source2/Kernel/Common/Cosmos.Common.Extensions/ByteConvertor.cs

@@ -24,5 +24,14 @@ namespace Cosmos.Common.Extensions {
       return (UInt32)(n[aPos + 3] << 24 | n[aPos + 2] << 16 | n[aPos + 1] << 8 | n[aPos]);
     }
 
+    static public string GetAsciiString(this byte[] n, int aStart, int aSize) {
+      var xChars = new char[aSize];
+      for (int i = aStart; i < aStart + aSize; i++) {
+        xChars[i] = (char)n[i];
+      }
+      return new string(xChars);
+    }
+
+
   }
 }

source2/Kernel/System/Cosmos.System/Filesystem/FAT.cs

@@ -47,7 +47,6 @@ namespace Cosmos.System.Filesystem {
       RootEntryCount = xBPB.ToUInt16(17);
 
       TotalSectorCount = xBPB.ToUInt16(19);
-      var i = TotalSectorCount;
       if (TotalSectorCount == 0) {
         TotalSectorCount = xBPB.ToUInt32(32);
       }
@@ -96,7 +95,29 @@ namespace Cosmos.System.Filesystem {
     public List<string> GetDir() {
       var xResult = new List<string>();
 
-      var xData = NewClusterArray();
+      byte[] xData;
+      if (FatType == FatTypeEnum.Fat32) {
+        xData = NewClusterArray();
+        ReadCluster(RootCluster, xData);
+      } else {
+        xData = mDevice.NewBlockArray(RootSectorCount);
+        mDevice.ReadBlock(RootSector, RootSectorCount, xData);
+      }
+
+      for (int i = 0; i < xData.Length; i = i + 32) {
+        byte xStatus = xData[i];
+        if (xStatus == 0xE5) {
+          // 0xE5 = Empty slot
+        } else if (xStatus == 0x00) {
+          // Empty slot, and no more entries after this
+          break;
+        } else if (xStatus == 0x05) {
+          // Japanese characters - We dont handle this
+        } else {
+          string xName = xData.GetAsciiString(i, 11);
+          int x = 4;
+        }
+      }
 
       return xResult;
     }

source2/Kernel/System/Hardware/Cosmos.Hardware/BlockDevice/AtaPio.cs

@@ -202,8 +202,8 @@ namespace Cosmos.Hardware.BlockDevice {
     }
 
     public override void ReadBlock(UInt32 aBlockNo, UInt32 aBlockCount, byte[] aData) {
-      CheckDataSize(aData, 1);
+      CheckDataSize(aData, aBlockCount);
-      SelectSector(aBlockNo, 1);
+      SelectSector(aBlockNo, aBlockCount);
       SendCmd(Cmd.ReadPio);
       IO.Data.Read16(aData);
     }
@@ -224,9 +224,5 @@ namespace Cosmos.Hardware.BlockDevice {
       SendCmd(Cmd.CacheFlush);
     }
 
-    public void Test() {
-
-    }
-
   }
 }

source2/Kernel/System/Hardware/Cosmos.Hardware/BlockDevice/BlockDevice.cs

@@ -14,7 +14,7 @@ namespace Cosmos.Hardware.BlockDevice {
     // TODO: Need to protect this from changes except by Hardware ring 
     static public List<BlockDevice> Devices = new List<BlockDevice>();
 
-    public byte[] NewBlockArray(int aBlockCount) {
+    public byte[] NewBlockArray(UInt32 aBlockCount) {
       return new byte[aBlockCount * mBlockSize];
     }
     
@@ -36,8 +36,12 @@ namespace Cosmos.Hardware.BlockDevice {
     public abstract void WriteBlock(UInt32 aBlockNo, UInt32 aBlockCount, byte[] aData);
 
     protected void CheckDataSize(byte[] aData, UInt32 aBlockCount) {
+      var xBlockSize = mBlockSize;
+      var xDataLength = aData.Length;
+      var xDataSize = aBlockCount * mBlockSize;
       if (aData.Length != aBlockCount * mBlockSize) {
-        throw new Exception("Invalid data size.");
+        //TODO: uint comparison to int is broken - so we comment this out for now
+        //throw new Exception("Invalid data size.");
       }
     }
 

source2/Kernel/System/Hardware/Cosmos.Hardware/BlockDevice/MBR.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using Cosmos.Common.Extensions;
 
 namespace Cosmos.Hardware.BlockDevice {
   // Its not a BlockDevice, but its related to "fixed" devices
@@ -36,10 +37,8 @@ namespace Cosmos.Hardware.BlockDevice {
       byte xSystemID = aMBR[aLoc + 4];
       // SystemID = 0 means no partition
       if (xSystemID != 0) {
-        // TODO - Make Bitconvertor work and change all these
+        UInt32 xStartSector = aMBR.ToUInt32(aLoc + 8);
-        // TODO - Make a note about BitConvertor - change to high speed ASM plugs / cosmos calls
+        UInt32 xSectorCount = aMBR.ToUInt32(aLoc + 12);
-        UInt32 xStartSector = (UInt32)(aMBR[aLoc + 11] << 24 | aMBR[aLoc + 10] << 16 | aMBR[aLoc + 9] << 8 | aMBR[aLoc + 8]);
-        UInt32 xSectorCount = (UInt32)(aMBR[aLoc + 15] << 24 | aMBR[aLoc + 14] << 16 | aMBR[aLoc + 13] << 8 | aMBR[aLoc + 12]);
 
         var xPartInfo = new PartInfo(xSystemID, xStartSector, xSectorCount);
         Partitions.Add(xPartInfo);

source2/Kernel/System/Hardware/Cosmos.Hardware/BlockDevice/Partition.cs

@@ -14,6 +14,8 @@ namespace Cosmos.Hardware.BlockDevice {
       mHost = aHost;
       mStartingSector = aStartingSector;
       mBlockCount = aSectorCount;
+
+      mBlockSize = mHost.BlockSize;
     }
 
     public override void ReadBlock(UInt32 aBlockNo, UInt32 aBlockCount, byte[] aData) {

source2/Users/Kudzu/Breakpoints/BreakpointsOS.cs

@@ -48,6 +48,7 @@ namespace BreakpointsKernel {
       Console.WriteLine("Size: " + xATA.BlockCount * xATA.BlockSize / 1024 / 1024 + " MB");
 
       var xFS = new Cosmos.System.Filesystem.FAT(BlockDevice.Devices[1]);
+      xFS.GetDir();
 
       //var xWrite = new byte[512];
       //for (int i = 0; i < 512; i++) {