commit 13342da976ae207b5cfe8ec6d11f810496526088
Author: Luca Ridarelli <tech@ridarelli.net>
Date:   Tue Jan 10 17:47:07 2017 +0100

    First Commit for os9_conv Project

diff --git a/os9_conv/.cproject b/os9_conv/.cproject
new file mode 100644
index 0000000..243310d
--- /dev/null
+++ b/os9_conv/.cproject
@@ -0,0 +1,118 @@
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diff --git a/os9_conv/.project b/os9_conv/.project
new file mode 100644
index 0000000..b6f94a1
--- /dev/null
+++ b/os9_conv/.project
@@ -0,0 +1,27 @@
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new file mode 100644
index 0000000..fd25273
--- /dev/null
+++ b/os9_conv/.settings/language.settings.xml
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new file mode 100644
index 0000000..d110eba
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new file mode 100644
index 0000000..ced2103
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+					<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
+				</extensions>
+			</storageModule>
+			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+				<configuration buildProperties="" id="cdt.managedbuild.toolchain.gnu.mingw.base.32303358" name="Default" parent="org.eclipse.cdt.build.core.emptycfg">
+					<folderInfo id="cdt.managedbuild.toolchain.gnu.mingw.base.32303358.773627156" name="/" resourcePath="">
+						<toolChain id="cdt.managedbuild.toolchain.gnu.mingw.base.1836263658" name="MinGW GCC" superClass="cdt.managedbuild.toolchain.gnu.mingw.base">
+							<targetPlatform archList="all" binaryParser="org.eclipse.cdt.core.PE" id="cdt.managedbuild.target.gnu.platform.mingw.base.269092175" name="Debug Platform" osList="win32" superClass="cdt.managedbuild.target.gnu.platform.mingw.base"/>
+							<builder buildPath="${workspace_loc:/os9_conv}/Default" id="cdt.managedbuild.tool.gnu.builder.mingw.base.677748880" managedBuildOn="false" name="CDT Internal Builder.Default" superClass="cdt.managedbuild.tool.gnu.builder.mingw.base"/>
+							<tool id="cdt.managedbuild.tool.gnu.assembler.mingw.base.689859461" name="GCC Assembler" superClass="cdt.managedbuild.tool.gnu.assembler.mingw.base"/>
+							<tool id="cdt.managedbuild.tool.gnu.archiver.mingw.base.1313435511" name="GCC Archiver" superClass="cdt.managedbuild.tool.gnu.archiver.mingw.base"/>
+							<tool id="cdt.managedbuild.tool.gnu.cpp.compiler.mingw.base.209572600" name="GCC C++ Compiler" superClass="cdt.managedbuild.tool.gnu.cpp.compiler.mingw.base"/>
+							<tool id="cdt.managedbuild.tool.gnu.c.compiler.mingw.base.415339441" name="GCC C Compiler" superClass="cdt.managedbuild.tool.gnu.c.compiler.mingw.base"/>
+							<tool id="cdt.managedbuild.tool.gnu.c.linker.mingw.base.2019544820" name="MinGW C Linker" superClass="cdt.managedbuild.tool.gnu.c.linker.mingw.base"/>
+							<tool id="cdt.managedbuild.tool.gnu.cpp.linker.mingw.base.808883770" name="MinGW C++ Linker" superClass="cdt.managedbuild.tool.gnu.cpp.linker.mingw.base"/>
+						</toolChain>
+					</folderInfo>
+				</configuration>
+			</storageModule>
+			<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
+		</cconfiguration>
+	</storageModule>
+	<storageModule moduleId="cdtBuildSystem" version="4.0.0">
+		<project id="os9_conv.null.1123521369" name="os9_conv"/>
+	</storageModule>
+	<storageModule moduleId="scannerConfiguration">
+		<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
+	</storageModule>
+	<storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
+</cproject>
diff --git a/os9_conv/src/.project b/os9_conv/src/.project
new file mode 100644
index 0000000..72d6c5b
--- /dev/null
+++ b/os9_conv/src/.project
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>os9_conv</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
+			<triggers>clean,full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
+			<triggers>full,incremental,</triggers>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.cdt.core.cnature</nature>
+		<nature>org.eclipse.cdt.core.ccnature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
+	</natures>
+</projectDescription>
diff --git a/os9_conv/src/.settings/language.settings.xml b/os9_conv/src/.settings/language.settings.xml
