diff --git a/src/sys/lib/memset.c b/src/sys/lib/memset.c
new file mode 100644
index 0000000..af704f5
--- /dev/null
+++ b/src/sys/lib/memset.c
@@ -0,0 +1,87 @@
+/*****************************************************************************************
+ Copyright (c) 2002 The UbixOS Project
+ All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are
+permitted provided that the following conditions are met:
+
+Redistributions of source code must retain the above copyright notice, this list of
+conditions, the following disclaimer and the list of authors.  Redistributions in binary
+form must reproduce the above copyright notice, this list of conditions, the following
+disclaimer and the list of authors in the documentation and/or other materials provided
+with the distribution. Neither the name of the UbixOS Project nor the names of its
+contributors may be used to endorse or promote products derived from this software
+without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ $Id$
+
+*****************************************************************************************/
+
+#include <string.h>
+
+#define wsize   sizeof(uInt)
+#define wmask   (wsize - 1)
+#define VAL     c0
+#define WIDEVAL c
+
+void *memset(void *dst0, int c0, size_t length) {
+  size_t t;
+  uInt c;
+  uInt8 *dst;
+
+  dst = dst0;
+
+        if (length < 3 * wsize) {
+                while (length != 0) {
+                        *dst++ = VAL;
+                        --length;
+                }
+                return(dst0);
+        }
+
+        if ((c = (uInt8)c0) != 0) {    /* Fill the word. */
+                c = (c << 8) | c;       /* u_int is 16 bits. */
+                c = (c << 16) | c;      /* u_int is 32 bits. */
+        }
+
+        /* Align destination by filling in bytes. */
+        if ((t = (long)dst & wmask) != 0) {
+                t = wsize - t;
+                length -= t;
+                do {
+                        *dst++ = VAL;
+                } while (--t != 0);
+        }
+
+        /* Fill words.  Length was >= 2*words so we know t >= 1 here. */
+        t = length / wsize;
+        do {
+                *(u_int *)dst = WIDEVAL;
+                dst += wsize;
+        } while (--t != 0);
+
+        /* Mop up trailing bytes, if any. */
+        t = length & wmask;
+        if (t != 0)
+                do {
+                        *dst++ = VAL;
+                } while (--t != 0);
+        return(dst0);
+  }
+
+
+/***
+ $Log$
+ END
+ ***/
+