[NTVDM]

- Do not export (for the PIC/PIT/Speaker) the port functions but use instead the common port interface.
- In bios.c : IOWriteB(PIC_MASTER_DATA, PIC_ICW4_8086 /* | PIC_ICW4_AEOI */); (line 377) : in NXVM they add PIC_ICW4_AEOI; [TheFlash], can you have a look at this and see whether it is required for the master PIC only, otherwise remove this comment.

svn path=/branches/ntvdm/; revision=61590

subsystems/ntvdm/bios/bios.c

@@ -361,29 +361,30 @@ BOOLEAN BiosInitialize(HANDLE ConsoleInput, HANDLE ConsoleOutput)
      * The POST (Power On-Self Test)
      */
 
-    /* Initialize the PIC */
+    /* Initialize the master and the slave PICs */
     IOWriteB(PIC_MASTER_CMD, PIC_ICW1 | PIC_ICW1_ICW4);
     IOWriteB(PIC_SLAVE_CMD , PIC_ICW1 | PIC_ICW1_ICW4);
 
     /* Set the interrupt offsets */
     IOWriteB(PIC_MASTER_DATA, BIOS_PIC_MASTER_INT);
-    IOWriteB(PIC_SLAVE_DATA , BIOS_PIC_SLAVE_INT);
+    IOWriteB(PIC_SLAVE_DATA , BIOS_PIC_SLAVE_INT );
 
     /* Tell the master PIC there is a slave at IRQ 2 */
     IOWriteB(PIC_MASTER_DATA, 1 << 2);
     IOWriteB(PIC_SLAVE_DATA , 2);
 
-    /* Make sure the PIC is in 8086 mode */
+    /* Make sure both PICs are in 8086 mode */
-    IOWriteB(PIC_MASTER_DATA, PIC_ICW4_8086);
+    IOWriteB(PIC_MASTER_DATA, PIC_ICW4_8086 /* | PIC_ICW4_AEOI */);
     IOWriteB(PIC_SLAVE_DATA , PIC_ICW4_8086);
 
     /* Clear the masks for both PICs */
     IOWriteB(PIC_MASTER_DATA, 0x00);
     IOWriteB(PIC_SLAVE_DATA , 0x00);
 
-    PitWriteCommand(0x34);
+    /* Initialize the PIT */
-    PitWriteData(0, 0x00);
+    IOWriteB(PIT_COMMAND_PORT, 0x34);
-    PitWriteData(0, 0x00);
+    IOWriteB(PIT_DATA_PORT(0), 0x00);
+    IOWriteB(PIT_DATA_PORT(0), 0x00);
 
     return TRUE;
 }

subsystems/ntvdm/hardware/pic.h

@@ -16,20 +16,23 @@
 
 /* DEFINES ********************************************************************/
 
-#define PIC_MASTER_CMD 0x20
+#define PIC_MASTER_CMD  0x20
 #define PIC_MASTER_DATA 0x21
-#define PIC_SLAVE_CMD 0xA0
+#define PIC_SLAVE_CMD   0xA0
-#define PIC_SLAVE_DATA 0xA1
+#define PIC_SLAVE_DATA  0xA1
-#define PIC_ICW1 0x10
+
-#define PIC_ICW1_ICW4 (1 << 0)
+#define PIC_ICW1        0x10
+#define PIC_ICW1_ICW4   (1 << 0)
 #define PIC_ICW1_SINGLE (1 << 1)
-#define PIC_ICW4_8086 (1 << 0)
+#define PIC_ICW4_8086   (1 << 0)
-#define PIC_ICW4_AEOI (1 << 1)
+#define PIC_ICW4_AEOI   (1 << 1)
-#define PIC_OCW2_NUM_MASK 0x07
+
-#define PIC_OCW2_EOI (1 << 5)
+#define PIC_OCW2_NUM_MASK   0x07
-#define PIC_OCW2_SL (1 << 6)
+#define PIC_OCW2_EOI        (1 << 5)
-#define PIC_OCW3 (1 << 3)
+#define PIC_OCW2_SL         (1 << 6)
-#define PIC_OCW3_READ_ISR 0x0B
+
+#define PIC_OCW3            (1 << 3)
+#define PIC_OCW3_READ_ISR   0x0B
 
 typedef struct _PIC
 {
@@ -50,6 +53,7 @@ typedef struct _PIC
 
 VOID PicInterruptRequest(BYTE Number);
 BYTE PicGetInterrupt(VOID);
+
 VOID PicInitialize(VOID);
 
