diff --git a/tmk_core/rules.mk b/tmk_core/rules.mk
index d2350f27c12..f97c5cb49db 100644
--- a/tmk_core/rules.mk
+++ b/tmk_core/rules.mk
@@ -203,6 +203,28 @@ SCANF_LIB =
 MATH_LIB = -lm
 
 
+# List any extra directories to look for libraries here.
+#     Each directory must be seperated by a space.
+#     Use forward slashes for directory separators.
+#     For a directory that has spaces, enclose it in quotes.
+EXTRALIBDIRS = 
+
+
+
+#---------------- External Memory Options ----------------
+
+# 64 KB of external RAM, starting after internal RAM (ATmega128!),
+# used for variables (.data/.bss) and heap (malloc()).
+#EXTMEMOPTS = -Wl,-Tdata=0x801100,--defsym=__heap_end=0x80ffff
+
+# 64 KB of external RAM, starting after internal RAM (ATmega128!),
+# only used for heap (malloc()).
+#EXTMEMOPTS = -Wl,--section-start,.data=0x801100,--defsym=__heap_end=0x80ffff
+
+EXTMEMOPTS =
+
+
+
 #---------------- Linker Options ----------------
 #  -Wl,...:     tell GCC to pass this to linker.
 #    -Map:      create map file
@@ -220,6 +242,40 @@ LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)
 # You can give EXTRALDFLAGS at 'make' command line.
 LDFLAGS += $(EXTRALDFLAGS)
 
+
+
+#---------------- Debugging Options ----------------
+
+# For simulavr only - target MCU frequency.
+DEBUG_MFREQ = $(F_CPU)
+
+# Set the DEBUG_UI to either gdb or insight.
+# DEBUG_UI = gdb
+DEBUG_UI = insight
+
+# Set the debugging back-end to either avarice, simulavr.
+DEBUG_BACKEND = avarice
+#DEBUG_BACKEND = simulavr
+
+# GDB Init Filename.
+GDBINIT_FILE = __avr_gdbinit
+
+# When using avarice settings for the JTAG
+JTAG_DEV = /dev/com1
+
+# Debugging port used to communicate between GDB / avarice / simulavr.
+DEBUG_PORT = 4242
+
+# Debugging host used to communicate between GDB / avarice / simulavr, normally
+#     just set to localhost unless doing some sort of crazy debugging when 
+#     avarice is running on a different computer.
+DEBUG_HOST = localhost
+
+
+
+#============================================================================
+
+
 # Define programs and commands.
 SHELL = sh
 REMOVE = rm -f
@@ -330,6 +386,111 @@ sizeafter: $(BUILD_DIR)/$(TARGET).hex
 gccversion :
 	@$(SILENT) || $(CC) --version
 
