diff --git a/agb/Cargo.toml b/agb/Cargo.toml
index d015d115..4027a4f9 100644
--- a/agb/Cargo.toml
+++ b/agb/Cargo.toml
@@ -19,7 +19,7 @@ agb_macros = { version = "0.15.0", path = "../agb-macros" }
 agb_fixnum = { version = "0.15.0", path = "../agb-fixnum" }
 agb_hashmap = { version = "0.15.0", path = "../agb-hashmap" }
 bare-metal = "1"
-modular-bitfield = "0.11"
+bilge = "0.1"
 rustc-hash =  { version = "1", default-features = false }
 
 [package.metadata.docs.rs]
diff --git a/agb/src/display/mod.rs b/agb/src/display/mod.rs
index e91ac9d6..76d9e5a8 100644
--- a/agb/src/display/mod.rs
+++ b/agb/src/display/mod.rs
@@ -1,7 +1,8 @@
 use crate::memory_mapped::MemoryMapped;
+
+use bilge::prelude::*;
 use bitflags::bitflags;
 
-use modular_bitfield::BitfieldSpecifier;
 use video::Video;
 
 use self::{
@@ -159,7 +160,8 @@ pub fn busy_wait_for_vblank() {
     while VCOUNT.get() < 160 {}
 }
 
-#[derive(BitfieldSpecifier, Clone, Copy, Debug)]
+#[bitsize(2)]
+#[derive(FromBits, PartialEq, Eq, Clone, Copy, Debug)]
 pub enum Priority {
     P0 = 0,
     P1 = 1,
diff --git a/agb/src/display/object/unmanaged/attributes.rs b/agb/src/display/object/unmanaged/attributes.rs
index 2ae0d948..634e4760 100644
--- a/agb/src/display/object/unmanaged/attributes.rs
+++ b/agb/src/display/object/unmanaged/attributes.rs
@@ -1,4 +1,4 @@
-use modular_bitfield::BitfieldSpecifier;
+use bilge::prelude::*;
 
 use crate::display::Priority;
 
@@ -17,7 +17,14 @@ pub struct Attributes {
 impl Default for Attributes {
     fn default() -> Self {
         Self {
-            a0: ObjectAttribute0::from_bytes([0, 0b10]),
+            a0: ObjectAttribute0::new(
+                0,
+                ObjectMode::Normal,
+                GraphicsMode::Normal,
+                false,
+                ColourMode::Four,
+                u2::new(1),
+            ),
             a1s: Default::default(),
             a1a: Default::default(),
             a2: Default::default(),
@@ -37,20 +44,12 @@ pub enum AffineMode {
 impl Attributes {
     pub fn write(self, ptr: *mut u16) {
         let mode = self.a0.object_mode();
-        unsafe {
-            let attrs = core::mem::transmute::<_, [u16; 3]>(match mode {
-                ObjectMode::Normal => [
-                    self.a0.into_bytes(),
-                    self.a1s.into_bytes(),
-                    self.a2.into_bytes(),
-                ],
-                _ => [
-                    self.a0.into_bytes(),
-                    self.a1a.into_bytes(),
-                    self.a2.into_bytes(),
-                ],
-            });
+        let attrs = match mode {
+            ObjectMode::Normal => [self.a0.into(), self.a1s.into(), self.a2.into()],
+            _ => [self.a0.into(), self.a1a.into(), self.a2.into()],
+        };
 
+        unsafe {
             ptr.add(0).write_volatile(attrs[0]);
             ptr.add(1).write_volatile(attrs[1]);
             ptr.add(2).write_volatile(attrs[2]);
@@ -89,8 +88,8 @@ impl Attributes {
     }
 
     pub fn set_x(&mut self, x: u16) -> &mut Self {
-        self.a1a.set_x(x.rem_euclid(1 << 9));
-        self.a1s.set_x(x.rem_euclid(1 << 9));
+        self.a1a.set_x(u9::new(x.rem_euclid(1 << 9)));
+        self.a1s.set_x(u9::new(x.rem_euclid(1 << 9)));
 
         self
     }
@@ -114,28 +113,29 @@ impl Attributes {
     }
 
     pub fn set_palette(&mut self, palette_id: u16) -> &mut Self {
-        self.a2.set_palette_bank(palette_id as u8);
+        self.a2.set_palette_bank(u4::new(palette_id as u8));
 
         self
     }
 
     pub fn set_affine_matrix(&mut self, affine_matrix_id: u16) -> &mut Self {
-        self.a1a.set_affine_index(affine_matrix_id as u8);
+        self.a1a.set_affine_index(u5::new(affine_matrix_id as u8));
 
