diff --git a/configs/pjrc-8051/Kconfig b/configs/pjrc-8051/Kconfig
deleted file mode 100644
index 921bc732ce8..00000000000
--- a/configs/pjrc-8051/Kconfig
+++ /dev/null
@@ -1,7 +0,0 @@
-#
-# For a description of the syntax of this configuration file,
-# see misc/tools/kconfig-language.txt.
-#
-
-if ARCH_BOARD_PJRC_87C52
-endif
diff --git a/configs/pjrc-8051/Make.defs b/configs/pjrc-8051/Make.defs
deleted file mode 100644
index d4716dedcad..00000000000
--- a/configs/pjrc-8051/Make.defs
+++ /dev/null
@@ -1,170 +0,0 @@
-############################################################################
-# configs/pjrc-8051/Make.defs
-#
-#   Copyright (C) 2007, 2008, 2012 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.
-#
-############################################################################
-
-include ${TOPDIR}/.config
-include ${TOPDIR}/tools/Config.mk
-
-# These are the directories where the SDCC toolchain is installed.  NOTE
-# that short 8.3 path names are used in order to avoid spaces.  On my machine
-# I have:
-#
-# C:\PROGRA~1\ = C:\Profram Files\
-# C:\PROGRA~2\ = C:\Program Files (x86)\
-#
-# Your PC may be configured differently.
-
-ifeq ($(CONFIG_WINDOWS_NATIVE),y)
-  SDCC_INSTALLDIR = C:\PROGRA~2\SDCC
-  SDCC_BINDIR = $(SDCC_INSTALLDIR)\bin
-  SDCC_LIBDIR =  $(SDCC_INSTALLDIR)\lib\large-stack-auto
-else
-  SDCC_INSTALLDIR = /usr/local
-  SDCC_BINDIR = $(SDCC_INSTALLDIR)/bin
-  SDCC_LIBDIR = $(SDCC_INSTALLDIR)/share/sdcc/lib/large-stack-auto
-endif
-
-CROSSDEV =
-CC = sdcc
-CPP = sdcpp
-LD = sdld
-AS = sdas8051
-AR = sdar -r
-
-IRAM_SIZE = 0x100
-DEF_STACK_BASE = 0x24
-
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  ARCHOPTIMIZATION = --debug
-else
-  ARCHOPTIMIZATION =
-endif
-
-ARCHCPUFLAGS = -mmcs51 --stack-auto --model-large --int-long-reent --float-reent
-ARCHPICFLAGS =
-ARCHWARNINGS =
-ARCHDEFINES =
-ARCHINCLUDES = -I. -I$(TOPDIR)/include
-
-CFLAGS = $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES)
-CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES)
-AFLAGS = -x -j -g -l -s -p
-
-SDCCLIB = libsdcc.lib
-
-ASMEXT = .asm
-OBJEXT = .rel
-LIBEXT = .lib
-EXEEXT = .hex
-
-# Custom ASSEMBLE definition.  The most common toolchain, GCC, uses the
-# compiler to assemble files because this has the advantage of running the C
-# Pre-Processor against.  This is not possible with other SDCC; we need to
-# define AS and over-ride the common definition in order to use the assembler
-# directly.
-
-define ASSEMBLE
-	@echo "AS: $1"
-	@$(AS) $(AFLAGS) $1
-endef
-
-# Custom CLEAN definition
-
-ifeq ($(CONFIG_WINDOWS_NATIVE),y)
-define CLEAN
-	$(Q) if exist *.o (del /f /q *.o)
-	$(Q) if exist *.asm (del /f /q *.asm)
-	$(Q) if exist *.rel (del /f /q *.rel)
-	$(Q) if exist *.lst (del /f /q *.lst)
-	$(Q) if exist *.rst (del /f /q *.rst)
-	$(Q) if exist *.sym (del /f /q *.sym)
-	$(Q) if exist *.adb (del /f /q *.adb)
-	$(Q) if exist *.lnk (del /f /q *.lnk)
-	$(Q) if exist *.map (del /f /q *.map)
-	$(Q) if exist *.mem (del /f /q *.mem)
-	$(Q) if exist *.hex (del /f /q *.hex)
-	$(Q) if exist *.cmd (del /f /q *.cmd)
-endef
-else
-define CLEAN
-	$(Q) rm -f *.o *.asm *.rel *.lst *.rst *.sym *.adb *.lnk *.map *.mem *.hex *.cmd
-endef
-endif
-
-# Windows native host tool definitions
-
-ifeq ($(CONFIG_WINDOWS_NATIVE),y)
-  HOSTCC = mingw32-gcc.exe
-  HOSTINCLUDES = -I.
-  HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
-  HOSTLDFLAGS =
-  HOSTEXEEXT = .exe
-
-  # Windows-native host tools
-
-  MKDEP = $(TOPDIR)\tools\mkdeps.exe --winnative
-
-  # Use NTFS links or directory copies
-
-ifeq ($(CONFIG_WINDOWS_MKLINK),y)
-  DIRLINK = $(TOPDIR)$(DELIM)tools$(DELIM)link.bat
-else
-  DIRLINK = $(TOPDIR)$(DELIM)tools$(DELIM)copydir.bat
-endif
-DIRUNLINK = $(TOPDIR)$(DELIM)tools$(DELIM)unlink.bat
-
-else
-
-# Linux/Cygwin host tool definitions
-
-  HOSTCC = gcc
-  HOSTINCLUDES = -I.
-  HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
-  HOSTLDFLAGS =
-
-  # This is the tool to use for dependencies (i.e., none)
-
-  MKDEP = $(TOPDIR)$(DELIM)tools$(DELIM)mknulldeps.sh
-
-  # SDCC for Linux, OSX, or Cygwin understands symbolic links.  Windows SDCC
-  # running under Cygwin does not
-
-ifeq ($(WINTOOL),y)
-  DIRLINK = $(TOPDIR)$(DELIM)tools$(DELIM)copydir.sh
-else
-  DIRLINK = $(TOPDIR)$(DELIM)tools$(DELIM)link.sh
-endif
-DIRUNLINK = $(TOPDIR)$(DELIM)tools$(DELIM)unlink.sh
-
-endif
diff --git a/configs/pjrc-8051/README.txt b/configs/pjrc-8051/README.txt
deleted file mode 100644
index 1343ec9db62..00000000000
--- a/configs/pjrc-8051/README.txt
+++ /dev/null
@@ -1,54 +0,0 @@
-pjrc-8051 README
-^^^^^^^^^^^^^^^^
-
-This port uses the PJRC 87C52 development system and the SDCC toolchain.
