diff --git a/mdl/m_io_base.pas b/mdl/m_io_base.pas
index aa304c7..ff88255 100644
--- a/mdl/m_io_base.pas
+++ b/mdl/m_io_base.pas
@@ -19,7 +19,7 @@ Type
 
     Constructor Create; Virtual;
     Destructor  Destroy; Override;
-    Procedure   PurgeInputData;
+    Procedure   PurgeInputData  (Drain: Boolean);
     Procedure   PurgeOutputData;
     Function    DataWaiting     : Boolean; Virtual;
     Function    WriteBuf        (Var Buf; Len: LongInt) : LongInt; Virtual;
@@ -56,15 +56,16 @@ Begin
   FOutBufPos := 0;
 End;
 
-Procedure TIOBase.PurgeInputData;
-//Var
-//  Buf : Array[1..2048] of Char;
+Procedure TIOBase.PurgeInputData (Drain: Boolean);
+Var
+  Buf : Array[1..2048] of Char;
 Begin
   FInBufPos := 0;
   FInBufEnd := 0;
 
-//  While DataWaiting Do
-//    ReadBuf(Buf, SizeOf(Buf));
+  If Drain Then
+    While DataWaiting Do
+      ReadBuf(Buf, SizeOf(Buf));
 End;
 
 Function TIOBase.DataWaiting : Boolean;
diff --git a/mdl/m_pipe.pas b/mdl/m_pipe.pas
index 92c3c67..5a87812 100644
--- a/mdl/m_pipe.pas
+++ b/mdl/m_pipe.pas
@@ -10,8 +10,8 @@ Interface
 {$ENDIF}
 
 {$IFDEF WINDOWS}
-  Uses m_Pipe_Disk;
-  Type TPipe = Class(TPipeDisk);
+  Uses m_Pipe_Windows;
+  Type TPipe = Class(TPipeWindows);
 {$ENDIF}
 
 {$IFDEF OS2}
diff --git a/mdl/m_pipe_disk.pas b/mdl/m_pipe_disk.pas
index 61e5c7d..3f5e49b 100644
--- a/mdl/m_pipe_disk.pas
+++ b/mdl/m_pipe_disk.pas
@@ -39,7 +39,7 @@ Type
     // General functions
     Procedure   DeleteFiles;
     Procedure   SendToPipe   (Var Buf; Len: Longint);
-    Procedure   ReadFromPipe (Var Buf; Len: LongInt; Var bRead: LongInt);
+    Procedure   ReadFromPipe (Var Buf; Len: LongInt; Var bRead: LongWord);
     Procedure   Disconnect;
   End;
 
@@ -125,7 +125,7 @@ Begin
   BlockWrite (PipeOutput, Buf, Len, bWrite);
 End;
 
-Procedure TPipeDisk.ReadFromPipe (Var Buf; Len: LongInt; Var bRead: LongInt);
+Procedure TPipeDisk.ReadFromPipe (Var Buf; Len: LongInt; Var bRead: LongWord);
 Var
   Buffer  : TPipeDiskBuffer Absolute Buf;
   Ch      : Char;
diff --git a/mdl/m_protocol_zmodem.pas b/mdl/m_protocol_zmodem.pas
index 0191ba3..482475d 100644
--- a/mdl/m_protocol_zmodem.pas
+++ b/mdl/m_protocol_zmodem.pas
@@ -1774,7 +1774,7 @@ Begin
 
   {$IFDEF ZDEBUG} ZLog('DoAbortSequence -> begin'); {$ENDIF}
 
-  Client.PurgeInputData;
+  Client.PurgeInputData(False);
   Client.PurgeOutputData;
 
   Client.BufWriteStr(Attn);
diff --git a/mdl/m_strings.pas b/mdl/m_strings.pas
index ee46bd0..e10aa1a 100644
--- a/mdl/m_strings.pas
+++ b/mdl/m_strings.pas
@@ -17,6 +17,7 @@ Function strH2I       (Str: String) : LongInt;
 Function strI2H       (Num: LongInt) : String;
 Function strS2I       (Str: String) : LongInt;
 Function strI2O       (Num: LongInt) : String;
+Function strR2S       (Num: Real; Deci: Byte) : String;
 Function strWordGet   (Num: Byte; Str: String; Ch: Char) : String;
 Function strWordPos   (Num: Byte; Str: String; Ch: Char) : Byte;
 Function strWordCount (Str: String; Ch: Char) : Byte;
@@ -205,6 +206,11 @@ Begin
   Str(Num, Result);
 End;
 
+Function strR2S (Num: Real; Deci: Byte) : String;
+Begin
+  Str (Num:0:Deci, Result);
+End;
+
 Function strS2I (Str: String) : LongInt;
 Var
   Res : LongInt;