From 2d21791c66f7e00a816e34a00c472f8b471c7955 Mon Sep 17 00:00:00 2001
From: Siaranite <arawn.780@outlook.com>
Date: Sun, 1 Apr 2018 15:58:58 +0100
Subject: [PATCH] Return to text mode fixed for VMWare

---
 Demos/CosmosGraphicSubsystem/Kernel.cs               | 6 +++---
 source/Cosmos.HAL2/Drivers/PCI/Video/VMWareSVGAII.cs | 5 +++++
 source/Cosmos.System2/Graphics/SVGAIIScreen.cs       | 2 +-
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/Demos/CosmosGraphicSubsystem/Kernel.cs b/Demos/CosmosGraphicSubsystem/Kernel.cs
index 31f50c527..7ddb1bcff 100644
--- a/Demos/CosmosGraphicSubsystem/Kernel.cs
+++ b/Demos/CosmosGraphicSubsystem/Kernel.cs
@@ -72,18 +72,18 @@ namespace Cosmos_Graphic_Subsytem
                  * canvas.DrawString(pen, "Please press any key to continue the Demo...");
                  */
                 Console.ReadKey();
-                /*
+                
                 // Throws a NotImplementedException in VMWare,
                 // due to being unable to escape from the clutches of the SVGA II driver...
                 //
                 // Probably best to leave this commented out until it can work in VMWare as well
-                
+                canvas.Clear();
                 canvas.Disable();
                 Console.Clear();
                 Console.WriteLine("If it worked, you've successfully returned back to standard VGA Text Mode!");
                 Console.WriteLine("Let's try returning back to CGS mode... Press any key!");
                 Console.ReadKey(true);
-                */
+                
 
                 /* Let's try to change mode...*/
                 canvas.Mode = new Mode(1024, 768, ColorDepth.ColorDepth32);
diff --git a/source/Cosmos.HAL2/Drivers/PCI/Video/VMWareSVGAII.cs b/source/Cosmos.HAL2/Drivers/PCI/Video/VMWareSVGAII.cs
index 00a75ac88..8977edd83 100644
--- a/source/Cosmos.HAL2/Drivers/PCI/Video/VMWareSVGAII.cs
+++ b/source/Cosmos.HAL2/Drivers/PCI/Video/VMWareSVGAII.cs
@@ -333,6 +333,11 @@ namespace Cosmos.HAL.Drivers.PCI.Video
             WaitForFifo();
         }
 
+        public void Disable()
+        {
+            WriteRegister(Register.Enable, 0);
+        }
+
         public void SetCursor(bool visible, uint x, uint y)
         {
             WriteRegister(Register.CursorID, 1);
diff --git a/source/Cosmos.System2/Graphics/SVGAIIScreen.cs b/source/Cosmos.System2/Graphics/SVGAIIScreen.cs
index 0f8e7e89d..068676567 100644
--- a/source/Cosmos.System2/Graphics/SVGAIIScreen.cs
+++ b/source/Cosmos.System2/Graphics/SVGAIIScreen.cs
@@ -9,7 +9,7 @@ namespace Cosmos.System.Graphics
     {
         public override void Disable()
         {
-            throw new NotImplementedException();
+            xSVGAIIDriver.Disable();
         }
 
         public VMWareSVGAII xSVGAIIDriver;