From dff67638e9250d63816ee2010897421b3266e86d Mon Sep 17 00:00:00 2001
From: Ulf Wohlers <finsterr@users.sourceforge.net>
Date: Tue, 25 Feb 2003 13:29:35 +0000
Subject: [PATCH] INT 21/58 : UMB Link State not available

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@694
---
 src/dos/dos.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/dos/dos.cpp b/src/dos/dos.cpp
index de47fc6d..8c95b13a 100644
--- a/src/dos/dos.cpp
+++ b/src/dos/dos.cpp
@@ -691,6 +691,14 @@ static Bitu DOS_21Handler(void) {
 		case 1:		/* Set Strategy */
 			DOS_SetMemAllocStrategy(reg_bx);
 			break;
+		case 2:		/* Get UMB Link Status */
+			reg_ax=1; /* no UMB support */
+			CALLBACK_SCF(true);
+			break;
+		case 3:		/* Set UMB Link Status */
+			reg_ax=1; /* failure, no support */
+			CALLBACK_SCF(true);
+			break;
 		default:
 			LOG_DEBUG("DOS:58:Not Supported Set//Get memory allocation call %X",reg_al);
 		}