feat\!: migrate to LWTOOLS build system

code/boot/makefile

@@ -8,26 +8,45 @@
 # Project Defaults & Folders
 # ------------------------------------------------------------------------------
 
-TARGET  := boot.bin
+TARGET  := boot
+TARGROM := $(TARGET).bin
 SRCDIR  := src/
-MAINSRC := $(SRCDIR)boot.s
+BUILDDIR := build/
 SRCS    := $(wildcard $(SRCDIR)*.s)
+OBJS    := $(patsubst $(SRCDIR)%.s,$(BUILDDIR)%.o,$(SRCS))
 INCS    := $(wildcard $(SRCDIR)*.inc)
 
 # ------------------------------------------------------------------------------
 # Toolchain Definitions
 # ------------------------------------------------------------------------------
 
-AS := asm6809
+AS  := lwasm
+LD  := lwlink
+FIX := mot2bin
+
+ASFLAGS := -f obj
+LDFLAGS := -f srec -m map.txt -s linkscript
 
 # ------------------------------------------------------------------------------
 # Rules and Phony Targets
 # ------------------------------------------------------------------------------
 
-all: $(TARGET)
+all: $(TARGROM)
 
-$(TARGET): $(SRCS) $(INCS)
-	$(AS) -o $(TARGET) $(MAINSRC)
+# Fix srec into flashable bin file
+$(TARGROM): $(TARGET).s19
+	$(FIX) -out $@ $<
 
+# Link objects
+$(TARGET).s19: $(OBJS)
+	$(LD) $(LDFLAGS) -o $@ $<
+
+# Assemble objects
+$(OBJS): $(BUILDDIR)%.o : $(SRCDIR)%.s
+	-@mkdir -p $(BUILDDIR)
+	$(AS) $(ASFLAGS) -o $@ $<
+
+.IGNORE: clean
 clean:
-	rm -v $(TARGET)
+	@echo 'Cleaning up intermediary files...'
+	@rm -rv $(TARGROM) $(TARGET).s19 $(BUILDDIR)