[hbelusca] 62282: [NTVDM] Start to implement EmulatorSimulate / EmulatorUnsimulate (used by VDDSimulate16 and VDDUnsimualte16). This piece of code can be better written, but it works for what I'm g...

Author: hbelusca
Date: Fri Feb 21 19:27:27 2014
New Revision: 62282

URL: http://svn.reactos.org/svn/reactos?rev=62282&view=rev
Log:
[NTVDM]
Start to implement EmulatorSimulate / EmulatorUnsimulate (used by VDDSimulate16 and VDDUnsimualte16). This piece of code can be better written, but it works for what I'm going to commit next.

Modified:
    branches/ntvdm/subsystems/ntvdm/clock.c
    branches/ntvdm/subsystems/ntvdm/emulator.c
    branches/ntvdm/subsystems/ntvdm/emulator.h
    branches/ntvdm/subsystems/ntvdm/ntvdm.c

Modified: branches/ntvdm/subsystems/ntvdm/clock.c
URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/clock.c?r...
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/clock.c	[iso-8859-1] (original)
+++ branches/ntvdm/subsystems/ntvdm/clock.c	[iso-8859-1] Fri Feb 21 19:27:27 2014
@@ -127,7 +127,6 @@
     VgaHorizontalRetrace();

/* Continue CPU emulation */
-    // EmulatorSimulate();
     for (i = 0; (i < STEPS_PER_CYCLE) && VdmRunning; i++)
     {
         EmulatorStep();

Modified: branches/ntvdm/subsystems/ntvdm/emulator.c
URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/emulator....
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/emulator.c	[iso-8859-1] (original)
+++ branches/ntvdm/subsystems/ntvdm/emulator.c	[iso-8859-1] Fri Feb 21 19:27:27 2014
@@ -177,12 +177,18 @@

VOID EmulatorSimulate(VOID)
 {
-    UNIMPLEMENTED;
+    // FIXME: Do not mix VdmRunning (i.e. ntvdm running) and CpuSimulate!!
+    while (VdmRunning) ClockUpdate();
+
+    /* This takes into account for reentrance */
+    VdmRunning = TRUE;
 }

VOID EmulatorUnsimulate(VOID)
 {
-    UNIMPLEMENTED;
+    /* Stop simulation */
+    // FIXME: Do not mix VdmRunning (i.e. ntvdm running) and CpuSimulate!!
+    VdmRunning = FALSE;
 }

VOID EmulatorInterrupt(BYTE Number)

Modified: branches/ntvdm/subsystems/ntvdm/emulator.h
URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/emulator....
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/emulator.h	[iso-8859-1] (original)
+++ branches/ntvdm/subsystems/ntvdm/emulator.h	[iso-8859-1] Fri Feb 21 19:27:27 2014
@@ -118,6 +118,8 @@
 VOID EmulatorInterrupt(BYTE Number);
 VOID EmulatorInterruptSignal(VOID);
 VOID EmulatorStep(VOID);
+VOID EmulatorSimulate(VOID);
+VOID EmulatorUnsimulate(VOID);
 VOID EmulatorCleanup(VOID);
 VOID EmulatorSetA20(BOOLEAN Enabled);

Modified: branches/ntvdm/subsystems/ntvdm/ntvdm.c
URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/ntvdm.c?r...
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/ntvdm.c	[iso-8859-1] (original)
+++ branches/ntvdm/subsystems/ntvdm/ntvdm.c	[iso-8859-1] Fri Feb 21 19:27:27 2014
@@ -420,8 +420,8 @@
         goto Cleanup;
     }

-    /* Main loop */
-    while (VdmRunning) ClockUpdate();
+    /* Start simulation */
+    EmulatorSimulate();

/* Perform another screen refresh */
     VgaRefreshDisplay();