-
-The PJRC 87C52 development system can be obtained from http://www.pjrc.com/.
-
-The SDCC toolchain is available from http://sdcc.sourceforge.net/.  All
-testing has been performed using verison 2.6.0 of the SDDC toolchain.
-
-Building the SDCC toolchain
-^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-The SDCC toolchain is built with the standard configure/make/make install
-sequence.  However, some special actions are required to generate libraries
-compatible with this build.  First start with the usual steps
-
-  download
-  unpack
-  cd sdcc
-  ./configure
-  make
-
-But before installing, we need to apply a patch to the SDCC 2.6.0 source.
-WARNING:  This patch is specific to the particular combination of CFLAGS
-that are used in the compilation.  If you change Make.defs, then you will
-likely have to change the patch as well.
-
-  Apply sdcc-2.6.0.patch
-  cd sdcc/device/lib
-  make model-mcs51-stack-auto
-
-Then
-
-  cd sdcc
-  make install
-
-Status
-^^^^^^
-
-On December 9, 2012, I made updates so that the 8051 port could use the
-newest SDCC toolchain (a pre-3.2.1 at that time).  However, when I attempted
-to build the PJRC-8051 configuration, I got type incompatibility errors
-from sched/os_bringup.c.  From what I gather by googling, this is a compiler
-bug related to the --stack-auto option.
-
-I have not been successful working around those bugs and I believe that
-these are 8051-related bugs in the SDCC toolchain.  This needs to be
-revisited with a later version of SDCC.
-
-This configuration was last successfully built and tested with a ca.
-2.6.0 SDCC release.  Support for that older toolchain was removed in
-NuttX revision -r5423.  If you wanted to used those older toolchains,
-you would need to revert to a pre-r5423 revision.
diff --git a/configs/pjrc-8051/defconfig b/configs/pjrc-8051/defconfig
deleted file mode 100644
index 68a3a68eafa..00000000000
--- a/configs/pjrc-8051/defconfig
+++ /dev/null
@@ -1,577 +0,0 @@
-#
-# Automatically generated file; DO NOT EDIT.
-# Nuttx/ Configuration
-#
-
-#
-# Build Setup
-#
-# CONFIG_EXPERIMENTAL is not set
-CONFIG_DEFAULT_SMALL=y
-CONFIG_HOST_LINUX=y
-# CONFIG_HOST_OSX is not set
-# CONFIG_HOST_WINDOWS is not set
-# CONFIG_HOST_OTHER is not set
-
-#
-# Build Configuration
-#
-# CONFIG_APPS_DIR="../apps"
-# CONFIG_BUILD_2PASS is not set
-
-#
-# Binary Output Formats
-#
-# CONFIG_RRLOAD_BINARY is not set
-# CONFIG_INTELHEX_BINARY is not set
-# CONFIG_MOTOROLA_SREC is not set
-# CONFIG_RAW_BINARY is not set
-
-#
-# Customize Header Files
-#
-# CONFIG_ARCH_STDBOOL_H is not set
-# CONFIG_ARCH_MATH_H is not set
-# CONFIG_ARCH_FLOAT_H is not set
-# CONFIG_ARCH_STDARG_H is not set
-
-#
-# Debug Options
-#
-# CONFIG_DEBUG is not set
-# CONFIG_ARCH_HAVE_STACKCHECK is not set
-# CONFIG_ARCH_HAVE_HEAPCHECK is not set
-# CONFIG_DEBUG_SYMBOLS is not set
-# CONFIG_ARCH_HAVE_CUSTOMOPT is not set
-# CONFIG_DEBUG_NOOPT is not set
-CONFIG_DEBUG_FULLOPT=y
-
-#
-# System Type
-#
-CONFIG_ARCH_8051=y
-# CONFIG_ARCH_ARM is not set
-# CONFIG_ARCH_AVR is not set
-# CONFIG_ARCH_HC is not set
-# CONFIG_ARCH_MIPS is not set
-# CONFIG_ARCH_RGMP is not set
-# CONFIG_ARCH_SH is not set
-# CONFIG_ARCH_SIM is not set
-# CONFIG_ARCH_X86 is not set
-# CONFIG_ARCH_Z16 is not set
-# CONFIG_ARCH_Z80 is not set
-CONFIG_ARCH="8051"
-
-#
-# ARM Options
-#
-# CONFIG_ARCH_CHIP_8051 is not set
-CONFIG_ARCH_CHIP_8052=y
-
-#
-# Bring-up Debug Options
-#
-CONFIG_ARCH_8051_BRINGUP=y
-CONFIG_ARCH_8051_NOSYSTIMER=y
-CONFIG_ARCH_8051_SUPRESS_INTERRUPTS=y
-
-#
-# Architecture Options
-#
-# CONFIG_ARCH_NOINTC is not set
-# CONFIG_ARCH_VECNOTIRQ is not set
-# CONFIG_ARCH_DMA is not set
-# CONFIG_ARCH_HAVE_IRQPRIO is not set
-CONFIG_CUSTOM_STACK=y
-# CONFIG_ARCH_ADDRENV is not set
-# CONFIG_ARCH_HAVE_VFORK is not set
-# CONFIG_ARCH_HAVE_MMU is not set
-# CONFIG_ARCH_NAND_HWECC is not set
-# CONFIG_ARCH_STACKDUMP is not set
-# CONFIG_ENDIAN_BIG is not set
-# CONFIG_ARCH_IDLE_CUSTOM is not set
-# CONFIG_ARCH_HAVE_RAMFUNCS is not set
-# CONFIG_ARCH_HAVE_RAMVECTORS is not set
-
-#
-# Board Settings
-#
-CONFIG_BOARD_LOOPSPERMSEC=5000
-# CONFIG_ARCH_CALIBRATION is not set
