diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog
index dafa400a0..025eb8d9e 100644
--- a/nuttx/ChangeLog
+++ b/nuttx/ChangeLog
@@ -601,4 +601,7 @@
 
 0.4.1 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
 	* Added board support fot the ZiLog ez80Acclaim! ez80f910200zco Development Kit.
+	* Fixed several compilation errors in fixed precision math library when built
+	  against toolchains that do not support 64-bit type 'long long'.
+	* Fix errors in some function prototypes in dirent.h
 
diff --git a/nuttx/Documentation/NuttX.html b/nuttx/Documentation/NuttX.html
index 0b9764209..8f816601a 100644
--- a/nuttx/Documentation/NuttX.html
+++ b/nuttx/Documentation/NuttX.html
@@ -8,7 +8,7 @@
   <tr align="center" bgcolor="#e4e4e4">
     <td>
       <h1><big><font color="#3c34ec"><i>NuttX RTOS</i></font></big></h1>
-      <p>Last Updated: December 6, 2008</p>
+      <p>Last Updated: December 7 2008</p>
     </td>
   </tr>
 </table>
@@ -1289,6 +1289,9 @@ buildroot-0.1.2 2007-11-06 &lt;spudmonkey@racsa.co.cr&gt
 <pre><ul>
 nuttx-0.4.1 2008-xx-xx Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
 	* Added board support fot the ZiLog ez80Acclaim! ez80f910200zco Development Kit.
+	* Fixed several compilation errors in fixed precision math library when built
+	  against toolchains that do not support 64-bit type 'long long'.
+	* Fix errors in some function prototypes in dirent.h
 
 pascal-0.1.3 2008-xx-xx Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
 
diff --git a/nuttx/configs/ez80f910200zco/include/board.h b/nuttx/configs/ez80f910200zco/include/board.h
index 28d15541c..e43c337c1 100644
--- a/nuttx/configs/ez80f910200zco/include/board.h
+++ b/nuttx/configs/ez80f910200zco/include/board.h
@@ -43,18 +43,24 @@
 /****************************************************************************
  * Definitions
  ****************************************************************************/
- 
-/* LED pattern definitions */
 
-#define LED_STARTED                 0
-#define LED_HEAPALLOCATE            1
-#define LED_IRQSENABLED             2
-#define LED_STACKCREATED            3
-#define LED_IDLE                    4
-#define LED_INIRQ                   5
-#define LED_ASSERTION               6
-#define LED_SIGNAL                  6
-#define LED_PANIC                   7
+/* LED pattern definitions                 ON                OFF            */
+
+#define LED_STARTED                 0  /*  '0'               N/A            */
+#define LED_HEAPALLOCATE            1  /*  'H'               N/A            */
+#define LED_IRQSENABLED             2  /*  'E'               N/A            */
+#define LED_STACKCREATED            3  /*  'C'               N/A            */
+#define LED_IDLE                    4  /*  'R'               N/A            */
+#define LED_INIRQ                   5  /*  'I'              (previous)      */
+#define LED_ASSERTION               6  /*  'A'              (previous)      */
+#define LED_SIGNAL                  7  /*  'S'              (previous)      */
+#define LED_PANIC                   8  /*  '*'              (previous)      */
+
+/* Button definitions */
+
+#define BUTTON_PB0                 0x01 /* PB0: SW1 Bit 0 of GPIO Port B    */
+#define BUTTON_PB1                 0x02 /* PB1: SW2 Bit 1 of GPIO Port B    */
+#define BUTTON_PB2                 0x04 /* PB2: SW3 Bit 2 of GPIO Port B    */
 
 /****************************************************************************
  * Public Functions
@@ -68,6 +74,11 @@ extern "C" {
 #define EXTERN extern
 #endif
 