+
+
+# Program the device.  
+program: $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).eep
+	$(PROGRAM_CMD)
+
+teensy: $(BUILD_DIR)/$(TARGET).hex
+	$(TEENSY_LOADER_CLI) -mmcu=$(MCU) -w -v $(BUILD_DIR)/$(TARGET).hex
+
+flip: $(BUILD_DIR)/$(TARGET).hex
+	batchisp -hardware usb -device $(MCU) -operation erase f
+	batchisp -hardware usb -device $(MCU) -operation loadbuffer $(BUILD_DIR)/$(TARGET).hex program
+	batchisp -hardware usb -device $(MCU) -operation start reset 0
+
+dfu: $(BUILD_DIR)/$(TARGET).hex sizeafter
+ifneq (, $(findstring 0.7, $(shell dfu-programmer --version 2>&1)))
+	dfu-programmer $(MCU) erase --force
+else
+	dfu-programmer $(MCU) erase
+endif
+	dfu-programmer $(MCU) erase
+	dfu-programmer $(MCU) flash $(BUILD_DIR)/$(TARGET).hex
+	dfu-programmer $(MCU) reset
+
+dfu-no-build:
+ifneq (, $(findstring 0.7, $(shell dfu-programmer --version 2>&1)))
+	dfu-programmer $(MCU) erase --force
+else
+	dfu-programmer $(MCU) erase
+endif
+	dfu-programmer $(MCU) erase
+	dfu-programmer $(MCU) flash $(KEYMAP_PATH)/compiled.hex
+	dfu-programmer $(MCU) reset
+	
+dfu-start:
+	dfu-programmer $(MCU) reset
+	dfu-programmer $(MCU) start
+
+flip-ee: $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).eep
+	$(COPY) $(BUILD_DIR)/$(TARGET).eep $(BUILD_DIR)/$(TARGET)eep.hex
+	batchisp -hardware usb -device $(MCU) -operation memory EEPROM erase
+	batchisp -hardware usb -device $(MCU) -operation memory EEPROM loadbuffer $(BUILD_DIR)/$(TARGET)eep.hex program
+	batchisp -hardware usb -device $(MCU) -operation start reset 0
+	$(REMOVE) $(BUILD_DIR)/$(TARGET)eep.hex
+
+dfu-ee: $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).eep
+ifneq (, $(findstring 0.7, $(shell dfu-programmer --version 2>&1)))
+	dfu-programmer $(MCU) flash --eeprom $(BUILD_DIR)/$(TARGET).eep
+else
+	dfu-programmer $(MCU) flash-eeprom $(BUILD_DIR)/$(TARGET).eep
+endif
+	dfu-programmer $(MCU) reset
+
+
+# Generate avr-gdb config/init file which does the following:
+#     define the reset signal, load the target file, connect to target, and set 
+#     a breakpoint at main().
+gdb-config: 
+	@$(REMOVE) $(GDBINIT_FILE)
+	@echo define reset >> $(GDBINIT_FILE)
+	@echo SIGNAL SIGHUP >> $(GDBINIT_FILE)
+	@echo end >> $(GDBINIT_FILE)
+	@echo file $(BUILD_DIR)/$(TARGET).elf >> $(GDBINIT_FILE)
+	@echo target remote $(DEBUG_HOST):$(DEBUG_PORT)  >> $(GDBINIT_FILE)
+ifeq ($(DEBUG_BACKEND),simulavr)
+	@echo load  >> $(GDBINIT_FILE)
+endif
+	@echo break main >> $(GDBINIT_FILE)
+
+debug: gdb-config $(BUILD_DIR)/$(TARGET).elf
+ifeq ($(DEBUG_BACKEND), avarice)
+	@echo Starting AVaRICE - Press enter when "waiting to connect" message displays.
+	@$(WINSHELL) /c start avarice --jtag $(JTAG_DEV) --erase --program --file \
+	$(BUILD_DIR)/$(TARGET).elf $(DEBUG_HOST):$(DEBUG_PORT)
+	@$(WINSHELL) /c pause
+
+else
+	@$(WINSHELL) /c start simulavr --gdbserver --device $(MCU) --clock-freq \
+	$(DEBUG_MFREQ) --port $(DEBUG_PORT)
+endif
+	@$(WINSHELL) /c start avr-$(DEBUG_UI) --command=$(GDBINIT_FILE)
+
+
+
+
+# Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB.
+COFFCONVERT = $(OBJCOPY) --debugging
+COFFCONVERT += --change-section-address .data-0x800000
+COFFCONVERT += --change-section-address .bss-0x800000
+COFFCONVERT += --change-section-address .noinit-0x800000
+COFFCONVERT += --change-section-address .eeprom-0x810000
+
+
+
+coff: $(BUILD_DIR)/$(TARGET).elf
+	@$(SECHO) $(MSG_COFF) $(BUILD_DIR)/$(TARGET).cof
+	$(COFFCONVERT) -O coff-avr $< $(BUILD_DIR)/$(TARGET).cof
+
+
+extcoff: $(BUILD_DIR)/$(TARGET).elf
+	@$(SECHO) $(MSG_EXTENDED_COFF) $(BUILD_DIR)/$(TARGET).cof
+	$(COFFCONVERT) -O coff-ext-avr $< $(BUILD_DIR)/$(TARGET).cof
+
+
+
 # Create final output files (.hex, .eep) from ELF output file.
 %.hex: %.elf
 	@$(SILENT) || printf "$(MSG_FLASH) $@" | $(AWK_CMD)