-
-#
-# Interrupt options
-#
-# CONFIG_ARCH_HAVE_INTERRUPTSTACK is not set
-# CONFIG_ARCH_HAVE_HIPRI_INTERRUPT is not set
-
-#
-# Boot options
-#
-# CONFIG_BOOT_RUNFROMEXTSRAM is not set
-CONFIG_BOOT_RUNFROMFLASH=y
-# CONFIG_BOOT_RUNFROMISRAM is not set
-# CONFIG_BOOT_RUNFROMSDRAM is not set
-# CONFIG_BOOT_COPYTORAM is not set
-
-#
-# Boot Memory Configuration
-#
-CONFIG_RAM_START=0x0
-CONFIG_RAM_SIZE=0
-# CONFIG_ARCH_HAVE_SDRAM is not set
-
-#
-# Board Selection
-#
-CONFIG_ARCH_BOARD_PJRC_87C52=y
-# CONFIG_ARCH_BOARD_CUSTOM is not set
-CONFIG_ARCH_BOARD="pjrc-8051"
-
-#
-# Common Board Options
-#
-CONFIG_ARCH_HAVE_LEDS=y
-CONFIG_ARCH_LEDS=y
-
-#
-# Board-Specific Options
-#
-
-#
-# RTOS Features
-#
-# CONFIG_BOARD_INITIALIZE is not set
-CONFIG_USEC_PER_TICK=10000
-# CONFIG_SYSTEM_TIME64 is not set
-CONFIG_RR_INTERVAL=0
-# CONFIG_SCHED_CPULOAD is not set
-# CONFIG_SCHED_INSTRUMENTATION is not set
-CONFIG_TASK_NAME_SIZE=0
-# CONFIG_SCHED_HAVE_PARENT is not set
-# CONFIG_JULIAN_TIME is not set
-CONFIG_START_YEAR=2007
-CONFIG_START_MONTH=2
-CONFIG_START_DAY=21
-# CONFIG_DEV_CONSOLE is not set
-# CONFIG_MUTEX_TYPES is not set
-# CONFIG_PRIORITY_INHERITANCE is not set
-# CONFIG_FDCLONE_DISABLE is not set
-# CONFIG_FDCLONE_STDIO is not set
-CONFIG_SDCLONE_DISABLE=y
-# CONFIG_SCHED_WAITPID is not set
-# CONFIG_SCHED_STARTHOOK is not set
-# CONFIG_SCHED_ATEXIT is not set
-# CONFIG_SCHED_ONEXIT is not set
-CONFIG_USER_ENTRYPOINT="ostest_main"
-CONFIG_DISABLE_OS_API=y
-CONFIG_DISABLE_POSIX_TIMERS=y
-CONFIG_DISABLE_PTHREAD=y
-CONFIG_DISABLE_SIGNALS=y
-CONFIG_DISABLE_MQUEUE=y
-CONFIG_DISABLE_ENVIRON=y
-
-#
-# Sizes of configurable things (0 disables)
-#
-CONFIG_MAX_TASKS=8
-CONFIG_MAX_TASK_ARGS=4
-CONFIG_NPTHREAD_KEYS=0
-CONFIG_NFILE_DESCRIPTORS=0
-CONFIG_NFILE_STREAMS=0
-CONFIG_NAME_MAX=32
-CONFIG_PREALLOC_MQ_MSGS=0
-CONFIG_MQ_MAXMSGSIZE=0
-CONFIG_MAX_WDOGPARMS=2
-CONFIG_PREALLOC_WDOGS=4
-CONFIG_PREALLOC_TIMERS=0
-
-#
-# Stack and heap information
-#
-CONFIG_IDLETHREAD_STACKSIZE=256
-CONFIG_USERMAIN_STACKSIZE=256
-CONFIG_PTHREAD_STACK_MIN=256
-CONFIG_PTHREAD_STACK_DEFAULT=256
-
-#
-# Device Drivers
-#
-CONFIG_DISABLE_POLL=y
-CONFIG_DEV_NULL=y
-# CONFIG_DEV_ZERO is not set
-# CONFIG_LOOP is not set
-# CONFIG_RAMDISK is not set
-# CONFIG_CAN is not set
-# CONFIG_ARCH_HAVE_PWM_PULSECOUNT is not set
-# CONFIG_PWM is not set
-# CONFIG_ARCH_HAVE_I2CRESET is not set
-# CONFIG_I2C is not set
-# CONFIG_SPI is not set
-# CONFIG_I2S is not set
-# CONFIG_RTC is not set
-# CONFIG_WATCHDOG is not set
-# CONFIG_ANALOG is not set
-# CONFIG_AUDIO_DEVICES is not set
-# CONFIG_VIDEO_DEVICES is not set
-# CONFIG_BCH is not set
-# CONFIG_INPUT is not set
-# CONFIG_LCD is not set
-# CONFIG_MMCSD is not set
-# CONFIG_MTD is not set
-# CONFIG_PIPES is not set
-# CONFIG_PM is not set
-# CONFIG_POWER is not set
-# CONFIG_SENSORS is not set
-# CONFIG_SERCOMM_CONSOLE is not set
-CONFIG_SERIAL=y
-# CONFIG_DEV_LOWCONSOLE is not set
-# CONFIG_16550_UART is not set
-# CONFIG_ARCH_HAVE_UART is not set
-# CONFIG_ARCH_HAVE_UART0 is not set
-# CONFIG_ARCH_HAVE_UART1 is not set
-# CONFIG_ARCH_HAVE_UART2 is not set
-# CONFIG_ARCH_HAVE_UART3 is not set
-# CONFIG_ARCH_HAVE_UART4 is not set
-# CONFIG_ARCH_HAVE_UART5 is not set
-# CONFIG_ARCH_HAVE_UART6 is not set
-# CONFIG_ARCH_HAVE_UART7 is not set
-# CONFIG_ARCH_HAVE_UART8 is not set
-# CONFIG_ARCH_HAVE_SCI0 is not set
-# CONFIG_ARCH_HAVE_SCI1 is not set
-# CONFIG_ARCH_HAVE_USART0 is not set
-# CONFIG_ARCH_HAVE_USART1 is not set
-# CONFIG_ARCH_HAVE_USART2 is not set
-# CONFIG_ARCH_HAVE_USART3 is not set
-# CONFIG_ARCH_HAVE_USART4 is not set
-# CONFIG_ARCH_HAVE_USART5 is not set
-# CONFIG_ARCH_HAVE_USART6 is not set
-# CONFIG_ARCH_HAVE_USART7 is not set
-# CONFIG_ARCH_HAVE_USART8 is not set
-
-#
-# USART Configuration
-#
-# CONFIG_MCU_SERIAL is not set
-# CONFIG_STANDARD_SERIAL is not set
-# CONFIG_SERIAL_IFLOWCONTROL is not set
-# CONFIG_SERIAL_OFLOWCONTROL is not set
-# CONFIG_USBDEV is not set
-# CONFIG_USBHOST is not set
-# CONFIG_WIRELESS is not set
-
-#
-# System Logging Device Options
-#
-
-#
-# System Logging
-#
-# CONFIG_RAMLOG is not set