+#ifdef CONFIG_ARCH_BUTTONS
+EXTERN void up_buttoninit(void);
+EXTERN ubyte up_buttons(void);
+#endif
+
 #undef EXTERN
 #if defined(__cplusplus)
 }
diff --git a/nuttx/configs/ez80f910200zco/ostest/defconfig b/nuttx/configs/ez80f910200zco/ostest/defconfig
index a5340414c..d244bc68b 100644
--- a/nuttx/configs/ez80f910200zco/ostest/defconfig
+++ b/nuttx/configs/ez80f910200zco/ostest/defconfig
@@ -61,7 +61,9 @@
 # CONFIG_ENDIAN_BIG - Define for big-endian operation
 # CONFIG_ENDIAN_BIG - define if big endian (default is little endian)
 # CONFIG_DRAM_SIZE - Describes the installed DRAM.
-# CONFIG_ARCH_LEDS -  Use LEDs to show state. Unique to z8 board architecture.
+# CONFIG_ARCH_LEDS -  Use LEDs to show state. Unique to board architecture.
+# CONFIG_ARCH_BUTTONS -  Provide button APIs. Unique to board architecture.
+# CONFIG_ARCH_TIMERHOOK - Provide board-specific hooks into periodic timer logic.
 #
 CONFIG_ARCH=z80
 CONFIG_ARCH_Z80=y
@@ -77,7 +79,10 @@ CONFIG_ARCH_IRQPRIO=n
 CONFIG_BOARD_LOOPSPERMSEC=1250
 CONFIG_ENDIAN_BIG=y
 CONFIG_DRAM_SIZE=65536
-CONFIG_ARCH_LEDS=n
+CONFIG_ARCH_LEDS=y
+CONFIG_ARCH_BUTTONS=n
+CONFIG_ARCH_TIMERHOOK=y
+
 #
 # eZ8 specific device driver settings
 #
diff --git a/nuttx/configs/ez80f910200zco/src/Makefile b/nuttx/configs/ez80f910200zco/src/Makefile
index 29273e093..66b05da7d 100644
--- a/nuttx/configs/ez80f910200zco/src/Makefile
+++ b/nuttx/configs/ez80f910200zco/src/Makefile
@@ -43,7 +43,14 @@ CFLAGS		= $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(INCLUDES) $(ARCH
 
 ASRCS		= 
 AOBJS		= $(ASRCS:.S=$(OBJEXT))
-CSRCS		= ez80_lowinit.c ez80_leds.c
+
+CSRCS		= ez80_lowinit.c
+ifeq ($(CONFIG_ARCH_LEDS),y)
+CSRCS		+= ez80_leds.c
+endif
+ifeq ($(CONFIG_ARCH_BUTTONS),y)
+CSRCS		+= ez80_buttons.c
+endif
 COBJS		= $(CSRCS:.c=$(OBJEXT))
 
 SRCS		= $(ASRCS) $(CSRCS)
diff --git a/nuttx/configs/ez80f910200zco/src/ez80_leds.c b/nuttx/configs/ez80f910200zco/src/ez80_leds.c
index 60ba6fdc5..fc18a1d4e 100644
--- a/nuttx/configs/ez80f910200zco/src/ez80_leds.c
+++ b/nuttx/configs/ez80f910200zco/src/ez80_leds.c
@@ -54,6 +54,151 @@
  * Private Data
  ****************************************************************************/
 