         self
     }
 
     pub fn set_sprite(&mut self, sprite_id: u16, shape: u16, size: u16) -> &mut Self {
-        self.a2.set_tile_index(sprite_id);
-        self.a1a.set_size(size as u8);
-        self.a1s.set_size(size as u8);
-        self.a0.set_shape(shape as u8);
+        self.a2.set_tile_index(u10::new(sprite_id));
+        self.a1a.set_size(u2::new(size as u8));
+        self.a1s.set_size(u2::new(size as u8));
+        self.a0.set_shape(u2::new(shape as u8));
 
         self
     }
 }
 
-#[derive(BitfieldSpecifier, Clone, Copy, Debug, PartialEq, Eq)]
+#[bitsize(2)]
+#[derive(FromBits, Clone, Copy, Debug, PartialEq, Eq)]
 enum ObjectMode {
     Normal,
     Affine,
@@ -143,15 +143,16 @@ enum ObjectMode {
     AffineDouble,
 }
 
-#[derive(BitfieldSpecifier, Clone, Copy, Debug, PartialEq, Eq)]
-#[bits = 2]
+#[bitsize(2)]
+#[derive(TryFromBits, Clone, Copy, Debug, PartialEq, Eq)]
 enum GraphicsMode {
     Normal,
     AlphaBlending,
     Window,
 }
 
-#[derive(BitfieldSpecifier, Clone, Copy, Debug, PartialEq, Eq)]
+#[bitsize(1)]
+#[derive(FromBits, Clone, Copy, Debug, PartialEq, Eq)]
 enum ColourMode {
     Four,
     Eight,
@@ -162,49 +163,44 @@ enum ColourMode {
 #[allow(clippy::all)]
 #[allow(clippy::map_unwrap_or)]
 mod attributes {
-    use modular_bitfield::{
-        bitfield,
-        specifiers::{B10, B2, B3, B4, B5, B8, B9},
-    };
-
     use crate::display::Priority;
 
     use super::*;
-    #[bitfield]
-    #[derive(Clone, Copy, PartialEq, Eq, Debug, Default)]
+
+    #[bitsize(16)]
+    #[derive(TryFromBits, Clone, Copy, PartialEq, Eq, DebugBits, Default)]
     pub(super) struct ObjectAttribute0 {
-        pub y: B8,
+        pub y: u8,
         pub object_mode: ObjectMode,
         pub graphics_mode: GraphicsMode,
         pub mosaic: bool,
         pub colour_mode: ColourMode,
-        pub shape: B2,
+        pub shape: u2,
     }
 
-    #[bitfield]
-    #[derive(Clone, Copy, PartialEq, Eq, Debug, Default)]
+    #[bitsize(16)]
+    #[derive(FromBits, Clone, Copy, PartialEq, Eq, DebugBits, Default)]
     pub(super) struct ObjectAttribute1Standard {
-        pub x: B9,
-        #[skip]
-        __: B3,
+        pub x: u9,
+        __: u3,
         pub horizontal_flip: bool,
         pub vertical_flip: bool,
-        pub size: B2,
+        pub size: u2,
     }
 
-    #[bitfield]
-    #[derive(Clone, Copy, PartialEq, Eq, Debug, Default)]
+    #[bitsize(16)]
+    #[derive(FromBits, Clone, Copy, PartialEq, Eq, DebugBits, Default)]
     pub(super) struct ObjectAttribute1Affine {
-        pub x: B9,
-        pub affine_index: B5,
-        pub size: B2,
+        pub x: u9,
+        pub affine_index: u5,
+        pub size: u2,
     }
 
-    #[bitfield]
-    #[derive(Clone, Copy, PartialEq, Eq, Debug, Default)]
+    #[bitsize(16)]
+    #[derive(FromBits, Clone, Copy, PartialEq, Eq, DebugBits, Default)]
     pub(super) struct ObjectAttribute2 {
-        pub tile_index: B10,
+        pub tile_index: u10,
         pub priority: Priority,
-        pub palette_bank: B4,
+        pub palette_bank: u4,
     }
 }
diff --git a/book/games/pong/Cargo.lock b/book/games/pong/Cargo.lock
index 307eefe0..58d53b82 100644
--- a/book/games/pong/Cargo.lock
+++ b/book/games/pong/Cargo.lock
@@ -24,8 +24,8 @@ dependencies = [
  "agb_macros",
  "agb_sound_converter",
  "bare-metal",
+ "bilge",
  "bitflags 2.1.0",
- "modular-bitfield",
  "rustc-hash",
 ]
 
@@ -52,7 +52,7 @@ dependencies = [
  "image",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -61,7 +61,7 @@ version = "0.15.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -71,7 +71,7 @@ dependencies = [
  "hound",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -85,6 +85,12 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "arbitrary-int"
+version = "1.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a49f791c7c8885e8221d31bc3a34455b0fd869810d8ddff608dbe08a598f9d9"
+
 [[package]]
 name = "asefile"
 version = "0.3.5"
@@ -111,6 +117,28 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8fe8f5a8a398345e52358e18ff07cc17a568fbca5c6f73873d3a62056309603"
 