-
-#
-# Networking Support
-#
-# CONFIG_ARCH_HAVE_NET is not set
-# CONFIG_ARCH_HAVE_PHY is not set
-# CONFIG_NET is not set
-
-#
-# File Systems
-#
-
-#
-# File system configuration
-#
-CONFIG_DISABLE_MOUNTPOINT=y
-CONFIG_DISABLE_PSEUDOFS_OPERATIONS=y
-# CONFIG_FS_READABLE is not set
-# CONFIG_FS_WRITABLE is not set
-# CONFIG_FS_RAMMAP is not set
-# CONFIG_FS_PROCFS is not set
-
-#
-# System Logging
-#
-# CONFIG_SYSLOG_ENABLE is not set
-# CONFIG_SYSLOG is not set
-
-#
-# Graphics Support
-#
-# CONFIG_NX is not set
-
-#
-# Memory Management
-#
-# CONFIG_MM_SMALL is not set
-CONFIG_MM_REGIONS=2
-# CONFIG_ARCH_HAVE_HEAP2 is not set
-# CONFIG_GRAN is not set
-
-#
-# Audio Support
-#
-# CONFIG_AUDIO is not set
-
-#
-# Binary Formats
-#
-# CONFIG_BINFMT_DISABLE is not set
-# CONFIG_NXFLAT is not set
-# CONFIG_ELF is not set
-# CONFIG_BUILTIN is not set
-# CONFIG_PIC is not set
-# CONFIG_SYMTAB_ORDEREDBYNAME is not set
-
-#
-# Library Routines
-#
-
-#
-# Standard C Library Options
-#
-CONFIG_STDIO_BUFFER_SIZE=0
-CONFIG_STDIO_LINEBUFFER=y
-CONFIG_NUNGET_CHARS=0
-# CONFIG_LIBM is not set
-CONFIG_NOPRINTF_FIELDWIDTH=y
-# CONFIG_LIBC_FLOATINGPOINT is not set
-CONFIG_LIB_RAND_ORDER=1
-# CONFIG_EOL_IS_CR is not set
-# CONFIG_EOL_IS_LF is not set
-# CONFIG_EOL_IS_BOTH_CRLF is not set
-CONFIG_EOL_IS_EITHER_CRLF=y
-# CONFIG_LIBC_EXECFUNCS is not set
-CONFIG_POSIX_SPAWN_PROXY_STACKSIZE=256
-CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=256
-# CONFIG_LIBC_STRERROR is not set
-# CONFIG_LIBC_PERROR_STDOUT is not set
-CONFIG_ARCH_LOWPUTC=y
-CONFIG_LIB_SENDFILE_BUFSIZE=512
-# CONFIG_ARCH_ROMGETC is not set
-# CONFIG_ARCH_OPTIMIZED_FUNCTIONS is not set
-
-#
-# Non-standard Library Support
-#
-# CONFIG_LIB_KBDCODEC is not set
-# CONFIG_LIB_SLCDCODEC is not set
-
-#
-# Basic CXX Support
-#
-# CONFIG_C99_BOOL8 is not set
-# CONFIG_HAVE_CXX is not set
-
-#
-# Application Configuration
-#
-
-#
-# Built-In Applications
-#
-
-#
-# Examples
-#
-# CONFIG_EXAMPLES_BUTTONS is not set
-# CONFIG_EXAMPLES_CAN is not set
-# CONFIG_EXAMPLES_CONFIGDATA is not set
-# CONFIG_EXAMPLES_DHCPD is not set
-# CONFIG_EXAMPLES_ELF is not set
-# CONFIG_EXAMPLES_FTPC is not set
-# CONFIG_EXAMPLES_FTPD is not set
-# CONFIG_EXAMPLES_HELLO is not set
-# CONFIG_EXAMPLES_HELLOXX is not set
-# CONFIG_EXAMPLES_JSON is not set
-# CONFIG_EXAMPLES_HIDKBD is not set
-# CONFIG_EXAMPLES_KEYPADTEST is not set
-# CONFIG_EXAMPLES_IGMP is not set
-# CONFIG_EXAMPLES_LCDRW is not set
-# CONFIG_EXAMPLES_MM is not set
-# CONFIG_EXAMPLES_MODBUS is not set
-# CONFIG_EXAMPLES_MOUNT is not set
-# CONFIG_EXAMPLES_NRF24L01TERM is not set
-# CONFIG_EXAMPLES_NSH is not set
-# CONFIG_EXAMPLES_NULL is not set
-# CONFIG_EXAMPLES_NX is not set
-# CONFIG_EXAMPLES_NXCONSOLE is not set
-# CONFIG_EXAMPLES_NXFFS is not set
-# CONFIG_EXAMPLES_NXFLAT is not set
-# CONFIG_EXAMPLES_NXHELLO is not set
-# CONFIG_EXAMPLES_NXIMAGE is not set
-# CONFIG_EXAMPLES_NXLINES is not set
-# CONFIG_EXAMPLES_NXTEXT is not set
-CONFIG_EXAMPLES_OSTEST=y
-CONFIG_EXAMPLES_OSTEST_LOOPS=1
-CONFIG_EXAMPLES_OSTEST_STACKSIZE=256
-CONFIG_EXAMPLES_OSTEST_NBARRIER_THREADS=8
-CONFIG_EXAMPLES_OSTEST_RR_RANGE=10000
-CONFIG_EXAMPLES_OSTEST_RR_RUNS=10
-# CONFIG_EXAMPLES_PASHELLO is not set
-# CONFIG_EXAMPLES_PIPE is not set
-# CONFIG_EXAMPLES_POLL is not set
-# CONFIG_EXAMPLES_POSIXSPAWN is not set
-# CONFIG_EXAMPLES_QENCODER is not set
-# CONFIG_EXAMPLES_RGMP is not set
-# CONFIG_EXAMPLES_ROMFS is not set
-# CONFIG_EXAMPLES_SENDMAIL is not set
-# CONFIG_EXAMPLES_SERLOOP is not set
-# CONFIG_EXAMPLES_SLCD is not set
-# CONFIG_EXAMPLES_SMART is not set
-# CONFIG_EXAMPLES_TCPECHO is not set
-# CONFIG_EXAMPLES_TELNETD is not set
-# CONFIG_EXAMPLES_THTTPD is not set
-# CONFIG_EXAMPLES_TIFF is not set
-# CONFIG_EXAMPLES_TOUCHSCREEN is not set
-# CONFIG_EXAMPLES_UDP is not set
-# CONFIG_EXAMPLES_WEBSERVER is not set
-# CONFIG_EXAMPLES_USBSERIAL is not set
-# CONFIG_EXAMPLES_USBTERM is not set
-# CONFIG_EXAMPLES_WATCHDOG is not set
-
-#
-# Graphics Support
-#
-# CONFIG_TIFF is not set
-
-#
-# Interpreters
-#
-# CONFIG_INTERPRETERS_FICL is not set
-# CONFIG_INTERPRETERS_PCODE is not set