+/* 5x7 LED matrix character glyphs.  Each glyph consists of 6 bytes, one
+ * each row and each containing 7 bits of data, one for each column
+ */
+
+#if 0 /* Not used */
+static const ubyte g_chblock[6] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; /* block */
+#endif
+
+static const ubyte g_chspace[]  = 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f};  /* space */
+
+#if 0 /* Not used */
+static const ubyte g_chexclam[] = 0x1b, 0x1b, 0x1b, 0x1b, 0x1b, 0x1f, 0x1b};  /* ! */
+static const ubyte g_chquote[]  = 0x15, 0x15, 0x15, 0x1f, 0x1f, 0x1f, 0x1f};  /* " */
+static const ubyte g_chnum[]    = 0x1f, 0x15, 0x00, 0x15, 0x00, 0x15, 0x1f};  /* # */
+static const ubyte g_chdollar[] = 0x1b, 0x11, 0x0a, 0x11, 0x0a, 0x11, 0x1b};  /* $ */
+static const ubyte g_chpct[]    = 0x1f, 0x1e, 0x15, 0x1b, 0x15, 0x0f, 0x1f};  /* % */
+static const ubyte g_champ[]    = 0x11, 0x0e, 0x0e, 0x11, 0x15, 0x0e, 0x10};  /* & */
+static const ubyte g_chsquote[] = 0x1b, 0x1b, 0x1b, 0x1f, 0x1f, 0x1f, 0x1f};  /* ' */
+static const ubyte g_chlparen[] = 0x1d, 0x1b, 0x17, 0x17, 0x17, 0x1b, 0x1d};  /* ( */
+static const ubyte g_chrparen[] = 0x17, 0x1b, 0x1d, 0x1d, 0x1d, 0x1b, 0x17};  /* ) */
+#endif
+
+static const ubyte g_chast[]    = 0x1f, 0x0a, 0x11, 0x00, 0x11, 0x0a, 0x1f};  /* * */
+
+#if 0 /* Not used */
+static const ubyte g_chplus[]   = 0x1f, 0x1b, 0x1b, 0x00, 0x1b, 0x1b, 0x1f};  /* + */
+static const ubyte g_chcomma[]  = 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1b, 0x17};  /* , */
+static const ubyte g_chhyphen[] = 0x1f, 0x1f, 0x1f, 0x00, 0x1f, 0x1f, 0x1f};  /* - */
+static const ubyte g_chperiod[] = 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1b};  /* . */
+static const ubyte g_chslash[]  = 0x1f, 0x1e, 0x1d, 0x1b, 0x17, 0x0f, 0x1f};  /* / */
+#endif
+
+static const ubyte g_ch0[]      = 0x11, 0x0e, 0x0c, 0x0a, 0x06, 0x0e, 0x11};  /* 0 */
+
+#if 0 /* Not used */
+static const ubyte g_ch1[]      = 0x1b, 0x13, 0x1b, 0x1b, 0x1b, 0x1b, 0x11};  /* 1 */
+static const ubyte g_ch2[]      = 0x11, 0x0e, 0x1d, 0x1b, 0x17, 0x0f, 0x00};  /* 2 */
+static const ubyte g_ch3[]      = 0x11, 0x0e, 0x1e, 0x19, 0x1e, 0x0e, 0x11};  /* 3 */
+static const ubyte g_ch4[]      = 0x0e, 0x0e, 0x0e, 0x10, 0x1e, 0x1e, 0x1e};  /* 4 */
+static const ubyte g_ch5[]      = 0x00, 0x0f, 0x0f, 0x01, 0x1e, 0x0e, 0x11};  /* 5 */
+static const ubyte g_ch6[]      = 0x11, 0x0f, 0x0f, 0x01, 0x0e, 0x0e, 0x11};  /* 6 */
