--- uae/src/sd-uss/sound.c	2018/04/24 16:42:46	1.1.1.2
+++ uae/src/sd-uss/sound.c	2018/04/24 17:15:09	1.1.1.8
@@ -1,8 +1,8 @@
- /* 
+ /*
   * UAE - The Un*x Amiga Emulator
-  * 
+  *
   * Support for Linux/USS sound
-  * 
+  *
   * Copyright 1997 Bernd Schmidt
   */
 
@@ -12,6 +12,7 @@
 #include "config.h"
 #include "options.h"
 #include "memory.h"
+#include "events.h"
 #include "custom.h"
 #include "gensound.h"
 #include "sounddep/sound.h"
@@ -27,7 +28,7 @@
 #endif
 
 int sound_fd;
-static int have_sound;
+static int have_sound = 0;
 static unsigned long formats;
 
 uae_u16 sndbuffer[44100];
@@ -48,21 +49,31 @@ void close_sound (void)
 	close (sound_fd);
 }
 
+/* Try to determine whether sound is available.  This is only for GUI purposes.  */
 int setup_sound (void)
 {
     sound_fd = open ("/dev/dsp", O_WRONLY);
-    have_sound = !(sound_fd < 0);
-    if (! have_sound)
+
+    sound_available = 0;
+
+    if (sound_fd < 0) {
+	perror ("Can't open /dev/dsp");
+	if (errno == EBUSY) {
+	    /* We can hope, can't we ;) */
+	    sound_available = 1;
+	    return 1;
+	}
 	return 0;
+    }
 
     if (ioctl (sound_fd, SNDCTL_DSP_GETFMTS, &formats) == -1) {
-	fprintf (stderr, "ioctl failed - can't use sound.\n");
-	close(sound_fd);
-	have_sound = 0;
+	perror ("ioctl failed - can't use sound");
+	close (sound_fd);
 	return 0;
     }
 
     sound_available = 1;
+    close (sound_fd);
     return 1;
 }
 
@@ -72,6 +83,21 @@ int init_sound (void)
     int rate;
     int dspbits;
 
+    sound_fd = open ("/dev/dsp", O_WRONLY);
+    have_sound = !(sound_fd < 0);
+    if (! have_sound) {
+	perror ("Can't open /dev/dsp");
+	if (errno != EBUSY)
+	    sound_available = 0;
+	return 0;
+    }
+    if (ioctl (sound_fd, SNDCTL_DSP_GETFMTS, &formats) == -1) {
+	perror ("ioctl failed - can't use sound");
+	close (sound_fd);
+	have_sound = 0;
+	return 0;
+    }
+
     if (currprefs.sound_maxbsiz < 128 || currprefs.sound_maxbsiz > 16384) {
 	fprintf (stderr, "Sound buffer size %d out of range.\n", currprefs.sound_maxbsiz);
 	currprefs.sound_maxbsiz = 8192;
@@ -89,7 +115,7 @@ int init_sound (void)
 	return 0;
     }
 
-    tmp = currprefs.stereo;
+    tmp = currprefs.sound_stereo;
     ioctl (sound_fd, SNDCTL_DSP_STEREO, &tmp);
 
     rate = currprefs.sound_freq;
@@ -101,28 +127,25 @@ int init_sound (void)
 	return 0;
     }
 
-    sample_evtime = (long)maxhpos * maxvpos * 50 / rate;
+    scaled_sample_evtime = (unsigned long)MAXHPOS_PAL * MAXVPOS_PAL * VBLANK_HZ_PAL * CYCLE_UNIT / rate;
+    scaled_sample_evtime_ok = 1;
 
     if (dspbits == 16) {
 	/* Will this break horribly on bigendian machines? Possible... */
 	if (!(formats & AFMT_S16_LE))
 	    return 0;
 	init_sound_table16 ();
-	sample_handler = currprefs.stereo ? sample16s_handler : sample16_handler;
+	sample_handler = currprefs.sound_stereo ? sample16s_handler : sample16_handler;
     } else {
 	if (!(formats & AFMT_U8))
 	    return 0;
 	init_sound_table8 ();
-	sample_handler = currprefs.stereo ? sample8s_handler : sample8_handler;
+	sample_handler = currprefs.sound_stereo ? sample8s_handler : sample8_handler;
     }
     sound_available = 1;
     printf ("Sound driver found and configured for %d bits at %d Hz, buffer is %d bytes\n",
 	    dspbits, rate, sndbufsize);
     sndbufpt = sndbuffer;
-    
-#ifdef FRAME_RATE_HACK
-    vsynctime = vsynctime * 9 / 10;
-#endif	
 
     return 1;
 }