diff --git a/DiscImageChef.Decoders/ATA/Registers.cs b/DiscImageChef.Decoders/ATA/Registers.cs
index 006e40aa1..8e15cf4a1 100644
--- a/DiscImageChef.Decoders/ATA/Registers.cs
+++ b/DiscImageChef.Decoders/ATA/Registers.cs
@@ -30,8 +30,11 @@
 // Copyright © 2011-2019 Natalia Portillo
 // ****************************************************************************/
 
+using System.Runtime.InteropServices;
+
 namespace DiscImageChef.Decoders.ATA
 {
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
     public struct AtaRegistersChs
     {
         public byte Feature;
@@ -43,6 +46,7 @@ namespace DiscImageChef.Decoders.ATA
         public byte Command;
     }
 
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
     public struct AtaRegistersLba28
     {
         public byte Feature;
@@ -54,6 +58,7 @@ namespace DiscImageChef.Decoders.ATA
         public byte Command;
     }
 
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
     public struct AtaRegistersLba48
     {
         public ushort Feature;
@@ -61,10 +66,11 @@ namespace DiscImageChef.Decoders.ATA
         public ushort LbaLow;
         public ushort LbaMid;
         public ushort LbaHigh;
-        public byte   DeviceHead;
-        public byte   Command;
+        public byte DeviceHead;
+        public byte Command;
     }
 
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
     public struct AtaErrorRegistersChs
     {
         public byte Status;
@@ -76,6 +82,7 @@ namespace DiscImageChef.Decoders.ATA
         public byte DeviceHead;
     }
 
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
     public struct AtaErrorRegistersLba28
     {
         public byte Status;
@@ -87,14 +94,15 @@ namespace DiscImageChef.Decoders.ATA
         public byte DeviceHead;
     }
 
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
     public struct AtaErrorRegistersLba48
     {
-        public byte   Status;
-        public byte   Error;
+        public byte Status;
+        public byte Error;
         public ushort SectorCount;
         public ushort LbaLow;
         public ushort LbaMid;
         public ushort LbaHigh;
-        public byte   DeviceHead;
+        public byte DeviceHead;
     }
 }
\ No newline at end of file
diff --git a/DiscImageChef.Devices/Remote/Enums.cs b/DiscImageChef.Devices/Remote/Enums.cs
index a15042994..19cac556b 100644
--- a/DiscImageChef.Devices/Remote/Enums.cs
+++ b/DiscImageChef.Devices/Remote/Enums.cs
@@ -6,7 +6,17 @@ namespace DiscImageChef.Devices.Remote
         Hello = 1,
         CommandListDevices = 2,
         ResponseListDevices = 3,
-        CommandOpen = 4
+        CommandOpen = 4,
+        CommandScsi = 5,
+        ResponseScsi = 6,
+        CommandAtaChs = 7,
+        ResponseAtaChs = 8,
+        CommandAtaLba28 = 9,
+        ResponseAtaLba28 = 10,
+        CommandAtaLba48 = 11,
+        ResponseAtaLba48 = 12,
+        CommandSdhci = 13,
+        ResponseSdhci = 14
     }
 
     public enum DicNopReason : byte
diff --git a/DiscImageChef.Devices/Remote/Structs.cs b/DiscImageChef.Devices/Remote/Structs.cs
index cd0bfb0c0..34bee140a 100644
--- a/DiscImageChef.Devices/Remote/Structs.cs
+++ b/DiscImageChef.Devices/Remote/Structs.cs
@@ -1,4 +1,5 @@
 using System.Runtime.InteropServices;
+using DiscImageChef.Decoders.ATA;
 
 namespace DiscImageChef.Devices.Remote
 {
@@ -77,4 +78,127 @@ namespace DiscImageChef.Devices.Remote
         [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 1024)]
         public string device_path;
     }
+
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
+    public struct DicPacketCmdScsi
+    {
+        public DicPacketHeader hdr;
+        public uint cdb_len;
+        public uint buf_len;
+        public int direction;
+        public uint timeout;
+    }
+
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
+    public struct DicPacketResScsi
+    {
+        public DicPacketHeader hdr;
+        public uint sense_len;
+        public uint buf_len;
+        public uint duration;
+        public uint sense;
+        public uint errno;
+    }
+
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
+    public struct DicPacketCmdAtaChs
+    {
+        public DicPacketHeader hdr;
+        public uint buf_len;
+        public AtaRegistersChs registers;
+        public byte protocol;
+        public byte transferRegister;
+        public byte transferBlocks;
+        public byte spare;
+        public uint timeout;
+    }
+
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
+    public struct DicPacketResAtaChs
+    {
+        public DicPacketHeader hdr;
+        public uint buf_len;
+        public AtaErrorRegistersChs registers;
+        public uint duration;
+        public uint sense;
+        public uint errno;
+    }
+
+
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
+    public struct DicPacketCmdAtaLba28
+    {
+        public DicPacketHeader hdr;
+        public uint buf_len;
+        public AtaRegistersLba28 registers;
+        public byte protocol;
+        public byte transferRegister;
+        public byte transferBlocks;
+        public byte spare;
+        public uint timeout;
+    }
+
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
+    public struct DicPacketResAtaLba28
+    {
+        public DicPacketHeader hdr;
+        public uint buf_len;
+        public AtaErrorRegistersLba28 registers;
+        public uint duration;
+        public uint sense;
+        public uint errno;
+    }
+
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
+    public struct DicPacketCmdAtaLba48
+    {
+        public DicPacketHeader hdr;
+        public uint buf_len;
+        public AtaRegistersLba48 registers;
+        public byte protocol;
+        public byte transferRegister;
+        public byte transferBlocks;
+        public byte spare;
+        public uint timeout;
+    }
+
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
+    public struct DicPacketResAtaLba48
+    {
+        public DicPacketHeader hdr;
+        public uint buf_len;
+        public AtaErrorRegistersLba48 registers;
+        public uint duration;
+        public uint sense;
+        public uint errno;
+    }
+
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
+    public struct DicPacketCmdSdhci
+    {
+        public DicPacketHeader hdr;
+        public MmcCommands command;
+        [MarshalAs(UnmanagedType.U1)] public bool write;
+        [MarshalAs(UnmanagedType.U1)] public bool application;
+        public MmcFlags flags;
+        public uint argument;
+        public uint block_size;
+        public uint blocks;
+        public uint buf_len;
+        public uint timeout;
+    }
+
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
+    public struct DicPacketResSdhci
+    {
+        public DicPacketHeader hdr;
+        public uint buf_len;
+
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
+        public uint[] response;
+
+        public uint duration;
+        public uint sense;
+        public uint errno;
+    }
 }
\ No newline at end of file