From 13ea835d96f6b8ad2bc333b181121c2660f56526 Mon Sep 17 00:00:00 2001
From: Ralf Grillenberger <h-a-l-9000@users.sourceforge.net>
Date: Sun, 4 Apr 2010 12:29:25 +0000
Subject: [PATCH] Keep the timer value during timer mode changes (undocumented
 behavior). Fixes Dunkle Schatten with Soundblaster and 3DMania.

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3567
---
 src/hardware/timer.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/hardware/timer.cpp b/src/hardware/timer.cpp
index a4a7c503..8ceb42d5 100644
--- a/src/hardware/timer.cpp
+++ b/src/hardware/timer.cpp
@@ -139,6 +139,7 @@ static void counter_latch(Bitu counter) {
 
 	//If gate2 is disabled don't update the read_latch
 	if(counter == 2 && !gate2 && p->mode !=1) return;
+	if(p->new_mode) return;
 
 	double index=PIC_FullIndex()-p->start;
 	switch (p->mode) {
@@ -309,6 +310,7 @@ static void write_p43(Bitu /*port*/,Bitu val,Bitu /*iolen*/) {
 				pit[latch].counterstatus_set=false;
 				latched_timerstatus_locked=false;
 			}
+			pit[latch].go_read_latch = true;
 			pit[latch].update_count = false;
 			pit[latch].counting = false;
 			pit[latch].read_state  = (val >> 4) & 0x03;