+static const ubyte g_ch7[]      = 0x00, 0x1e, 0x1e, 0x1d, 0x1b, 0x1b, 0x1b};  /* 7 */
+static const ubyte g_ch8[]      = 0x11, 0x0e, 0x0e, 0x11, 0x0e, 0x0e, 0x11};  /* 8 */
+static const ubyte g_ch9[]      = 0x11, 0x0e, 0x0e, 0x10, 0x1e, 0x1d, 0x1b};  /* 9 */
+static const ubyte g_chcolon[]  = 0x1f, 0x1f, 0x1b, 0x1f, 0x1b, 0x1f, 0x1f};  /* : */
+static const ubyte g_shsemi[]   = 0x1f, 0x1f, 0x1b, 0x1f, 0x1b, 0x17, 0x1f};  /* ; */
+static const ubyte g_chlt[]     = 0x1d, 0x1b, 0x17, 0x0f, 0x17, 0x1b, 0x1d};  /* < */
+static const ubyte g_cheq[]     = 0x1f, 0x1f, 0x00, 0x1f, 0x00, 0x1f, 0x1f};  /* = */
+static const ubyte g_chgt[]     = 0x17, 0x1b, 0x1d, 0x1e, 0x1d, 0x1b, 0x17};  /* > */
+static const ubyte g_chquest[]  = 0x11, 0x0e, 0x0d, 0x1b, 0x1b, 0x1f, 0x1b};  /* ? */
+static const ubyte g_chat[]     = 0x11, 0x0a, 0x04, 0x04, 0x05, 0x0a, 0x11};  /* @ */
+#endif
+
+static const ubyte g_chA[]      = 0x11, 0x0e, 0x0e, 0x0e, 0x00, 0x0e, 0x0e};  /* A */
+
+#if 0 /* Not used */
+static const ubyte g_chB[]      = 0x01, 0x0e, 0x0e, 0x01, 0x0e, 0x0e, 0x01};  /* B */
+#endif
+
+static const ubyte g_chC[]      = 0x11, 0x0e, 0x0f, 0x0f, 0x0f, 0x0e, 0x11};  /* C */
+
+s#if 0 /* Not used */
+tatic const ubyte g_chD[]      = 0x01, 0x0e, 0x0e, 0x0e, 0x0e, 0x0e, 0x01};  /* D */
+#endif
+
+static const ubyte g_chE[]      = 0x00, 0x0f, 0x0f, 0x01, 0x0f, 0x0f, 0x00};  /* E */
+
+#if 0 /* Not used */
+static const ubyte g_chF[]      = 0x00, 0x0f, 0x0f, 0x01, 0x0f, 0x0f, 0x0f};  /* F */
+static const ubyte g_chG[]      = 0x11, 0x0e, 0x0f, 0x08, 0x0e, 0x0e, 0x11};  /* G */
+#endif
+
+static const ubyte g_chH[]      = 0x0e, 0x0e, 0x0e, 0x00, 0x0e, 0x0e, 0x0e};  /* H */
+static const ubyte g_chI[]      = 0x00, 0x1b, 0x1b, 0x1b, 0x1b, 0x1b, 0x00};  /* I */
+
+#if 0 /* Not used */
+static const ubyte g_chJ[]      = 0x00, 0x1d, 0x1d, 0x1d, 0x0d, 0x0d, 0x13};  /* J */
+static const ubyte g_chK[]      = 0x0e, 0x0d, 0x0b, 0x07, 0x0b, 0x0d, 0x0e};  /* K */
+static const ubyte g_chL[]      = 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x00};  /* L */
+static const ubyte g_chM[]      = 0x0e, 0x04, 0x0a, 0x0a, 0x0e, 0x0e, 0x0e};  /* M */
+static const ubyte g_chN[]      = 0x0e, 0x0e, 0x06, 0x0a, 0x0c, 0x0e, 0x0e};  /* N */
+static const ubyte g_chO[]      = 0x11, 0x0e, 0x0e, 0x0e, 0x0e, 0x0e, 0x11};  /* O */
