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diff --git a/misc/Obsoleted/arch/8051/src/up_internal.h b/misc/Obsoleted/arch/8051/src/up_internal.h
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+/**************************************************************************
+ * arch/8051/src/up_internal.h
+ *
+ *   Copyright (C) 2007, 2009, 2011, 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 __ARCH_8051_SRC_UP_INTERNAL_H
+#define __ARCH_8051_SRC_UP_INTERNAL_H
+
+/**************************************************************************
+ * Included Files
+ **************************************************************************/
+
+#include <nuttx/config.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <arch/irq.h>
+
+#if defined(CONFIG_ARCH_BOARD_PJRC_87C52)
+# include <arch/board/pjrc.h>
+#else
+# warning "805x board not recognized"
+#endif
+
+/**************************************************************************
+ * Public Definitions
+ **************************************************************************/
+
+/**************************************************************************
+ * Public Types
+ **************************************************************************/
+
+/**************************************************************************
+ * Public Variables
+ **************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/* This is the top of the stack containing the interrupt
+ * stack frame.  It is set when processing an interrupt.  It
+ * is also cleared when the interrupt returns so this can
+ * also be used like a boolean indication that we are in an
+ * interrupt.
+ */
+
+extern volatile uint8_t g_irqtos;
+
+/* Registers are saved in the following global array during
+ * interrupt processing.  If a context switch is performed
+ * during the interrupt handling, these registers will be
+ * copied into the TCB again (NOTE:  We could save a copy
+ * if the interrupt handling logic saved the registers
+ * directly into (struct tcb_s*)g_readytorun.head->xcp.regs).
+ */
+
+extern uint8_t g_irqregs[REGS_SIZE];
+
+/* If during execution of an interrup handler, a context
+ * switch must be performed, the follwing will be set to
+ * to that address of the relevant context structure.  The
+ * actual switch will be deferred until the time that the
+ * the interrupt exits.
+ */
+
+extern FAR struct xcptcontext *g_irqcontext;
+
+/* It is faster to look up 8-bit shifts in this table than
+ * to comput them.
+ */
+
+extern const uint8_t g_ntobit[8];
+
+#endif /* __ASSEMBLY */
+
+/**************************************************************************
+ * Public Function Prototypes
+ **************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#if CONFIG_MM_REGIONS > 1
+void up_addregion(void);
+#endif
+void up_delay(uint8_t milliseconds) __naked;
+void up_irqinitialize(void);
+void up_restorecontext(FAR struct xcptcontext *context) _naked;
+void up_restoreregisters(FAR uint8_t *regs) _naked;
+uint8_t up_savecontext(FAR struct xcptcontext *context) __naked;
+void up_saveregisters(FAR uint8_t *regs) _naked;
+void up_saveirqcontext(FAR struct xcptcontext *context);
+void up_timer_initialize(void);
+
+/* Defined in up_debug.c */
+
+#if defined(CONFIG_ARCH_8051_BRINGUP)
+void up_puthex(uint8_t hex) __naked;
+void up_puthex16(int hex) __naked;
+void up_putnl(void) __naked;
+void up_puts(__code char *ptr);
+void up_showsp(uint8_t ch) __naked;
+#endif
+
+#if defined(CONFIG_FRAME_DUMP) && defined(CONFIG_ARCH_8051_BRINGUP)
+void up_dumpstack(void);
+void up_dumpframe(FAR struct xcptcontext *context);
+#else
+# define up_dumpstack()
+# define up_dumpframe(x)
+#endif
+
+/* Defined in board/up_leds.c */
+
+#ifdef CONFIG_ARCH_LEDS
+void board_led_initialize(void);
+void board_led_on(uint8_t led);
+void board_led_off(uint8_t led);
+#else
+# define board_led_initialize()
+# define board_led_on(led)
+# define board_led_off(led)
+#endif
+
+#endif /* __ASSEMBLY */
+#endif /* __ARCH_8051_SRC_UP_INTERNAL_H */