working dump.com.

binary.pas

@@ -9,7 +9,7 @@ WStr     =  String[4];  { String representing a u16. }
 BinFile  = File of Byte;
 
 
-Procedure ExpandFile(var fil : BinFile; var pos : Integer; pad : Integer);
+procedure ExpandFile(var fil : BinFile; var pos : Integer; pad : Integer);
 var
     i : Integer;
 begin
@@ -113,6 +113,7 @@ begin
    WriteByte := s;
 end;
 
+
 function WriteWord(bval : Integer): WStr;
 var
    s : WStr;

dump.pas

@@ -9,42 +9,105 @@ program dump;
 {$I 'common.pas'}
 
 
-procedure DumpChunk(
-  var src   : BinFile;
-  var dst   : Text;
-  var addr  : Integer,
-  var chunk : Byte);
-var
-    buffer : array [1 .. 16] of Byte;
+type
+FileChunk  = Array [1 .. 16] of Byte;
+
+
+procedure PrnHelp;
 begin
-    Write(dst, WriteWord(addr));
-    Write(dst, ' ');
-
-
-
+    WriteLn('DUMP V1.0');
+    WriteLn('Hexadecimal dump binary files.');
+    WriteLn('');
+    WriteLn('Usage:');
+    WriteLn('    DUMP.COM SOURCE [DEST]');
+    WriteLn(' If only one argument is provided, DUMP will');
+    WriteLn(' output to the console.');
+    WriteLn('');
 end;
 
-procedure DumpFile(var src : BinFile; var dst : Text);
+
+procedure DumpChunk(
+  var Dest : Text;
+  var Addr : Integer;
+  Buffer   : FileChunk;
+  Chunk    : Byte);
+var
+    I      : Byte;
+begin
+    Write(Dest, WriteWord(Addr));
+
+    for I := 1 to Chunk do
+    begin
+        Write(Dest, ' ');
+        Write(Dest, WriteByte(Buffer[I]));
+    end;
+    WriteLn(Dest, '');
+
+    Addr := Addr + Chunk;
+end;
+
+
+procedure DumpFile(var Source : BinFile; var Dest : Text);
+label finished;
+const Chunk = 16;
 var
     Address : Integer;
     Size    : Integer;
-    Buffer  : array [1 .. 16] of Byte;
-    Chunk   : Byte;
+    Buffer  : FileChunk;
+    Cursor  : Byte;
 begin
     Address := 0;
-    Size    := FileSize(src);
-    Chunk   := IMin($10, Size);
+    Cursor  := 0;
 
     FillChar(Buffer, $10, $0);
-    WriteLn('Chunk:  ', Chunk);
+    while not EOF(Source) do
+    begin
+        Cursor := Cursor + 1;
+        Read(Source, Buffer[Cursor]);
+        if EOF(Source) then goto finished;
+
+        if Cursor = Chunk then
+        begin
+            DumpChunk(Dest, Address, Buffer, Chunk);
+            Cursor := 0;
+        end;
+    end;
+
+finished:
+    if Cursor > 0 then
+        DumpChunk(Dest, Address, Buffer, Chunk);
+
+    Close(Dest);
 end;
 
 
 var
-    inf : BinFile;
+    IName  : FilePath;
+    OName  : FilePath;
+    Source : BinFile;
+    Dest   : Text;
+
 begin
-    Assign(inf, 'dump.bin');
-    Reset(inf);
+    IName := '';
+    OName := '';
+
+    case ParamCount of
+    0 : PrnHelp;
+    1 : IName := ParamStr(1);
+    2 : begin
+            IName := ParamStr(1);
+            OName := ParamStr(2);
+        end;
+    end;
+
+    Assign(Source, IName);
+    Reset(Source);
+
+    if OName <> '' then
+    begin
+        Assign(Dest, OName);
+        Rewrite(Dest);
+    end else Assign(Dest, Output);
 
     DumpFile(inf, Output);
 end.

test.pas

@@ -13,6 +13,4 @@ begin
    begin
        WriteLn(I, '->', WriteByte(I));
    end;
-
-   LowVideo;
 end.

undump.pas

@@ -15,7 +15,7 @@ begin
     WriteLn('');
     WriteLn('Usage:');
     WriteLn('    UNDUMP.COM [-BH] [INFILE] OUTFILE');
-    WriteLn(' If only one argumet is given, it will be assigned');
+    WriteLn(' If only one argument is given, it will be assigned');
     WriteLn(' to the output file and input will be set to standard');
     WriteLn(' output.');
     WriteLn('');
@@ -77,7 +77,6 @@ var
     rec  : IRec;
     nlc  : Byte; { newline count }
     i    : Byte;
-    pos  : Integer;
 begin
     nlc := 0;
     if iname <> '' then
@@ -98,10 +97,6 @@ begin
         if (Line <> '') then
         begin
             rec  := RdDumpLn(line);
-            pos  := FilePos(outf);
-            if pos > rec.Addr then
-                ExpandFile(outf, pos, pos-rec.Addr);
-            if pos <> rec.Addr then Seek(outf, rec.Addr-pos);
             for i := 1 to rec.Count do
                 Write(outf, rec.Data[i]);
             nlc := 0;