new file mode 100644
index 0000000..f5eff5f
--- /dev/null
+++ b/os9_conv/src/.settings/language.settings.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<project>
+	<configuration id="cdt.managedbuild.toolchain.gnu.mingw.base.32303358" name="Default">
+		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
+			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
+			<provider copy-of="extension" id="org.eclipse.cdt.managedbuilder.core.GCCBuildCommandParser"/>
+			<provider class="org.eclipse.cdt.managedbuilder.internal.language.settings.providers.GCCBuiltinSpecsDetectorMinGW" console="false" env-hash="1359327117013955626" id="org.eclipse.cdt.managedbuilder.core.GCCBuiltinSpecsDetectorMinGW" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings MinGW" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+				<language-scope id="org.eclipse.cdt.core.gcc"/>
+				<language-scope id="org.eclipse.cdt.core.g++"/>
+			</provider>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+		</extension>
+	</configuration>
+</project>
diff --git a/os9_conv/src/README.TXT b/os9_conv/src/README.TXT
new file mode 100644
index 0000000..ec0cde3
--- /dev/null
+++ b/os9_conv/src/README.TXT
@@ -0,0 +1,81 @@
+ABOUT
+
+os9_conv is a small tool used to convert APPLE ][ OS9 Stellation Two "The Mill" DSK image disks (created using ADT tool) to
+standard RBF OS9 DSK image disks, such as, for example,  those used by the TRS-80 Color Computer, and back.
+
+The aim of this utility is to create an OS9 RBF floppy disk image compatible with the "toolshed" TRS-80 Color Computer utility.
+The toolshed utility allows direct manupulation of OS9 RBF disk image content from MS-DOS, allowing to directly read,write OS9 files 
+etc.
+
+With the toolshed and os9_conv tools combination is now possible to transfer files back and forth to the Apple ][ Stellation Two 
+"The Mill" OS9 implementation. 
+ 
+ USE
+ 
+os9_conv syntax is:
+ 
+        os9_conv <source file> <destination file> <option>
+ 
+where options are:
+   -a (convert OS9 dsk image to Apple ][ \"The Mill\" format)
+   -o (convert Apple ][ \"The Mill\" OS9 DSK image to OS9 format)
+ 
+ EXAMPLE 1
+ 
+Let's say that we want to extract the ECHO executable binary file  from the APPLE ][ OS9 o.s. system disk image 
+(for example OS9BASIC.dsk); we first proceed converting the APPLE ][ OS9 DSK disk image to OS9 RBF standard with the command:
+ 
+       OS9_conv OS9BASIC.dsk OS9BASICRBF.dsk -o
+ 
+OS9_conv will convert the source file OS9BASIC.dsk to OS9 RBF format (-o option)  and write it to the destination file OS9BASICRBF.dsk
+(or whatever filename you choose) .
+ 
+To exctract the ECHO executable binary file from OS9BASICRBF.dsk using the toolshed OS9 tool the command would be:
+ 
+       OS9 copy OS9BASICRBF.dsk,CMDS/ECHO ECHO
+ 
+The ECHO binary file will be created under MS-DOS. See toolshed documentation for a list of the available commands.
+ 
+ EXAMPLE 2
+ 
+Lets' say that we want to make the reverse operation of EXAMPLE 1 by writing a binary file (examlple MYBINARY file )to the 
+APPLE ][ OS9 OS9BASIC.dsk disk .
+We first proceed converting the APPLE ][ OS9 DSK disk image to OS9 RBF standard with the command:
+ 
+       OS9_conv OS9BASIC.dsk OS9BASICRBF.dsk -o
+       
+OS9_conv will convert the source file OS9BASIC.dsk to OS9 RBF format (-o option)  and write it to the destination file OS9BASICRBF.dsk
+ (or whatever filename you choose) .
+ 
+To write the MYBINARY file to OS9BASICRBF.dsk disk using the toolshed OS9 tool the command would be:
+ 
+       OS9 copy MYBINARY OS9BASICRBF.dsk,MYBINARY
+       
+The MYBINARY binary file will be written in the root directory of OS9BASICRBF.dsk disk. See toolshed documentation for a list 
+of the available commands.
+
+Finally we revert  OS9BASICRBF.dsk back to APPLE ][ Stellation Two "The MILL" OS9 disk format with the command:
+
+       OS9_conv OS9BASICRBF.dsk OS9BASIC.dsk -a
+       
+The resulting image can be fed in an APPLE ][ emulator (mame can emulate an  APPLE ][ with a Stellation Two "The Mill" card,
+or an real flippy written with a tool such as ADT. 