-
-#
-# Network Utilities
-#
-
-#
-# Networking Utilities
-#
-# CONFIG_NETUTILS_CODECS is not set
-# CONFIG_NETUTILS_DHCPD is not set
-# CONFIG_NETUTILS_FTPC is not set
-# CONFIG_NETUTILS_FTPD is not set
-# CONFIG_NETUTILS_JSON is not set
-# CONFIG_NETUTILS_SMTP is not set
-# CONFIG_NETUTILS_TFTPC is not set
-# CONFIG_NETUTILS_THTTPD is not set
-# CONFIG_NETUTILS_NETLIB is not set
-# CONFIG_NETUTILS_WEBCLIENT is not set
-
-#
-# FreeModBus
-#
-# CONFIG_MODBUS is not set
-
-#
-# NSH Library
-#
-# CONFIG_NSH_LIBRARY is not set
-
-#
-# NxWidgets/NxWM
-#
-
-#
-# Platform-specific Support
-#
-# CONFIG_PLATFORM_CONFIGDATA is not set
-
-#
-# System Libraries and NSH Add-Ons
-#
-
-#
-# USB CDC/ACM Device Commands
-#
-
-#
-# USB Composite Device Commands
-#
-
-#
-# Custom Free Memory Command
-#
-# CONFIG_SYSTEM_FREE is not set
-
-#
-# I2C tool
-#
-
-#
-# INI File Parser
-#
-# CONFIG_SYSTEM_INIFILE is not set
-
-#
-# FLASH Program Installation
-#
-# CONFIG_SYSTEM_INSTALL is not set
-
-#
-# FLASH Erase-all Command
-#
-
-#
-# NxPlayer media player library / command Line
-#
-# CONFIG_SYSTEM_NXPLAYER is not set
-
-#
-# RAM test
-#
-# CONFIG_SYSTEM_RAMTEST is not set
-
-#
-# readline()
-#
-# CONFIG_SYSTEM_READLINE is not set
-
-#
-# Power Off
-#
-# CONFIG_SYSTEM_POWEROFF is not set
-
-#
-# RAMTRON
-#
-# CONFIG_SYSTEM_RAMTRON is not set
-
-#
-# SD Card
-#
-# CONFIG_SYSTEM_SDCARD is not set
-
-#
-# Sysinfo
-#
-# CONFIG_SYSTEM_SYSINFO is not set
-
-#
-# USB Monitor
-#
-
-#
-# EMACS-like Command Line Editor
-#
-# CONFIG_SYSTEM_CLE is not set
-
-#
-# VI Work-Alike Editor
-#
-# CONFIG_SYSTEM_VI is not set
-
-#
-# Stack Monitor
-#
-
-#
-# USB Mass Storage Device Commands
-#
-
-#
-# Zmodem Commands
-#
-# CONFIG_SYSTEM_ZMODEM is not set
diff --git a/configs/pjrc-8051/include/board.h b/configs/pjrc-8051/include/board.h
deleted file mode 100644
index 9f518f81ee9..00000000000
--- a/configs/pjrc-8051/include/board.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/************************************************************
- * board/board.h
- *
- *   Copyright (C) 2007-2009 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_BOARD_BOARD_H
-#define __ARCH_BOARD_BOARD_H
-
-/************************************************************
- * Included Files
- ************************************************************/
-
-/************************************************************
- * Definitions
- ************************************************************/
-
-/************************************************************
- * Inline Functions
- ************************************************************/
-
-#endif  /* __ARCH_BOARD_BOARD_H */
diff --git a/configs/pjrc-8051/include/pjrc.h b/configs/pjrc-8051/include/pjrc.h
deleted file mode 100644
index 9d0d9482a1a..00000000000
--- a/configs/pjrc-8051/include/pjrc.h
+++ /dev/null
@@ -1,215 +0,0 @@
-/**************************************************************************
- * pjrc.h
- *
- *   Copyright (C) 2007, 2009 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 Gregory Nutt 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 __PJRC_H
-#define __PJRC_H
-
-/**************************************************************************
- * Included Files
- **************************************************************************/
-
-#include <stdint.h>
-
-/**************************************************************************
- * Public Definitions
- **************************************************************************/
-
-/**************************************************************************
- * Public Types
- **************************************************************************/
-
-/**************************************************************************
- * Public Variables
- **************************************************************************/
-
-/* Memory Map
- *
- * BEGIN  END     DESCRIPTION
- * 0x0000 0x1fff  CODE:   ROM containg PAULMON2
- *                DATA:   RAM for program variables
- * 0x2000 0x7fff  COMMON: RAM for program code or
- *                        variables
