diff --git a/src/core/file.h b/src/core/file.h
index e9de698..da9f45b 100644
--- a/src/core/file.h
+++ b/src/core/file.h
@@ -155,10 +155,20 @@ public:
     static bool IsAbsolutePath(const TSTRING& in);
 };
 
+class cRiscosPath
+{
+public:
+    static TSTRING AsPosix(const TSTRING& in);
+    static TSTRING AsNative(const TSTRING& in);
+    static bool IsAbsolutePath(const TSTRING& in);
+};
+
 #if IS_DOS_DJGPP
 #define cDevicePath cDosPath
 #elif IS_AROS
 #define cDevicePath cArosPath
+#elif IS_RISCOS
+#define cDevicePath cRiscosPath
 #endif
 
 
diff --git a/src/core/file_unix.cpp b/src/core/file_unix.cpp
index f5bad8a..2bda72b 100644
--- a/src/core/file_unix.cpp
+++ b/src/core/file_unix.cpp
@@ -62,6 +62,10 @@
 #include "core/fsservices.h"
 #include "core/errorutil.h"
 
+#if IS_RISCOS
+#include <unixlib/local.h>
+#endif
+
 ///////////////////////////////////////////////////////////////////////////
 // cFile_i : Insulated implementation for cFile objects.
 ///////////////////////////////////////////////////////////////////////////
@@ -89,7 +93,7 @@ cFile_i::~cFile_i()
         fclose( mpCurrStream );
     mpCurrStream = NULL;
 
-#if IS_AROS
+#if IS_AROS || IS_RISCOS
     if( mFlags & cFile::OPEN_LOCKED_TEMP )
     {
         // unlink this file 
@@ -205,7 +209,7 @@ void cFile::Open( const TSTRING& sFileNameC, uint32 flags )
     }
     mpData->m_fd = fh;
 
-#if !IS_AROS
+#if !IS_AROS && !IS_RISCOS
     if( flags & OPEN_LOCKED_TEMP )
     {
         // unlink this file 
@@ -565,3 +569,65 @@ TSTRING cArosPath::AsNative( const TSTRING& in )
     return out;
 }
 
+
+bool cRiscosPath::IsAbsolutePath(const TSTRING& in)
+{
+    if (in.empty())
+        return false;
+    
+    if (in[0] == '/')
+        return true;
+
+    if (in.find("$") != std::string::npos)
+        return true;
+
+    return false;
+}
+
+// For paths of type SDFS::Volume.$.dir.file
+TSTRING cRiscosPath::AsPosix( const TSTRING& in )
+{
+#if IS_RISCOS
+    if (in[0] == '/')
+    {
+        return in;
+    }
+
+    TSTRING out;
+    char* unixified = __unixify(in.c_str(), 0,0,0,0);
+    if(unixified) 
+    {
+        out.assign(unixified);
+        free(unixified);
+        return out;
+    }
+    return in;
+
+#else
+    return in;
+#endif
+}
+
+TSTRING cRiscosPath::AsNative( const TSTRING& in )
+{
+#if IS_RISCOS
+    if (in[0] != '/')
+    {
+        return in;
+    }
+
+    TSTRING out;
+    int buf_size = in.length() + 100; // examples pad by 100
+    std::vector<char> buf(buf_size);
+    __riscosify(in.c_str(), 0,0, &buf[0], buf_size, 0);
+    if(buf[0])
+    {
+        out.assign(&buf[0]);
+        return out;
+    }
+    return in;
+#else
+    return in;
+#endif
+}
+
diff --git a/src/core/platform.h b/src/core/platform.h
index cfb424f..c58e3c8 100644
--- a/src/core/platform.h
+++ b/src/core/platform.h
@@ -305,7 +305,7 @@
 #define SUPPORTS_SYSLOG             (HAVE_SYSLOG_H && !IS_SKYOS && !IS_RISCOS)
 #define NEEDS_SWAB_IMPL             (IS_CYGWIN || IS_SYLLABLE || IS_ANDROID || IS_SORTIX)
 #define USES_MBLEN                  (!IS_ANDROID && !IS_AROS)
-#define USES_DEVICE_PATH            (IS_AROS || IS_DOS_DJGPP)
+#define USES_DEVICE_PATH            (IS_AROS || IS_DOS_DJGPP || IS_RISCOS)
 #define ICONV_CONST_SOURCE          (IS_MINIX)
 #define SUPPORTS_DIRECT_IO          (IS_LINUX) 
 // Linux is the only platform where direct i/o hashing has been tested & works properly so far.
diff --git a/src/tripwire/twcmdline.cpp b/src/tripwire/twcmdline.cpp
index 5a855d0..39e9577 100644
--- a/src/tripwire/twcmdline.cpp
+++ b/src/tripwire/twcmdline.cpp
@@ -264,22 +264,26 @@ static void util_InitTempDirectory(const cConfigFile& cf)
         temp_directory = "T:";
 #elif IS_DOS_DJGPP
         temp_directory = "/dev/c/temp/";
+#elif IS_RISCOS
+        temp_directory = "/!BOOT/Resources/!Scrap/ScrapDirs/ScrapDir";
 #else
         temp_directory = "/tmp/";
 #endif
     }
 
+#if !IS_RISCOS
     // make sure we have a trailing slash -- thanks Jarno...
     //
     if (*temp_directory.rbegin() != '/')
     {
         temp_directory.push_back('/');
     }
+#endif
 
     // make sure it exists...
     //
 
-#if IS_AROS
+#if IS_AROS || IS_RISCOS
     temp_directory = cDevicePath::AsNative(temp_directory);
 #elif IS_DOS_DJGPP
     temp_directory = cDevicePath::AsPosix(temp_directory);
@@ -295,6 +299,13 @@ static void util_InitTempDirectory(const cConfigFile& cf)
     }
     else
     {
+#if IS_RISCOS
+        if (*temp_directory.rbegin() != '.')
+        {
+            temp_directory.push_back('.');
+        }
+#endif
+
         iFSServices::GetInstance()->SetTempDirName(temp_directory);
     }
 }