+
+NOTE
+
+Due to the a not competely standard  implementation of the RBF file system in the APPLE ][ Stellation Two "The MILL" OS9 disk 
+structure, to mantain disk integrity, any  operation is ALWAYS started from an APPLE ][ OS9 DSK disk image. 
+
+LICENCE
+
+Apple ][ "The Mill" OS9 DSK image to OS9 RBF format converter  os9_conv is released under the terms of the GNU 
+General Public License version 3 as published by the Free Software Foundation.
+You can redistribute it and/or modify it.
+This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY.
+See the GNU General Public License for more details.
+       
+CREDITS
+
+2017 - Luca Ridarelli
+
+
diff --git a/os9_conv/src/os9_conv.c b/os9_conv/src/os9_conv.c
new file mode 100644
index 0000000..a9817fb
--- /dev/null
+++ b/os9_conv/src/os9_conv.c
@@ -0,0 +1,213 @@
+/*
+ * os9_conv.c
+ *
+ * Apple ][ "The Mill" OS9 DSK image to OS9 RBF format (and back) converter
+ *
+ *  Created on: 07 gen 2017
+ *      Author: Luca Ridarelli
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define TRACKS 35                               /* There are 35 tracks in an Apple ][ standard floppy disk */
+#define SECTORS 16                              /* 16 sectors per track */
+#define BYTES_SECTOR 256                        /* 256 bytes per sector */
+#define TOTAL_BYTES TRACKS*SECTORS*BYTES_SECTOR /* counting a total of 14560 bytes */
+
+
+/* Functions  prototypes */
+
+void convert_to_OS9( char source[TRACKS][SECTORS][BYTES_SECTOR],char dest[TRACKS][SECTORS][BYTES_SECTOR], int interleave[SECTORS]);
+
+void convert_to_apple( char source[TRACKS][SECTORS][BYTES_SECTOR],char dest[TRACKS][SECTORS][BYTES_SECTOR], int interleave[SECTORS]);
+
+void show_help();
+
+/* Main entry point */
+
+int main(int argc, char *argv[])
+{
+  /* Buffers to hold the source and destination dsk images */
+  char source_buffer[TRACKS][SECTORS][BYTES_SECTOR];
+  char destination_buffer[TRACKS][SECTORS][BYTES_SECTOR];
+
+  /* The Apple ][ "The Mill" disk sector interleave ransleation table*/
+
+  int apple_interleave[SECTORS] = {0x00,0x0C,0x02,0x07,0x04,0x09,0x0E,0x0B,
+                              0x01,0x06,0x03,0x08,0x0D,0x0A,0x05,0x0F} ;
+
+  /* Variables to hold the user provided arguments */
+  char* source_file_name;
+  char* destination_file_name;
+  char* option ;
+
+  /* The actions to perform */
+  enum action {toNone, toMILL, toOS9};
+  enum action convert = toNone;
+
+  /* Input and output standard file structures */
+  FILE *source_file;
+  FILE *destination_file;
+
+
+  /* Check the number of arguments and grab them */
+  if (argc==4)
+    {
+      source_file_name=argv[1];
+      destination_file_name=argv[2];
+      option=argv[3];
+    }
+  else
+    { if (argc==1)
+      {
+	printf("\nApple ][ \"The Mill\" <-> OS9 RBF DSK converter V 1.0 - 2017 Luca Ridarelli\n\n"
+	         "DSK disk images must origin from Apple ][ \"The Mill\" OS9\n\n");
+      }
+      show_help();
+      return(EXIT_FAILURE);
+    }
+
+  /* check the <option> argument and choose an action */
+  if (strcmp(option,"-a")==0)
+    {
+      convert=toMILL;
+    }
+  else
+    if (strcmp(option,"-o")==0)
+      {
+	convert=toOS9;
+      }
+    else
+      {
+	printf("\nERROR! Wrong Option. \n\n");
+	show_help();
+	return(EXIT_FAILURE);
+      }
+
+
+  /* Try to open the source file */
+ if ((source_file=fopen(source_file_name,"rb"))==NULL)
+   {
+     printf("\nERROR! Unable to Open Source File.\n");
+     exit(EXIT_FAILURE);
+   }
+
+  /* Try to read the whole file in memory */
