[hbelusca] 64345: [NTVDM] - When writing to port 61h, reset the PIT 2 gate only when needed. - When the PIT 2 out signal is set, notify the speaker when there is really a change. - PC speaker: Do n...

Author: hbelusca
Date: Sat Sep 27 15:33:27 2014
New Revision: 64345

URL: http://svn.reactos.org/svn/reactos?rev=64345&view=rev
Log:
[NTVDM]
- When writing to port 61h, reset the PIT 2 gate only when needed.
- When the PIT 2 out signal is set, notify the speaker when there is really a change.
- PC speaker: Do not replay the same sound if it is the same.

Modified:
    trunk/reactos/subsystems/ntvdm/emulator.c
    trunk/reactos/subsystems/ntvdm/hardware/speaker.c

Modified: trunk/reactos/subsystems/ntvdm/emulator.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/ntvdm/emulator.…
==============================================================================
--- trunk/reactos/subsystems/ntvdm/emulator.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/ntvdm/emulator.c	[iso-8859-1] Sat Sep 27 15:33:27 2014
@@ -262,7 +262,7 @@
 
 static VOID WINAPI Port61hWrite(ULONG Port, BYTE Data)
 {
-    // BOOLEAN SpeakerChange = FALSE;
+    // BOOLEAN SpeakerStateChange = FALSE;
     BYTE OldPort61hState = Port61hState;
 
     /* Only the four lowest bytes can be written */
@@ -271,18 +271,17 @@
     if ((OldPort61hState ^ Port61hState) & 0x01)
     {
         DPRINT("PIT 2 Gate %s\n", Port61hState & 0x01 ? "on" :
"off");
-        // SpeakerChange = TRUE;
-    }
-
-    PitSetGate(2, !!(Port61hState & 0x01));
+        PitSetGate(2, !!(Port61hState & 0x01));
+        // SpeakerStateChange = TRUE;
+    }
 
     if ((OldPort61hState ^ Port61hState) & 0x02)
     {
         /* There were some change for the speaker... */
         DPRINT("Speaker %s\n", Port61hState & 0x02 ? "on" :
"off");
-        // SpeakerChange = TRUE;
-    }
-    // if (SpeakerChange) SpeakerChange();
+        // SpeakerStateChange = TRUE;
+    }
+    // if (SpeakerStateChange) SpeakerChange();
     SpeakerChange();
 }
 
@@ -316,7 +315,7 @@
 
 static VOID WINAPI PitChan2Out(LPVOID Param, BOOLEAN State)
 {
-    // BYTE OldPort61hState = Port61hState;
+    BYTE OldPort61hState = Port61hState;
 
 #if 0
     if (State)
@@ -332,9 +331,12 @@
 #else
     Port61hState = (Port61hState & 0xDF) | (State << 5);
 #endif
-    DPRINT("Speaker PIT out\n");
-    // if ((OldPort61hState ^ Port61hState) & 0x20)
-        // SpeakerChange();
+
+    if ((OldPort61hState ^ Port61hState) & 0x20)
+    {
+        DPRINT("PitChan2Out -- Port61hState changed\n");
+        SpeakerChange();
+    }
 }
 
 

Modified: trunk/reactos/subsystems/ntvdm/hardware/speaker.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/ntvdm/hardware/…
==============================================================================
--- trunk/reactos/subsystems/ntvdm/hardware/speaker.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/ntvdm/hardware/speaker.c	[iso-8859-1] Sat Sep 27 15:33:27
2014
@@ -29,6 +29,9 @@
 
 /* PRIVATE FUNCTIONS **********************************************************/
 
+static DWORD OldReloadValue = 0;
+static PIT_MODE OldMode = 0;
+
 /* PUBLIC FUNCTIONS ***********************************************************/
 
 VOID SpeakerChange(VOID)
@@ -47,9 +50,18 @@
         DWORD PitChannel2ReloadValue = PitChannel2->ReloadValue;
         if (PitChannel2ReloadValue == 0) PitChannel2ReloadValue = 65536;
 
+        DPRINT("(1) PitChannel2(Bcd = %s, Mode = %d ; ReloadValue = %d)\n",
PitChannel2->Bcd ? "true" : "false", PitChannel2->Mode,
PitChannel2ReloadValue);
+
+        if (OldMode == PitChannel2->Mode && OldReloadValue ==
PitChannel2ReloadValue)
+            return;
+
+        OldMode = PitChannel2->Mode;
+        OldReloadValue = PitChannel2ReloadValue;
+
+        DPRINT("(2) PitChannel2(Bcd = %s, Mode = %d ; ReloadValue = %d)\n",
PitChannel2->Bcd ? "true" : "false", PitChannel2->Mode,
PitChannel2ReloadValue);
+
         /* Set beep data */
-        BeepSetParameters.Frequency = (PIT_BASE_FREQUENCY / PitChannel2ReloadValue)
-                                          /* * (PitChannel2->Mode ==
PIT_MODE_SQUARE_WAVE ? 2 : 1) */;
+        BeepSetParameters.Frequency = (PIT_BASE_FREQUENCY / PitChannel2ReloadValue);
         BeepSetParameters.Duration  = INFINITE;
 
         /* Send the beep */
@@ -77,6 +89,9 @@
         NTSTATUS Status;
         IO_STATUS_BLOCK IoStatusBlock;
         BEEP_SET_PARAMETERS BeepSetParameters;
+
+        OldMode = 0;
+        OldReloadValue = 0;
 
         /* Set beep data */
         BeepSetParameters.Frequency = 0x00;