+static const ubyte g_chP[]      = 0x01, 0x0e, 0x0e, 0x01, 0x0f, 0x0f, 0x0f};  /* P */
+static const ubyte g_chQ[]      = 0x11, 0x0e, 0x0e, 0x0e, 0x0a, 0x0c, 0x10};  /* Q */
+#endif
+
+static const ubyte g_chR[]      = 0x01, 0x0e, 0x0e, 0x01, 0x0b, 0x0d, 0x0e};  /* R */
+static const ubyte g_chS[]      = 0x11, 0x0e, 0x0f, 0x11, 0x1e, 0x0e, 0x11};  /* S */
+
+#if 0 /* Not used */
+static const ubyte g_chT[]      = 0x00, 0x1b, 0x1b, 0x1b, 0x1b, 0x1b, 0x1b};  /* T */
+static const ubyte g_chU[]      = 0x0e, 0x0e, 0x0e, 0x0e, 0x0e, 0x0e, 0x11};  /* U */
+static const ubyte g_chV[]      = 0x0e, 0x0e, 0x0e, 0x0e, 0x0e, 0x15, 0x1b};  /* V */
+static const ubyte g_chW[]      = 0x0e, 0x0e, 0x0a, 0x0a, 0x0a, 0x0a, 0x15};  /* W */
+static const ubyte g_chX[]      = 0x0e, 0x0e, 0x15, 0x1b, 0x15, 0x0e, 0x0e};  /* X */
+static const ubyte g_chY[]      = 0x0e, 0x0e, 0x15, 0x1b, 0x1b, 0x1b, 0x1b};  /* Y */
+static const ubyte g_chZ[]      = 0x00, 0x1e, 0x1d, 0x1b, 0x17, 0x0f, 0x00};  /* Z */
+static const ubyte g_chlbrack[] = 0x03, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x03};  /* [ */
+static const ubyte g_chbslash[] = 0x1f, 0x0f, 0x17, 0x1b, 0x1d, 0x1e, 0x1f};  /* backslash */
+static const ubyte g_chrbrack[] = 0x1c, 0x1e, 0x1e, 0x1e, 0x1e, 0x1e, 0x1c};  /* ] */
+static const ubyte g_chcaret[]  = 0x1b, 0x15, 0x0e, 0x1f, 0x1f, 0x1f, 0x1f};  /* ^ */
+static const ubyte g_chunder[]  = 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x00};  /* _ */
+static const ubyte g_chgrave[]  = 0x1b, 0x1b, 0x1b, 0x1f, 0x1f, 0x1f, 0x1f};  /* ' */
+static const ubyte g_cha[]      = 0x1f, 0x1f, 0x19, 0x16, 0x16, 0x16, 0x18};  /* a */
+static const ubyte g_chb[]      = 0x17, 0x17, 0x11, 0x16, 0x16, 0x16, 0x11};  /* b */
+static const ubyte g_chc[]      = 0x1f, 0x1f, 0x19, 0x16, 0x17, 0x16, 0x19};  /* c */
+static const ubyte g_chd[]      = 0x1e, 0x1e, 0x18, 0x16, 0x16, 0x16, 0x18};  /* d */
+static const ubyte g_che[]      = 0x1f, 0x1f, 0x19, 0x10, 0x17, 0x16, 0x19};  /* e */
+static const ubyte g_chf[]      = 0x1d, 0x1a, 0x1b, 0x11, 0x1b, 0x1b, 0x1b};  /* f */
+static const ubyte g_chg[]      = 0x1f, 0x19, 0x16, 0x16, 0x18, 0x16, 0x19};  /* g */
+static const ubyte g_chh[]      = 0x17, 0x17, 0x11, 0x16, 0x16, 0x16, 0x16};  /* h */
+static const ubyte g_chi[]      = 0x1f, 0x1f, 0x1b, 0x1f, 0x1b, 0x1b, 0x1b};  /* i */
+static const ubyte g_chj[]      = 0x1f, 0x1d, 0x1f, 0x1d, 0x1d, 0x1d, 0x13};  /* j */