- * 0x8000 0xf7ff  COMMON: FLASH for program code
- * 0xf800 0xfeff  COMMON: Peripherals
- * 0xff00 0xffff  COMMON: unused
- *
- * Program code may be loaded at the RAM location 0x2000-0x7fff
- * for testing.  If loaded into the FLASH location at
- * 0x8000-0xf7ff, PAULMON2 will automatically write the program
- * into flash.  The program is configured in the RAM-based test
- * configuration:
- */
-
-#define RAM_BLOCK_START  IRAM_SIZE
-#define RAM_BLOCK_END    0x1fff
-
-#define PROGRAM_BASE     0x2000
-#define PROGRAM_END      0x7fff
-
-#define FLASH_BASE       0x8000
-#define FLASH_END        0xf7ff
-
-/* Well-known entry points to access PAULMON2's built-in functions */
-
-#define PM2_ENTRY_PHEX1   0x002e
-#define PM2_ENTRY_COUT    0x0030
-#define PM2_ENTRY_CIN     0x0032
-#define PM2_ENTRY_PHEX    0x0034
-#define PM2_ENTRY_PHEX16  0x0036
-#define PM2_ENTRY_PSTR    0x0038
-#define PM2_ENTRY_ESC     0x003e
-#define PM2_ENTRY_UPPER   0x0040
-#define PM2_ENTRY_PINT8U  0x004D
-#define PM2_ENTRY_PINT8   0x0050
-#define PM2_ENTRY_PINT16U 0x0053
-#define PM2_ENTRY_NEWLINE 0x0048
-#define PM2_ENTRY_PRGM    0x0059
-#define PM2_ENTRY_ERBLOCK 0x0067
-
-/* PAULMON2 captures all interrupt vectors in ROM but relays them
- * through the following RAM addresses:
- */
-
-#define PM2_VECTOR_BASE    PROGRAM_BASE
-#define PM2_VECTOR_EXTINT0 (PM2_VECTOR_BASE + 3)
-#define PM2_VECTOR_TIMER0  (PM2_VECTOR_BASE + 11)
-#define PM2_VECTOR_EXTINT1 (PM2_VECTOR_BASE + 19)
-#define PM2_VECTOR_TIMER1  (PM2_VECTOR_BASE + 27)
-#define PM2_VECTOR_UART    (PM2_VECTOR_BASE + 35)
-#define PM2_VECTOR_TIMER2  (PM2_VECTOR_BASE + 43)
-
-/* Peripheral Mapping
- *
- * Begin End   Peripheral      Addr Acc Function
- * F800  F8FF  82C55 (A, B, C) F800 R/W Port A
- *                             F801 R/W Port B
- *                             F802 R/W Port C
- *                             F803 W   Config A,B,C
- * F900  F9FF  82C55 (D, E, F) F900 R/W Port D
- *                             F901 R/W Port E (LEDs)
- *                             F902 R/W Port F
- *                             F903 W   Config D,E,F
- * FA00  FAFF  User Expansion
- * FB00  FBFF  User Expansion
- * FC00  FCFF  User Expansion
- * FD00  FDFF  User Expansion
- * FE00  FEFF  LCD Port        FE00 W   Command Register
- *                             FE01 R   Status Register
- *                             FE02 W   Display or CGRAM Buffer
- *                             FE03 R   "     " "" "   " "    "
- *
- * These are the memory-mapped locations used to access  the two 82C55
- * chips
- */
-
-#ifndef __ASSEMBLY__
-xdata at 0xF800 uint8_t p82c55_port_a;
-xdata at 0xF801 uint8_t p82c55_port_b;
-xdata at 0xF802 uint8_t p82c55_port_c;
-xdata at 0xF803 uint8_t p82c55_abc_config;
-xdata at 0xF900 uint8_t p82c55_port_d;
-xdata at 0xF901 uint8_t p82c55_port_e;
-xdata at 0xF902 uint8_t p82c55_port_f;
-xdata at 0xF903 uint8_t p82c55_def_config;
-#endif
-
-/* LED (Port E) bit definitions */
-
-#define LED_STARTED                 0
-#define LED_HEAPALLOCATE            1
-#define LED_IRQSENABLED             2
-#define LED_IDLE                    3
-#define LED_UNUSED2                 4
-#define LED_INIRQ                   5
-#define LED_ASSERTION               6
-#define LED_PANIC                   7
-
-/* Registers.  8052 regiser definitions are provided in the SDCC header
- * file 8052.h.  However, a few SFR registers are missing from that
- * file (they can be found in mcs51reg.h, but that file is too much
- * when the following simple addtions do the job).
- */
-
-#ifndef __ASSEMBLY__
-sfr at 0xc9 T2MOD ;
-#endif
-
-/* Timing information.
- *
- * The PJRC board is based on a standard 87C52 CPU clocked at 22.1184 MHz.
- * The CPU clock is divided by 12 to yield a clock frequency of 1.8432 MHz.
- */
-
-#define CPU_CLOCK_HZ      22118400L
-#define TIMER_CLOCK_HZ     1843200L
-
-/* The 87C52 has three timers, timer 0, timer 1, and timer 2.  On the PJRC
- * board, timer 1 and 2 have dedicated functions.  They provide baud support
- * support for the boards two serial ports.  Unfortunately, only timer 2
- * can generate the accurate 100Hz timer desired by the OS.
