From 72f854472370bee22337aba6bbdbfe0937b7c057 Mon Sep 17 00:00:00 2001
From: Sjoerd van der Berg <harekiet@users.sourceforge.net>
Date: Mon, 19 Nov 2018 18:34:49 +0000
Subject: [PATCH] Make autoinit exit work and prevent double single cycle
 transfers when quitting autoinit

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@4174
---
 src/hardware/sblaster.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/hardware/sblaster.cpp b/src/hardware/sblaster.cpp
index 9058df08..4b68d63f 100644
--- a/src/hardware/sblaster.cpp
+++ b/src/hardware/sblaster.cpp
@@ -537,6 +537,8 @@ static void GenerateDMASound(Bitu size) {
 				sb.dma.mode = DSP_DMA_NONE;
 			}
 			else {
+				//Copied this value as the count for the final single cycle
+				sb.dma.total = 0;
 				LOG(LOG_SB, LOG_NORMAL)("Switch to Single cycle transfer begun");
 			}
 		} else {
@@ -996,6 +998,8 @@ static void DSP_DoCommand(void) {
 		DSP_SB2_ABOVE;
 		/* Set mode to single transfer so it ends with current block */
 		sb.dma.autoinit=false;		//Should stop itself
+		sb.dma.total = 0;			//This will cancel the switch to single cycle mode
+		//Should really have some sb.dma.autoexit variable since we don't support continue autoinit dsp commands
 		break;
 	case 0xe0:	/* DSP Identification - SB2.0+ */
 		DSP_FlushData();