diff --git a/.gitignore b/.gitignore
index 1e1ae3e..df91ee2 100755
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
-out/*
-build/*
+build/output/*
+build/*.bin
+build/*.img
 *.img
 *.img.gz
 *.img.gz
diff --git a/build/.keep_dir b/build/.keep_dir
new file mode 100644
index 0000000..e69de29
diff --git a/build/output/.keep_dir b/build/output/.keep_dir
new file mode 100644
index 0000000..e69de29
diff --git a/docs/debug/8086_gdb/.gdbinit b/docs/debug/8086_gdb/.gdbinit
new file mode 100755
index 0000000..199648e
--- /dev/null
+++ b/docs/debug/8086_gdb/.gdbinit
@@ -0,0 +1,10 @@
+set tdesc filename target.xml
+set arch i8086
+set disassembly-flavor intel
+target remote localhost:1234
+
+display/i $cs*16+$pc
+b *0x7c00      
+set $cs = 0xf000
+set $pc = 0xfff0
+c
diff --git a/docs/debug/8086_gdb/target.xml b/docs/debug/8086_gdb/target.xml
new file mode 100755
index 0000000..1ef0b40
--- /dev/null
+++ b/docs/debug/8086_gdb/target.xml
@@ -0,0 +1,112 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2010-2017 Free Software Foundation, Inc.
+
+     Copying and distribution of this file, with or without modification,
+     are permitted in any medium without royalty provided the copyright
+     notice and this notice are preserved.  -->
+<target/>
+<!DOCTYPE target SYSTEM "gdb-target.dtd">
+    <architecture>i8086</architecture>
+    <feature name="org.gnu.gdb.i386.core">
+        <flags id="i386_eflags" size="4">
+            <field name="CF" start="0" end="0"/>
+            <field name="" start="1" end="1"/>
+            <field name="PF" start="2" end="2"/>
+            <field name="AF" start="4" end="4"/>
+            <field name="ZF" start="6" end="6"/>
+            <field name="SF" start="7" end="7"/>
+            <field name="TF" start="8" end="8"/>
+            <field name="IF" start="9" end="9"/>
+            <field name="DF" start="10" end="10"/>
+            <field name="OF" start="11" end="11"/>
+            <field name="NT" start="14" end="14"/>
+            <field name="RF" start="16" end="16"/>
+            <field name="VM" start="17" end="17"/>
+            <field name="AC" start="18" end="18"/>
+            <field name="VIF" start="19" end="19"/>
+            <field name="VIP" start="20" end="20"/>
+            <field name="ID" start="21" end="21"/>
+        </flags>
+
+        <reg name="eax" bitsize="32" type="int32"/>
+        <reg name="ecx" bitsize="32" type="int32"/>
+        <reg name="edx" bitsize="32" type="int32"/>
+        <reg name="ebx" bitsize="32" type="int32"/>
+        <reg name="esp" bitsize="32" type="data_ptr"/>
+        <reg name="ebp" bitsize="32" type="data_ptr"/>
+        <reg name="esi" bitsize="32" type="int32"/>
+        <reg name="edi" bitsize="32" type="int32"/>
+
+        <reg name="eip" bitsize="32" type="code_ptr"/>
+        <reg name="eflags" bitsize="32" type="i386_eflags"/>
+        
+        <reg name="cs" bitsize="32" type="int32"/>
+        <reg name="ss" bitsize="32" type="int32"/>
+        <reg name="ds" bitsize="32" type="int32"/>
+        <reg name="es" bitsize="32" type="int32"/>
+        <reg name="fs" bitsize="32" type="int32"/>
+        <reg name="gs" bitsize="32" type="int32"/>
+
+        <reg name="st0" bitsize="80" type="i387_ext"/>
+        <reg name="st1" bitsize="80" type="i387_ext"/>
+        <reg name="st2" bitsize="80" type="i387_ext"/>
+        <reg name="st3" bitsize="80" type="i387_ext"/>
+        <reg name="st4" bitsize="80" type="i387_ext"/>
+        <reg name="st5" bitsize="80" type="i387_ext"/>