 #endif // _PIC_H_

subsystems/ntvdm/hardware/ps2.h

@@ -25,6 +25,7 @@
 /* FUNCTIONS ******************************************************************/
 
 VOID GenerateKeyboardInterrupts(VOID);
+
 BOOLEAN PS2Initialize(HANDLE ConsoleInput);
 VOID PS2Cleanup(VOID);
 

subsystems/ntvdm/hardware/speaker.c

@@ -28,14 +28,14 @@
 static BYTE Port61hState = 0x00;
 HANDLE hBeep = NULL;
 
-/* PUBLIC FUNCTIONS ***********************************************************/
+/* PRIVATE FUNCTIONS **********************************************************/
 
-BYTE SpeakerReadStatus(VOID)
+static BYTE SpeakerReadStatus(VOID)
 {
     return Port61hState;
 }
 
-VOID SpeakerWriteCommand(BYTE Value)
+static VOID SpeakerWriteCommand(BYTE Value)
 {
     BOOLEAN IsConnectedToPITChannel2;
     UCHAR   SpeakerData;
@@ -121,16 +121,18 @@ VOID SpeakerWriteCommand(BYTE Value)
     }
 }
 
-BYTE WINAPI SpeakerReadPort(ULONG Port)
+static BYTE WINAPI SpeakerReadPort(ULONG Port)
 {
     return SpeakerReadStatus();
 }
 
-VOID WINAPI SpeakerWritePort(ULONG Port, BYTE Data)
+static VOID WINAPI SpeakerWritePort(ULONG Port, BYTE Data)
 {
     SpeakerWriteCommand(Data);
 }
 
+/* PUBLIC FUNCTIONS ***********************************************************/
+
 VOID SpeakerInitialize(VOID)
 {
     NTSTATUS Status;

subsystems/ntvdm/hardware/speaker.h

@@ -21,8 +21,6 @@
 
 VOID SpeakerInitialize(VOID);
 VOID SpeakerCleanup(VOID);
-BYTE SpeakerReadStatus(VOID);
-VOID SpeakerWriteCommand(BYTE Value);
 
 #endif // _SPEAKER_H_
 

subsystems/ntvdm/hardware/timer.c

@@ -20,9 +20,9 @@
 static PIT_CHANNEL PitChannels[PIT_CHANNELS];
 PPIT_CHANNEL PitChannel2 = &PitChannels[2];
 
-/* PUBLIC FUNCTIONS ***********************************************************/
+/* PRIVATE FUNCTIONS **********************************************************/
 
-VOID PitWriteCommand(BYTE Value)
+static VOID PitWriteCommand(BYTE Value)
 {
     BYTE Channel = Value >> 6;
     BYTE Mode = (Value >> 1) & 0x07;
@@ -69,7 +69,7 @@ VOID PitWriteCommand(BYTE Value)
     }
 }
 
-BYTE PitReadData(BYTE Channel)
+static BYTE PitReadData(BYTE Channel)
 {
     WORD CurrentValue = PitChannels[Channel].CurrentValue;
     BYTE AccessMode = PitChannels[Channel].AccessMode;
@@ -119,7 +119,7 @@ BYTE PitReadData(BYTE Channel)
     return 0;
 }
 
-VOID PitWriteData(BYTE Channel, BYTE Value)
+static VOID PitWriteData(BYTE Channel, BYTE Value)
 {
     BYTE AccessMode = PitChannels[Channel].AccessMode;
 
@@ -184,6 +184,8 @@ static VOID WINAPI PitWritePort(ULONG Port, BYTE Data)
     }
 }
 
+/* PUBLIC FUNCTIONS ***********************************************************/
+
 VOID PitDecrementCount(DWORD Count)
 {
     INT i;

subsystems/ntvdm/hardware/timer.h

@@ -47,11 +47,9 @@ extern PPIT_CHANNEL PitChannel2;    // Needed for PC Speaker
 
 /* FUNCTIONS ******************************************************************/
 
-VOID PitWriteCommand(BYTE Value);
-VOID PitWriteData(BYTE Channel, BYTE Value);
-
 VOID PitDecrementCount(DWORD Count);
 DWORD PitGetResolution(VOID);
+
 VOID PitInitialize(VOID);
 
 #endif // _TIMER_H_