- *
- * Timer 0 provides only a 8-bit auto-reload mode.
- */
-
-#ifdef CONFIG_8052_TIMER2
-
-/* To use timer 2 as the 100Hz system timer, we need to calculate a 16-bit
- * reload value that results in 100Hz overflow interrupts.  That value
- * is given by:
- *
- * Timer ticks   = TIMER_CLOCK_HZ / (desired ticks-per-second)
- *               = 18432
- * Capture value = 0xffff - (Timer ticks)
- *               = 47103 = 0x67ff
- */
-
-# define TIMER2_CAPTURE_LOW  0xff
-# define TIMER2_CAPTURE_HIGH 0x67
-
-#else
-
-/* Timer 0, mode 0 can be used as a system timer.  In that mode, the
- * 1.8432 is further divided by 32.  A single 8-bit value is incremented
- * at 57600 Hz, which results in 225 Timer 0 overflow interrupts per
- * second.
- */
-
-#endif
-
-/**************************************************************************
- * Public Function Prototypes
- **************************************************************************/
-
-#endif /* __PJRC_H */
diff --git a/configs/pjrc-8051/sdcc-2.6.0.patch b/configs/pjrc-8051/sdcc-2.6.0.patch
deleted file mode 100644
index beb8bf2ea9f..00000000000
--- a/configs/pjrc-8051/sdcc-2.6.0.patch
+++ /dev/null
@@ -1,28 +0,0 @@
-diff -u sdcc/device/lib/Makefile.orig sdcc/device/lib/Makefile
---- sdcc/device/lib/Makefile.orig	2007-03-06 09:55:01.000000000 -0600
-+++ sdcc/device/lib/Makefile	2007-03-06 09:58:32.000000000 -0600
-@@ -242,7 +242,7 @@
- model-mcs51-stack-auto:
- 	if [ "`grep mcs51 $(top_builddir)ports.build`" = mcs51 ]; then \
- 	  for model in $(MODELS); do \
--	    $(MAKE) MODELFLAGS="--model-$$model --stack-auto" PORT=$$model PORTDIR=$(BUILDDIR)/$$model-stack-auto PORTINCDIR=$(INCDIR)/mcs51 objects; \
-+	    $(MAKE) MODELFLAGS="--model-$$model --stack-auto --int-long-reent --float-reent" PORT=$$model PORTDIR=$(BUILDDIR)/$$model-stack-auto PORTINCDIR=$(INCDIR)/mcs51 objects; \
- 	  done \
- 	fi
- 
-diff -u sdcc/device/include/stdarg.h.orig sdcc/device/include/stdarg.h 
---- sdcc/device/include/stdarg.h.orig	2007-03-11 13:21:15.000000000 -0600
-+++ sdcc/device/include/stdarg.h	2007-03-11 13:26:59.000000000 -0600
-@@ -25,9 +25,9 @@
- 
- #else
- 
--typedef	unsigned char __data * va_list ;
--#define va_arg(marker,type) *((type __data * )(marker -= sizeof(type)))
--#define	va_start(marker,first) { marker = (va_list) ((char __data * )&first); }
-+typedef	unsigned char * va_list ;
-+#define va_arg(marker,type) *((type * )(marker -= sizeof(type)))
-+#define	va_start(marker,first) { marker = (va_list) ((char * )&first); }
- 
- #endif
- 
diff --git a/configs/pjrc-8051/setenv.sh b/configs/pjrc-8051/setenv.sh
deleted file mode 100755
index 621bb27b1c0..00000000000
--- a/configs/pjrc-8051/setenv.sh
+++ /dev/null
@@ -1,65 +0,0 @@
-#!/bin/bash
-# configs/pjrc-8051/setenv.sh
-#
-#   Copyright (C) 2007-2008, 2012 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.
-#
-
-if [ "$_" = "$0" ] ; then
-  echo "You must source this script, not run it!" 1>&2
-  exit 1
-fi
-
-WD=`pwd`
-if [ ! -x "setenv.sh" ]; then
-  echo "This script must be executed from the top-level NuttX build directory"
-  exit 1
-fi
-
-if [ -z "${PATH_ORIG}" ]; then
-  export PATH_ORIG="${PATH}"
-fi
-
-#
-# This is the normal installation directory for SDCC under Linux, OSX
-# or Linux:
-#
-export TOOLCHAIN_BIN=/usr/local/bin
-
-#
-# This is the normal installation directory for SDCC under Windows
-#
-#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/SDCC/bin"
-
-#
-# Add the path to the toolchain to the PATH varialble
-#
-export PATH="${TOOLCHAIN_BIN}":/sbin:/usr/sbin:${PATH_ORIG}
-echo "PATH : ${PATH}"
diff --git a/configs/pjrc-8051/src/.gitignore b/configs/pjrc-8051/src/.gitignore
deleted file mode 100644
index 04b280c8ba8..00000000000
--- a/configs/pjrc-8051/src/.gitignore
+++ /dev/null
@@ -1,15 +0,0 @@
-/Make.dep
-/.depend
-/up_mem.h
-/*.sym
-/*.asm
-/*.rel
-/*.lst
-/*.adb
-/*.rst
-/*.lib
-/*.lnk
-/*.map
-/*.mem
-/*.ihx
-/*.hex
diff --git a/configs/pjrc-8051/src/Makefile b/configs/pjrc-8051/src/Makefile
deleted file mode 100644
index 0983153b072..00000000000
--- a/configs/pjrc-8051/src/Makefile
+++ /dev/null
@@ -1,75 +0,0 @@
-############################################################################
-# configs/pjrc-8051/src/Makefile
-#
-#   Copyright (C) 2007, 2008, 2012 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.
