From 364257e1cc8b9290dc790b89b2f4a921887eb780 Mon Sep 17 00:00:00 2001
From: Ralf Grillenberger <h-a-l-9000@users.sourceforge.net>
Date: Wed, 11 Nov 2009 18:56:45 +0000
Subject: [PATCH] Initially keep the serial port interrupt down. Fixes Kingdom
 O' Magic soundcard detection.

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3499
---
 src/hardware/serialport/serialport.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/hardware/serialport/serialport.cpp b/src/hardware/serialport/serialport.cpp
index 16fe4a8d..b6a310ac 100644
--- a/src/hardware/serialport/serialport.cpp
+++ b/src/hardware/serialport/serialport.cpp
@@ -1065,6 +1065,7 @@ void CSerial::Init_Registers () {
 	Write_LCR (lcrresult);
 	updateMSR();
 	Read_MSR();
+	PIC_DeActivateIRQ(irq);
 }
 
 CSerial::CSerial(Bitu id, CommandLine* cmd) {