+ if (fread(source_buffer,TOTAL_BYTES,1,source_file) != 1)
+   {
+     printf("\nERROR! Unable to read Source File.\n");
+     exit(EXIT_FAILURE);
+
+   }
+
+  /* execute the requested action */
+ switch(convert)
+  {
+   case toOS9:   convert_to_OS9(source_buffer,destination_buffer,apple_interleave);
+                 break;
+
+   case toMILL: convert_to_apple(source_buffer,destination_buffer,apple_interleave);
+                 break;
+
+   default :     printf("\nERROR! Wrong Option.\n\n");
+	         show_help();
+	         return(EXIT_FAILURE);
+
+  }
+
+ /* Try to open the destination file */
+  if ((destination_file=fopen(destination_file_name,"wb"))==NULL)
+    {
+      printf("\nERROR! Unable to Open Destination File.\n");
+      exit(EXIT_FAILURE);
+    }
+
+  /* Try to write the whole buffer to the destination file */
+  if (fwrite(destination_buffer,TOTAL_BYTES,1,destination_file) != 1)
+    {
+      printf("\nERROR! Unable to Write Destination File Write.\n");
+      exit(EXIT_FAILURE);
+    }
+
+  /* Success! Close all files and exit */
+  fclose(source_file);
+  fclose(destination_file);
+  return(EXIT_SUCCESS);
+}
+
+
+/*
+ * Convert_to_OS9
+ *
+ * Creates a copy, in OS9 RBF format, of the Apple ][ The mill DSK image suppressing the sector interleave and
+ * exchanges track 0 sectors 0 and 0x0f since , in the Apple Os9 "The Mill" disk, sector 0
+ * holds 6502 boot code and sector 0x0f the OS9 "identification sector" that , instead , should
+ * be located at OS9 LSN0 (track 0 sector 0 in our case).
+ */
+
+void convert_to_OS9( char source[TRACKS][SECTORS][BYTES_SECTOR],char dest[TRACKS][SECTORS][BYTES_SECTOR], int interleave[SECTORS])
+{
+  for(int track=0;track<TRACKS;track++)
+    {
+      for(int sector=0;sector<SECTORS;sector++)
+       {
+         for(int byte=0;byte<BYTES_SECTOR;byte++)
+     	  {
+     	    dest[track][sector][byte]=source[track][interleave[sector]][byte];
+	  }
+        }
+    }
+  for(int byte=0;byte<BYTES_SECTOR;byte++)
+    {
+      dest[0][0][byte]=source[0][SECTORS-1][byte];
+      dest[0][SECTORS-1][byte]=source[0][0][byte];
+    }
+ return;
+}
+
+/*
+ * Convert_to_apple
+ *
+ * Creates the Apple ][ The mill DSK image resuming the sector interleave and
+ * exchanging track 0 sectors 0 and 0x0f  (see Convert_to_OS9).
+ * Note that onvert_to_apple assumes that the source file is in OS9 format BUT always
+ * originated from an Apple ][ OS9 "The Mill" image. In other words, to obtain a regular
+ * Apple ][ OS9 "The Mill" image, track 0 sector 0xF should always contain the 6502 boot code.
+ *
+*/
+
+void convert_to_apple( char source[TRACKS][SECTORS][BYTES_SECTOR],char dest[TRACKS][SECTORS][BYTES_SECTOR], int interleave[SECTORS])
+{
+  for(int track=0;track<TRACKS;track++)
+    {
+      for(int sector=0;sector<SECTORS;sector++)
+       {
+         for(int byte=0;byte<BYTES_SECTOR;byte++)
+     	  {
+     	    dest[track][interleave[sector]][byte]=source[track][sector][byte];
+	  }
+        }
+    }
+  for(int byte=0;byte<BYTES_SECTOR;byte++)
+    {
+      dest[0][0][byte]=source[0][SECTORS-1][byte];
+      dest[0][SECTORS-1][byte]=source[0][0][byte];
+    }
+  return;
+}
+
+/*
+ * show_help
+ *
+ * shows the help message
+ */
+void show_help()
+{
+  printf("Syntax : os9_conv <source file> <destination file> <option>\n\n"
+         "Options: -a (convert OS9 dsk image to Apple ][ \"The Mill\" format)\n"
+         "         -o (convert Apple ][ \"The Mill\" OS9 DSK image to OS9 format)\n");
+    return;
+}
+