diff --git a/arch/z80/src/common/up_internal.h b/arch/z80/src/common/up_internal.h
index cb1a4d2b01..9aab1e7a91 100644
--- a/arch/z80/src/common/up_internal.h
+++ b/arch/z80/src/common/up_internal.h
@@ -1,7 +1,7 @@
 /****************************************************************************
  * arch/z80/src/common/up_internal.h
  *
- *   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2008, 2009 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -140,6 +140,10 @@ EXTERN void lowconsole_init(void);
 # define lowconsole_init()
 #endif
 
+/* Low level string output */
+
+extern void up_puts(const char *str);
+
 /* Defined in up_timerisr.c */
 
 EXTERN void up_timerinit(void);
diff --git a/arch/z80/src/common/up_puts.c b/arch/z80/src/common/up_puts.c
new file mode 100644
index 0000000000..1221a24666
--- /dev/null
+++ b/arch/z80/src/common/up_puts.c
@@ -0,0 +1,76 @@
+/****************************************************************************
+ * arch/z80/src/common/up_puts.c
+ *
+ *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/types.h>
+#include <nuttx/arch.h>
+
+#include "up_internal.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_puts
+ *
+ * Description:
+ *   This is a low-level helper function used to support debug.
+ *
+ ****************************************************************************/
+
+void up_puts(const char *str)
+{
+  while (*str)
+    {
+      up_putc(*str++);
+    }
+}
diff --git a/arch/z80/src/ez80/Make.defs b/arch/z80/src/ez80/Make.defs
index d729a84df0..3f94825aa5 100644
--- a/arch/z80/src/ez80/Make.defs
+++ b/arch/z80/src/ez80/Make.defs
@@ -1,7 +1,7 @@
 ############################################################################
 # arch/z80/src/ez80/Make.defs
 #
-#   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+#   Copyright (C) 2008, 2009 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
 #
 # Redistribution and use in source and binary forms, with or without
@@ -41,7 +41,7 @@ CMN_CSRCS	= up_initialize.c up_allocateheap.c up_createstack.c \
 		  up_releasestack.c up_interruptcontext.c up_blocktask.c \
 		  up_unblocktask.c up_exit.c up_releasepending.c \
 		  up_reprioritizertr.c up_idle.c up_assert.c up_doirq.c \
-		  up_mdelay.c up_udelay.c up_usestack.c
+		  up_mdelay.c up_udelay.c up_usestack.c up_puts.c
 
 CHIP_ASRCS	= ez80_startup.asm ez80_io.asm ez80_irqsave.asm \
 		  ez80_saveusercontext.asm ez80_restorecontext.asm