From 53fbdf6bc9d699b0f7a44d287507f9d02ccfef44 Mon Sep 17 00:00:00 2001
From: Aleksandar Andrejevic <aandrejevic@reactos.org>
Date: Tue, 25 Jun 2013 17:56:05 +0000
Subject: [PATCH] [NTVDM] Implement the "Get Interrupt Vector" and "Set
 Interrupt Vector" DOS API functions.

svn path=/branches/ntvdm/; revision=59340
---
 subsystems/ntvdm/dos.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/subsystems/ntvdm/dos.c b/subsystems/ntvdm/dos.c
index 4bd4652dd28..5f91e79de22 100644
--- a/subsystems/ntvdm/dos.c
+++ b/subsystems/ntvdm/dos.c
@@ -635,6 +635,17 @@ VOID DosInt21h(WORD CodeSegment)
             break;
         }
 
+        /* Set Interrupt Vector */
+        case 0x25:
+        {
+            DWORD FarPointer = MAKELONG(LOWORD(Edx), DataSegment);
+
+            /* Write the new far pointer to the IDT */
+            ((PDWORD)BaseAddress)[LOBYTE(Eax)] = FarPointer;
+
+            break;
+        }
+
         /* Get system date */
         case 0x2A:
         {
@@ -710,6 +721,18 @@ VOID DosInt21h(WORD CodeSegment)
             break;
         }
 
+        /* Get Interrupt Vector */
+        case 0x35:
+        {
+            DWORD FarPointer = ((PDWORD)BaseAddress)[LOBYTE(Eax)];
+
+            /* Read the address from the IDT into ES:BX */
+            EmulatorSetRegister(EMULATOR_REG_ES, HIWORD(FarPointer));
+            EmulatorSetRegister(EMULATOR_REG_BX, LOWORD(FarPointer));
+
+            break;
+        }
+
         /* Create Directory */
         case 0x39:
         {