+static const ubyte g_chk[]      = 0x17, 0x17, 0x15, 0x13, 0x13, 0x15, 0x16};  /* k */
+static const ubyte g_chl[]      = 0x1b, 0x1b, 0x1b, 0x1b, 0x1b, 0x1b, 0x1b};  /* l */
+static const ubyte g_chm[]      = 0x1f, 0x1f, 0x05, 0x0a, 0x0a, 0x0a, 0x0a};  /* m */
+static const ubyte g_chn[]      = 0x1f, 0x1f, 0x11, 0x16, 0x16, 0x16, 0x16};  /* n */
+static const ubyte g_cho[]      = 0x1f, 0x1f, 0x19, 0x16, 0x16, 0x16, 0x19};  /* o */
+static const ubyte g_chp[]      = 0x1f, 0x11, 0x16, 0x16, 0x11, 0x17, 0x17};  /* p */
+static const ubyte g_chq[]      = 0x1f, 0x18, 0x16, 0x16, 0x18, 0x1e, 0x1e};  /* q */
+static const ubyte g_chr[]      = 0x1f, 0x1f, 0x11, 0x16, 0x17, 0x17, 0x17};  /* r */
+static const ubyte g_chs[]      = 0x1f, 0x1f, 0x18, 0x17, 0x19, 0x1e, 0x11};  /* s */
+static const ubyte g_cht[]      = 0x1f, 0x1f, 0x1b, 0x11, 0x1b, 0x1b, 0x1b};  /* t */
+static const ubyte g_chu[]      = 0x1f, 0x1f, 0x16, 0x16, 0x16, 0x16, 0x18};  /* u */
+static const ubyte g_chv[]      = 0x1f, 0x1f, 0x16, 0x16, 0x16, 0x16, 0x19};  /* v */
+static const ubyte g_chw[]      = 0x1f, 0x1f, 0x0a, 0x0a, 0x0a, 0x0a, 0x15};  /* w */
+static const ubyte g_chx[]      = 0x1f, 0x1f, 0x0e, 0x15, 0x1b, 0x15, 0x0e};  /* x */
+static const ubyte g_chy[]      = 0x1f, 0x1a, 0x1a, 0x1a, 0x1d, 0x1b, 0x17};  /* y */
+static const ubyte g_cha[]      = 0x1f, 0x1f, 0x10, 0x1d, 0x1b, 0x17, 0x10};  /* z */
+static const ubyte g_chlbrace[] = 0x1d, 0x1b, 0x1b, 0x17, 0x1b, 0x1b, 0x1d};  /* { */
+static const ubyte g_chvbar[]   = 0x1b, 0x1b, 0x1b, 0x1f, 0x1b, 0x1b, 0x1b};  /* | */
+static const ubyte g_chrbrace[] = 0x17, 0x1b, 0x1b, 0x1d, 0x1b, 0x1b, 0x17};  /* } */
+static const ubyte g_chtilde[]  = 0x1f, 0x1a, 0x15, 0x1f, 0x1f, 0x1f, 0x1f};  /* ~ */
+#endif
+
+/* The current and previously selected glyph */
+
+static const ubyte *g_currglyph = g_chspace;
+static const ubyte *g_prevglyph = g_chspace;
+
+/* Current row and column */
+
+static ubyte g_anodecol         = 1;
+static ubyte g_cathoderow       = 0;
+
 /****************************************************************************
  * Private Functions
  ****************************************************************************/
@@ -69,6 +214,10 @@
 #ifdef CONFIG_ARCH_LEDS
 void up_ledinit(void)
 {
+  g_currglyph  = g_chspace;
+  g_prevglyph  = g_chspace;
+  g_anodecol   = 1;
+  g_cathoderow = 0;
 }
 