+[[package]]
+name = "bilge"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c97ac126908e16a5347eb83d7439c6638e22f026f852a3565ac4d91b02a7762b"
+dependencies = [
+ "arbitrary-int",
+ "bilge-impl",
+]
+
+[[package]]
+name = "bilge-impl"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16e5c47aa8db64c22c688a5ca26abbfe537fda96c4da3fcc6d7abe8cc12bc40a"
+dependencies = [
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -243,27 +271,6 @@ dependencies = [
  "adler",
 ]
 
-[[package]]
-name = "modular-bitfield"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a53d79ba8304ac1c4f9eb3b9d281f21f7be9d4626f72ce7df4ad8fbde4f38a74"
-dependencies = [
- "modular-bitfield-impl",
- "static_assertions",
-]
-
-[[package]]
-name = "modular-bitfield-impl"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a7d5f7076603ebc68de2dc6a650ec331a062a13abaa346975be747bbfa4b789"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "nohash"
 version = "0.2.0"
@@ -336,6 +343,29 @@ dependencies = [
  "agb",
 ]
 
+[[package]]
+name = "proc-macro-error"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
+dependencies = [
+ "proc-macro-error-attr",
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
+[[package]]
+name = "proc-macro-error-attr"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.56"
@@ -360,23 +390,6 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
-[[package]]
-name = "static_assertions"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
-
-[[package]]
-name = "syn"
-version = "1.0.109"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
 [[package]]
 name = "syn"
 version = "2.0.15"
diff --git a/examples/amplitude/Cargo.lock b/examples/amplitude/Cargo.lock
index 9e446c27..fd72895d 100644
--- a/examples/amplitude/Cargo.lock
+++ b/examples/amplitude/Cargo.lock
@@ -24,8 +24,8 @@ dependencies = [
  "agb_macros",
  "agb_sound_converter",
  "bare-metal",
+ "bilge",
  "bitflags 2.1.0",
- "modular-bitfield",
  "rustc-hash",
 ]
 
@@ -52,7 +52,7 @@ dependencies = [
  "image",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -61,7 +61,7 @@ version = "0.15.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -71,7 +71,7 @@ dependencies = [
  "hound",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -92,6 +92,12 @@ dependencies = [
  "agb",
 ]
 
+[[package]]
+name = "arbitrary-int"
+version = "1.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a49f791c7c8885e8221d31bc3a34455b0fd869810d8ddff608dbe08a598f9d9"
+
 [[package]]
 name = "asefile"
 version = "0.3.5"
@@ -118,6 +124,28 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8fe8f5a8a398345e52358e18ff07cc17a568fbca5c6f73873d3a62056309603"
 
+[[package]]
+name = "bilge"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c97ac126908e16a5347eb83d7439c6638e22f026f852a3565ac4d91b02a7762b"
+dependencies = [
+ "arbitrary-int",
+ "bilge-impl",
+]
+
+[[package]]
+name = "bilge-impl"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16e5c47aa8db64c22c688a5ca26abbfe537fda96c4da3fcc6d7abe8cc12bc40a"
+dependencies = [
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -250,27 +278,6 @@ dependencies = [
  "adler",
 ]
 
-[[package]]
-name = "modular-bitfield"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a53d79ba8304ac1c4f9eb3b9d281f21f7be9d4626f72ce7df4ad8fbde4f38a74"
-dependencies = [
- "modular-bitfield-impl",
- "static_assertions",
-]
-
-[[package]]
-name = "modular-bitfield-impl"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a7d5f7076603ebc68de2dc6a650ec331a062a13abaa346975be747bbfa4b789"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "nohash"
 version = "0.2.0"
@@ -336,6 +343,29 @@ dependencies = [
  "miniz_oxide 0.3.7",
 ]
 
+[[package]]
+name = "proc-macro-error"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
+dependencies = [
+ "proc-macro-error-attr",
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
+[[package]]
+name = "proc-macro-error-attr"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.56"
@@ -360,23 +390,6 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
-[[package]]
-name = "static_assertions"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
-
-[[package]]
-name = "syn"
-version = "1.0.109"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
 [[package]]
 name = "syn"
 version = "2.0.15"
diff --git a/examples/combo/Cargo.lock b/examples/combo/Cargo.lock
index 872b5a80..924becd4 100644
--- a/examples/combo/Cargo.lock
+++ b/examples/combo/Cargo.lock
@@ -24,8 +24,8 @@ dependencies = [
  "agb_macros",
  "agb_sound_converter",
  "bare-metal",
+ "bilge",
  "bitflags 2.1.0",
- "modular-bitfield",
  "rustc-hash",
 ]
 
