active Display Page */
         case 0x05:
         {