 /****************************************************************************
@@ -77,6 +226,50 @@ void up_ledinit(void)
 
 void up_ledon(int led)
 {
+  FAR const char *tmp = g_currglyph;
+  switch (led)
+    {
+    case LED_STARTED:
+      g_currglyph = g_ch0;
+      break;
+
+    case LED_HEAPALLOCATE:
+      g_currglyph = g_chH;
+      break;
+
+    case LED_IRQSENABLED:
+      g_currglyph = g_chE;
+      break;
+
+    case LED_STACKCREATED:
+      g_currglyph = g_chC;
+      break;
+
+    case LED_IDLE:
+      g_currglyph = g_chR;
+      break;
+
+    case LED_INIRQ:
+      g_currglyph = g_chI;
+      break;
+
+    case LED_ASSERTION:
+      g_currglyph = g_chA;
+      break;
+
+    case LED_SIGNAL:
+      g_currglyph = g_chS;
+      break;
+
+    case LED_PANIC:
+      g_currglyph = g_chast;
+      break;
+
+    default:
+      return;    
+    }
+
+  g_prevglyph = tmp;
 }
 
 /****************************************************************************
@@ -85,5 +278,26 @@ void up_ledon(int led)
 
 void up_ledoff(int led)
 {
+  g_currglyph = g_prevglyph;
 }
+
+/****************************************************************************
+ * Name: up_timerhook
+ ****************************************************************************/
+
+ void up_timerhook(void)
+{
+  if (g_cathoderow > 6)
+    {
+      g_anodecol   = 1;
+      g_cathoderow = 0;
+    }
+
+  ez80_putmmreg8(g_anodecol, EZ80_LEDANODE);
+  ez80_putmmreg8(g_currglyph[g_cathoderow], EZ80_LEDCATHODE);
+
+  g_cathoderow++;
+  g_anodecol = g_anodecol << 1;
+}
+
 #endif /* CONFIG_ARCH_LEDS */
diff --git a/nuttx/configs/ez80f910200zco/src/ez80f910200zco.h b/nuttx/configs/ez80f910200zco/src/ez80f910200zco.h
new file mode 100644
index 000000000..bb8cc9b4e
--- /dev/null
+++ b/nuttx/configs/ez80f910200zco/src/ez80f910200zco.h
@@ -0,0 +1,145 @@
+/****************************************************************************
+ * arch/ez80f910200zco/src/ez80f910200zco.h
+ *
+ *   Copyright (C) 2008 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.
+ *
+ ****************************************************************************/
+
+#ifndef _CONFIGS_EZ80F910200ZCO_SRC_EZ80F910200ZCO+H
+#define _CONFIGS_EZ80F910200ZCO_SRC_EZ80F910200ZCO+H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* Memory map */
+
+#define EZ80_ONCHIPFLASH  0x000000 /* CS0: 256Kb of on-chip flash */
+#define EZ80_OFFCHIPFLASH 0x400000 /* CS0: Off chip flash (Up to 4Mb-256Kb) */
+#define EZ80_LEDGPIOCNTRL 0x800000 /* CS2: (See below) */
+#define EZ80_PLTFMSRAM    0xb80000 /* CS2: Platform SRAM (512Kb) */
+#define EZ80_MODULESRAM   0xc00000 /* CS1: Module SRAM (up to 2Mb) */
+#define EZ80_ONCHIPFLASH  0xffe000 /* On-chip SRAM (8Kb) */
+
+/* LED and port emulation memory register addresses */
+
+#define EZ80_LEDANODE     0x800000 /* WR: LED anode/GPIO port output control */
+#define EZ80_GPIOCNTRL    EZ80_LEDANODE
+#define EZ80_LEDCATHODE   0x800001 /* WR: LED cathode/Modem/Trig */
+#define EZ80_MODEM        EZ80_LEDCATHODE
+#define EZ80_TRIGGERS     EZ80_LEDCATHODE
+#define EZ80_GPIODATA     0x800002 /* RD/WR: GPIO data */
+
+#define getmmreg(a)       (*(ubyte*)(a))
+#define putmmreg(v,a)     (*(ubyte*)(a) = (v))
+
+/* LED anode/GPIO port output control bit definitions */
+
+#define EZ80_ANODECOL1    0x01
+#define EZ80_ANODECOL2    0x02
+#define EZ80_ANODECOL3    0x04
+#define EZ80_ANODECOL4    0x08
+#define EZ80_ANODECOL5    0x10
+#define EZ80_ANODECOL6    0x20
+#define EZ80_ANODECOL7    0x40
+#define EZ80_GPIOOUTPUT   0x80
+
+/* LED cathode/Modem/Trig bit definitions */
+
+#define EZ80_CATHODEROW5  0x01
+#define EZ80_CATHODEROW4  0x02
+#define EZ80_CATHODEROW3  0x04
+#define EZ80_CATHODEROW2  0x08
+#define EZ80_CATHODEROW1  0x10
+#define EZ80_MODEMRESET   0x20
+#define EZ80_TRIG1        0x40
+#define EZ80_TRIG2        0x80
+
+/* GPIO data bit definitions */
+
+#define EZ80_GPIOD0       0x01
+#define EZ80_GPIOD1       0x02
+#define EZ80_GPIOD2       0x04
+#define EZ80_GPIOD3       0x08
+#define EZ80_GPIOD4       0x10
+#define EZ80_GPIOD5       0x20
+#define EZ80_GPIOD6       0x40
+#define EZ80_GPIOD7       0x80
+
+/* Modem Signals:
+ *
+ * DCD:
+ *   The Data Carrier Detect (DCD) signal at D1 indicates that a good carrier
+ *   signal is being received from the remove mode.
+ * RX:
+ *   The RX signal at D2 indicates that data is received from the modem.
+ * DTR:
+ *   The Data Terminal Ready (DTR) signal at D3 informs the modem that the PC
+ *   is ready.
+ * TX:
+ *   The TX signal at D4 indicates that data is tranmitted to the modem.
+ */
+ 
+ /* Push buttons:
+  *
+  * PB0   SW1 Bit 0 of GPIO Port B
+  * PB1   SW2 Bit 1 of GPIO Port B
+  * PB2   SW3 Bit 2 of GPIO Port B
+  * RESET SW4
+  */
+
+#define EZ80_PB0_IRQ EZ80_PORTB0_IRQ  /* Vector Oxa0 */
+#define EZ80_PB1_IRQ EZ80_PORTB1_IRQ  /* Vector Oxa4 */
+#define EZ80_PB2_IRQ EZ80_PORTB2_IRQ  /* Vector Oxa8 */
+
+  
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif  /* _CONFIGS_EZ80F910200ZCO_SRC_EZ80F910200ZCO+H */