-#
-############################################################################
-
--include $(TOPDIR)/Make.defs
-
-CFLAGS		+= -I$(TOPDIR)/sched
-
-ASRCS		=
-AOBJS		= $(ASRCS:.S=$(OBJEXT))
-CSRCS		= up_leds.c
-COBJS		= $(CSRCS:.c=$(OBJEXT))
-
-SRCS		= $(ASRCS) $(CSRCS)
-OBJS		= $(AOBJS) $(COBJS)
-
-CFLAGS		+= -I $(TOPDIR)/arch/$(CONFIG_ARCH)/src
-
-all: libboard$(LIBEXT)
-
-$(AOBJS): %$(OBJEXT): %.S
-	$(call ASSEMBLE, $<, $@)
-
-$(COBJS) $(LINKOBJS): %$(OBJEXT): %.c
-	$(call COMPILE, $<, $@)
-
-libboard$(LIBEXT): $(OBJS)
-	$(call ARCHIVE, $@, $(OBJS))
-
-.depend: Makefile $(SRCS)
-	$(Q) $(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
-	$(Q) touch $@
-
-depend: .depend
-
-clean:
-	$(call DELFILE, libboard$(LIBEXT))
-	$(call CLEAN)
-
-distclean: clean
-	$(call DELFILE, Make.dep)
-	$(call DELFILE, .depend)
-
--include Make.dep
diff --git a/configs/pjrc-8051/src/up_leds.c b/configs/pjrc-8051/src/up_leds.c
deleted file mode 100644
index f2020b54046..00000000000
--- a/configs/pjrc-8051/src/up_leds.c
+++ /dev/null
@@ -1,207 +0,0 @@
-/************************************************************************
- * up_leds.c
- *
- *   Copyright (C) 2007, 2009, 2013 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 Gregory Nutt 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 <stdint.h>
-#include "up_internal.h"
-
-/************************************************************************
- * Definitions
- ************************************************************************/
-
-#define RESET_KLUDGE_NEEDED 1
-
-/************************************************************************
- * Private Data
- ************************************************************************/
-
-static uint8_t g_ledstate;
-
-/************************************************************************
- * Private Functions
- ************************************************************************/
-
-#if defined(CONFIG_DEBUG_LEDS) && defined(CONFIG_ARCH_LEDS)
-static void _up_puthex(uint8_t hex) __naked
-{
-  hex; /* To avoid unreferenced argument warning */
-  _asm
-        mov     a, dpl
-        ljmp    PM2_ENTRY_PHEX
-  _endasm;
-}
-
-static void _up_putch(uint8_t ch) __naked
-{
-  _asm
-        mov     a, dpl
-        ljmp	PM2_ENTRY_COUT
-  _endasm;
-}
-
-static void _up_putnl(void) __naked
-{
-  _asm
-	ljmp	PM2_ENTRY_NEWLINE
-  _endasm;
-}
-
-# define _up_showledinit() \
-  _up_putch('I'); \
-  _up_puthex(g_ledstate); _up_putch(':'); \
-  _up_puthex(p82c55_port_e); _up_putnl();
-
-# define _up_showledreset() \
-  _up_putch('R'); \
-  _up_puthex(led); _up_putch(':'); \
-  _up_puthex(g_ledstate); _up_putch(':'); \
-  _up_puthex(p82c55_port_e); _up_putnl();
-
-# define _up_showledon() \
-  _up_putch('+'); \
-  _up_puthex(led); _up_putch(':'); \
-  _up_puthex(g_ledstate); _up_putch(':'); \
-  _up_puthex(p82c55_port_e); _up_putnl();
-
-# define _up_showledoff() \
-  _up_putch('-'); \
-  _up_puthex(led); _up_putch(':'); \
-  _up_puthex(g_ledstate); _up_putch(':'); \
-  _up_puthex(p82c55_port_e); _up_putnl();
-
-#else
-
-# define _up_showledinit()
-# define _up_showledreset()
-# define _up_showledon()
-# define _up_showledoff()
-
-#endif
-
-/************************************************************************
- * Public Funtions
- ************************************************************************/
-
-/************************************************************************
- * Name: board_led_initialize
- ************************************************************************/
-
-#ifdef CONFIG_ARCH_LEDS
-void board_led_initialize(void)
-{
-  /* Set all ports as outputs */
-
-  p82c55_def_config = 128;
-
-  /* Turn LED 1-7 off; turn LED 0 on */
-
-  g_ledstate    = 0xfe;
-  p82c55_port_e = g_ledstate;
-
-  _up_showledinit();
-}
-
-/************************************************************************
- * Name: board_led_on
- ************************************************************************/
-
-void board_led_on(uint8_t led)
-{
-  /* This may be called from an interrupt handler */
-
-  irqstate_t flags = irqsave();
-
-#ifdef RESET_KLUDGE_NEEDED
-  /* I don't understand why this happens yet, but sometimes
-   * it is necessary to reconfigure port E.
-   */
-
-  if (g_ledstate != p82c55_port_e)
-    {
-      _up_showledreset();
-      p82c55_def_config = 128;
-    }
-#endif
-
-  /* Clear the bit in port E corresponding to LED to turn it on */
-
-  if (led < 8)
-    {
-      g_ledstate   &= ~(g_ntobit[led]);
-      p82c55_port_e = g_ledstate;
-    }
-
-  _up_showledon();
-  irqrestore(flags);
-}
-
-/************************************************************************
- * Name: board_led_off
- ************************************************************************/
-
-void board_led_off(uint8_t led)
-{
-  /* This may be called from an interrupt handler */
-
-  irqstate_t flags = irqsave();
-
-#ifdef RESET_KLUDGE_NEEDED
-  /* I don't understand why this happens yet, but sometimes
-   * it is necessary to reconfigure port E.
-   */
-
-  if (g_ledstate != p82c55_port_e)
-    {
-      _up_showledreset();
-      p82c55_def_config = 128;
-    }
-#endif
-
-  /* Set the bit in port E corresponding to LED to turn it off */
-
-  if (led < 8)
-    {
-      g_ledstate   |= g_ntobit[led];
-      p82c55_port_e = g_ledstate;
-    }
-
-  _up_showledoff();
-  irqrestore(flags);
-}
-#endif /* CONFIG_ARCH_LEDS */