diff --git a/Cargo.lock b/Cargo.lock
index 1084bec..45f48be 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -87,6 +87,15 @@ dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "bincode"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "bit"
 version = "0.1.1"
@@ -130,6 +139,11 @@ name = "byteorder"
 version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "bytesize"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "bzip2"
 version = "0.3.3"
@@ -378,6 +392,11 @@ name = "memchr"
 version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "memmem"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "minifb"
 version = "0.11.2"
@@ -717,17 +736,20 @@ name = "rustboyadvance-ng"
 version = "0.1.0"
 dependencies = [
  "ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bincode 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "bit 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "bit-set 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitfield 0.13.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bytesize 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "colored 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "ctrlc 3.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "debug_stub_derive 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "enum-primitive-derive 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hexdump 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memmem 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "minifb 0.11.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "nom 5.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "num 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -735,6 +757,7 @@ dependencies = [
  "ringbuf 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustyline 5.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "sdl2 0.32.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin_sleep 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "zip 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -810,6 +833,24 @@ name = "semver-parser"
 version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "serde"
+version = "1.0.104"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.104"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.13 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "spin_sleep"
 version = "0.3.7"
@@ -1015,6 +1056,7 @@ dependencies = [
 "checksum backtrace 0.3.40 (registry+https://github.com/rust-lang/crates.io-index)" = "924c76597f0d9ca25d762c25a4d369d51267536465dc5064bdf0eb073ed477ea"
 "checksum backtrace-sys 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)" = "5d6575f128516de27e3ce99689419835fce9643a9b215a14d2b5b685be018491"
 "checksum base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0b25d992356d2eb0ed82172f5248873db5560c4721f564b13cb5193bda5e668e"
+"checksum bincode 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5753e2a71534719bf3f4e57006c3a4f0d2c672a4b676eec84161f763eca87dbf"
 "checksum bit 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2b645c5c09a7d4035949cfce1a915785aaad6f17800c35fda8a8c311c491f284"
 "checksum bit-set 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e84c238982c4b1e1ee668d136c510c67a13465279c0cb367ea6baf6310620a80"
 "checksum bit-vec 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "f59bbe95d4e52a6398ec21238d31577f2b28a9d86807f06ca59d191d8440d0bb"
@@ -1022,6 +1064,7 @@ dependencies = [
 "checksum bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3d155346769a6855b86399e9bc3814ab343cd3d62c7e985113d46a0ec3c281fd"
 "checksum blake2b_simd 0.5.10 (registry+https://github.com/rust-lang/crates.io-index)" = "d8fb2d74254a3a0b5cac33ac9f8ed0e44aa50378d9dbb2e5d83bd21ed1dc2c8a"
 "checksum byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a7c3dd8985a7111efc5c80b44e23ecdd8c007de8ade3b96595387e812b957cf5"
+"checksum bytesize 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "716960a18f978640f25101b5cbf1c6f6b0d3192fab36a2d98ca96f0ecbe41010"
 "checksum bzip2 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "42b7c3cbf0fa9c1b82308d57191728ca0256cb821220f4e2fd410a72ade26e3b"
 "checksum bzip2-sys 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "6584aa36f5ad4c9247f5323b0a42f37802b37a836f0ad87084d7a33961abe25f"
 "checksum cc 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)" = "ce400c638d48ee0e9ab75aef7997609ec57367ccfe1463f21bf53c3eca67bf46"
@@ -1052,6 +1095,7 @@ dependencies = [
 "checksum libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)" = "d44e80633f007889c7eff624b709ab43c92d708caad982295768a7b13ca3b5eb"
 "checksum log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)" = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
 "checksum memchr 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3197e20c7edb283f87c071ddfc7a2cca8f8e0b888c242959846a6fce03c72223"
+"checksum memmem 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a64a92489e2744ce060c349162be1c5f33c6969234104dbd99ddb5feb08b8c15"
 "checksum minifb 0.11.2 (registry+https://github.com/rust-lang/crates.io-index)" = "85c2cedede43aad485232acf318a3e191ee5a3c2250ca8a3556b849a48e8b901"
 "checksum miniz_oxide 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "6f3f74f726ae935c3f514300cc6773a0c9492abc5e972d42ba0c0ebb88757625"
 "checksum nix 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)" = "6c722bee1037d430d0f8e687bbdbf222f27cc6e4e68d5caf630857bb2b6dbdce"
@@ -1098,6 +1142,8 @@ dependencies = [
 "checksum sdl2-sys 0.32.6 (registry+https://github.com/rust-lang/crates.io-index)" = "34e71125077d297d57e4c1acfe8981b5bdfbf5a20e7b589abfdcb33bf1127f86"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
+"checksum serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)" = "414115f25f818d7dfccec8ee535d76949ae78584fc4f79a6f45a904bf8ab4449"
+"checksum serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)" = "128f9e303a5a29922045a830221b8f78ec74a5f544944f3d5984f8ec3895ef64"
 "checksum spin_sleep 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "891836ef5f8a5b9678938d34d75391a3794267806482105ffcd363271980c10c"
 "checksum static_assertions 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "7f3eb36b47e512f8f1c9e3d10c2c1965bc992bd9cdb024fa581e2194501c83d3"
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"