serial ports

source/Cosmos.HAL2/BlockDevice/IDE.cs

@@ -29,13 +29,13 @@ internal static void InitDriver()
         {
             if (xDevice != null)
             {
-                Console.WriteLine("ATA Primary Master");
+                Console.WriteLine("Initializing ATA Primary Master...");
                 Initialize(Ata.ControllerIdEnum.Primary, Ata.BusPositionEnum.Master);
-                Console.WriteLine("ATA Primary Slave");
+                Console.WriteLine("Initializing ATA Primary Slave...");
                 Initialize(Ata.ControllerIdEnum.Primary, Ata.BusPositionEnum.Slave);
-                Console.WriteLine("ATA Secondary Master");
+                Console.WriteLine("Initializing ATA Secondary Master...");
                 Initialize(Ata.ControllerIdEnum.Secondary, Ata.BusPositionEnum.Master);
-                Console.WriteLine("ATA Secondary Slave");
+                Console.WriteLine("Initializing ATA Secondary Slave...");
                 Initialize(Ata.ControllerIdEnum.Secondary, Ata.BusPositionEnum.Slave);
             }
 

source/Cosmos.HAL2/Global.cs

@@ -86,7 +86,7 @@ static public void Init(TextScreenBase textScreen, bool InitScrollWheel, bool In
                 mDebugger.Send("Network Driver disabled in User Kernel");
             }
             Console.WriteLine("Enabling Serial Output on COM1");
-            Debug.Serial.Enable();
+            SerialPort.Enable();
             mDebugger.Send("Done initializing Cosmos.HAL.Global");
 
         }

source/Cosmos.HAL2/SerialPort.cs

@@ -0,0 +1,120 @@
+using System;
+using Cosmos.Core;
+namespace Cosmos.HAL
+{
+    /// <summary>
+    /// Provides mehods for interacting with serial ports
+    /// </summary>
+    public static class SerialPort
+    {
+        // com1 is used by qemu by default
+        /// <summary>
+        /// IO port for COM1 port
+        /// </summary>
+        public const ushort COM1 = 0x3f8;
+        /// <summary>
+        /// IO port for COM2 port
+        /// </summary>
+        public const ushort COM2 = 0x2F8;
+        /// <summary>
+        /// IO port for COM3 port
+        /// </summary>
+        public const ushort COM3 = 0x3f8;
+        /// <summary>
+        /// IO port for COM4 port
+        /// </summary>
+        public const ushort COM4 = 0x3f8;
+        /// <summary>
+        /// IO port for COM5 port
+        /// </summary>
+        public const ushort COM5 = 0x3f8;
+        /// <summary>
+        /// IO port for COM6 port
+        /// </summary>
+        public const ushort COM6 = 0x3f8;
+        /// <summary>
+        /// IO port for COM7 port
+        /// </summary>
+        public const ushort COM7 = 0x3f8;
+        /// <summary>
+        /// IO port for COM8 port
+        /// </summary>
+        public const ushort COM8 = 0x3f8; 
+
+        /// <summary>
+        /// Enables certain COM port
+        /// </summary>
+        /// <param name="aPort">COM port</param>
+        public static void Enable(ushort aPort)
+        {
+            IOPort.Write8((ushort)(aPort + 1), 0x00);
+            IOPort.Write8((ushort)(aPort + 3), 0x80);
+            IOPort.Write8(aPort, 0x03);
+            IOPort.Write8((ushort)(aPort + 1), 0x00);
+            IOPort.Write8((ushort)(aPort + 3), 0x03);
+            IOPort.Write8((ushort)(aPort + 2), 0xC7);
+            IOPort.Write8((ushort)(aPort + 4), 0x0B);
+        }
+
+        /// <summary>
+        /// Reads byte (ASCII character) from COM port
+        /// </summary>
+        /// <param name="aPort">COM port</param>
+        /// <returns>ASCII character as byte</returns>
+        public static byte Receive(ushort aPort)
+        {
+            while ((IOPort.Read8((ushort)(aPort + 5)) & 1) == 0) { };
+            return IOPort.Read8(aPort);
+        }
+
+        /// <summary>
+        /// Reads byte (ASCII character) from COM1 port
+        /// </summary>
+        /// <returns></returns>
+        public static byte Receive()
+        {
+            return Receive(COM1);
+        }
+
+        /// <summary>
+        /// Sends character to COM port
+        /// </summary>
+        /// <param name="aText">Character to send</param>
+        /// <param name="aPort">COM port</param>
+        public static void Send(char aText, ushort aPort)
+        {
+            while ((IOPort.Read8((ushort)(aPort + 5)) & 0x20) == 0) { };
+            IOPort.Write8(aPort, (byte)aText);
+        }
+
+        /// <summary>
+        /// Sends character to COM1 port
+        /// </summary>
+        /// <param name="aText">Character to send</param>
+        public static void Send(char aText)
+        {
+            Send(aText, COM1);
+        }
+
+        /// <summary>
+        /// Sends string to COM port
+        /// </summary>
+        /// <param name="aText">String to send</param>
+        /// <param name="aPort">COM port</param>
+        public static void SendString(string aText, ushort aPort)
+        {
+            for (int i = 0; i < aText.Length; ++i)
+            {
+                Send(aText[i], aPort);
+            }
+        }
+        /// <summary>
+        /// Sends string to COM1 port
+        /// </summary>
+        /// <param name="aText">String to send</param>
+        public static void SendString(string aText)
+        {
+            SendString(aText, COM1);
+        }
+    }
+}