+        <reg name="st6" bitsize="80" type="i387_ext"/>
+        <reg name="st7" bitsize="80" type="i387_ext"/>
+
+        <reg name="fctrl" bitsize="32" type="int" group="float"/>
+        <reg name="fstat" bitsize="32" type="int" group="float"/>
+        <reg name="ftag" bitsize="32" type="int" group="float"/>
+        <reg name="fiseg" bitsize="32" type="int" group="float"/>
+        <reg name="fioff" bitsize="32" type="int" group="float"/>
+        <reg name="foseg" bitsize="32" type="int" group="float"/>
+        <reg name="fooff" bitsize="32" type="int" group="float"/>
+        <reg name="fop" bitsize="32" type="int" group="float"/>
+    </feature>
+    <feature name="org.gnu.gdb.i386.32bit.sse">
+        <vector id="v4f" type="ieee_single" count="4"/>
+        <vector id="v2d" type="ieee_double" count="2"/>
+        <vector id="v16i8" type="int8" count="16"/>
+        <vector id="v8i16" type="int16" count="8"/>
+        <vector id="v4i32" type="int32" count="4"/>
+        <vector id="v2i64" type="int64" count="2"/>
+        <union id="vec128">
+            <field name="v4_float" type="v4f"/>
+            <field name="v2_double" type="v2d"/>
+            <field name="v16_int8" type="v16i8"/>
+            <field name="v8_int16" type="v8i16"/>
+            <field name="v4_int32" type="v4i32"/>
+            <field name="v2_int64" type="v2i64"/>
+            <field name="uint128" type="uint128"/>
+        </union>
+        <flags id="i386_mxcsr" size="4">
+            <field name="IE" start="0" end="0"/>
+            <field name="DE" start="1" end="1"/>
+            <field name="ZE" start="2" end="2"/>
+            <field name="OE" start="3" end="3"/>
+            <field name="UE" start="4" end="4"/>
+            <field name="PE" start="5" end="5"/>
+            <field name="DAZ" start="6" end="6"/>
+            <field name="IM" start="7" end="7"/>
+            <field name="DM" start="8" end="8"/>
+            <field name="ZM" start="9" end="9"/>
+            <field name="OM" start="10" end="10"/>
+            <field name="UM" start="11" end="11"/>
+            <field name="PM" start="12" end="12"/>
+            <field name="FZ" start="15" end="15"/>
+        </flags>
+
+        <reg name="xmm0" bitsize="128" type="vec128" regnum="32"/>
+        <reg name="xmm1" bitsize="128" type="vec128"/>
+        <reg name="xmm2" bitsize="128" type="vec128"/>
+        <reg name="xmm3" bitsize="128" type="vec128"/>
+        <reg name="xmm4" bitsize="128" type="vec128"/>
+        <reg name="xmm5" bitsize="128" type="vec128"/>
+        <reg name="xmm6" bitsize="128" type="vec128"/>
+        <reg name="xmm7" bitsize="128" type="vec128"/>
+
+        <reg name="mxcsr" bitsize="32" type="i386_mxcsr" group="vector"/>
+    </feature>
+</target>
\ No newline at end of file
diff --git a/docs/debug/x86_ddd/.gdbinit b/docs/debug/x86_ddd/.gdbinit
new file mode 100755
index 0000000..9622bd7
--- /dev/null
+++ b/docs/debug/x86_ddd/.gdbinit
@@ -0,0 +1,9 @@
+target remote localhost:1234
+set architecture i386
+set disassembly-flavor intel
+
+display/x $eip
+display/x $esp
+display/x $ebp
+
+graph display `x /16xw ($ebp - (16*4))`
diff --git a/docs/debug/x86_gdb/.gdbinit b/docs/debug/x86_gdb/.gdbinit
new file mode 100755
index 0000000..6907826
--- /dev/null
+++ b/docs/debug/x86_gdb/.gdbinit
@@ -0,0 +1,8 @@
+target remote localhost:1234
+set architecture i386
+set disassembly-flavor intel
+layout asm
+
+display/x $eip
+display/x $esp
+display/x $ebp