@@ -52,7 +52,7 @@ dependencies = [
  "image",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -61,7 +61,7 @@ version = "0.15.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -71,7 +71,7 @@ dependencies = [
  "hound",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -92,6 +92,12 @@ dependencies = [
  "agb",
 ]
 
+[[package]]
+name = "arbitrary-int"
+version = "1.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a49f791c7c8885e8221d31bc3a34455b0fd869810d8ddff608dbe08a598f9d9"
+
 [[package]]
 name = "asefile"
 version = "0.3.5"
@@ -127,6 +133,28 @@ dependencies = [
  "byteorder",
 ]
 
+[[package]]
+name = "bilge"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c97ac126908e16a5347eb83d7439c6638e22f026f852a3565ac4d91b02a7762b"
+dependencies = [
+ "arbitrary-int",
+ "bilge-impl",
+]
+
+[[package]]
+name = "bilge-impl"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16e5c47aa8db64c22c688a5ca26abbfe537fda96c4da3fcc6d7abe8cc12bc40a"
+dependencies = [
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -310,27 +338,6 @@ dependencies = [
  "adler",
 ]
 
-[[package]]
-name = "modular-bitfield"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a53d79ba8304ac1c4f9eb3b9d281f21f7be9d4626f72ce7df4ad8fbde4f38a74"
-dependencies = [
- "modular-bitfield-impl",
- "static_assertions",
-]
-
-[[package]]
-name = "modular-bitfield-impl"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a7d5f7076603ebc68de2dc6a650ec331a062a13abaa346975be747bbfa4b789"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "nohash"
 version = "0.2.0"
@@ -396,6 +403,29 @@ dependencies = [
  "miniz_oxide 0.3.7",
 ]
 
+[[package]]
+name = "proc-macro-error"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
+dependencies = [
+ "proc-macro-error-attr",
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
+[[package]]
+name = "proc-macro-error-attr"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.56"
@@ -449,7 +479,7 @@ checksum = "291a097c63d8497e00160b166a967a4a79c64f3facdd01cbd7502231688d77df"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -463,23 +493,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "static_assertions"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
-
-[[package]]
-name = "syn"
-version = "1.0.109"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
 [[package]]
 name = "syn"
 version = "2.0.15"
diff --git a/examples/hyperspace-roll/Cargo.lock b/examples/hyperspace-roll/Cargo.lock
index 4f4b46e4..90cf00b6 100644
--- a/examples/hyperspace-roll/Cargo.lock
+++ b/examples/hyperspace-roll/Cargo.lock
@@ -24,8 +24,8 @@ dependencies = [
  "agb_macros",
  "agb_sound_converter",
  "bare-metal",
+ "bilge",
  "bitflags 2.1.0",
- "modular-bitfield",
  "rustc-hash",
 ]
 
@@ -52,7 +52,7 @@ dependencies = [
  "image",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -61,7 +61,7 @@ version = "0.15.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -71,7 +71,7 @@ dependencies = [
  "hound",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -85,6 +85,12 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "arbitrary-int"
+version = "1.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a49f791c7c8885e8221d31bc3a34455b0fd869810d8ddff608dbe08a598f9d9"
+
 [[package]]
 name = "asefile"
 version = "0.3.5"
@@ -111,6 +117,28 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8fe8f5a8a398345e52358e18ff07cc17a568fbca5c6f73873d3a62056309603"
 
+[[package]]
+name = "bilge"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c97ac126908e16a5347eb83d7439c6638e22f026f852a3565ac4d91b02a7762b"
+dependencies = [
+ "arbitrary-int",
+ "bilge-impl",
+]
+
+[[package]]
+name = "bilge-impl"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16e5c47aa8db64c22c688a5ca26abbfe537fda96c4da3fcc6d7abe8cc12bc40a"
+dependencies = [
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -250,27 +278,6 @@ dependencies = [
  "adler",
 ]
 
-[[package]]
-name = "modular-bitfield"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a53d79ba8304ac1c4f9eb3b9d281f21f7be9d4626f72ce7df4ad8fbde4f38a74"
-dependencies = [
- "modular-bitfield-impl",
- "static_assertions",
-]
-
-[[package]]
-name = "modular-bitfield-impl"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a7d5f7076603ebc68de2dc6a650ec331a062a13abaa346975be747bbfa4b789"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "nohash"
 version = "0.2.0"
@@ -336,6 +343,29 @@ dependencies = [
  "miniz_oxide 0.3.7",
 ]
 
+[[package]]
+name = "proc-macro-error"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
+dependencies = [
+ "proc-macro-error-attr",
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
+[[package]]
+name = "proc-macro-error-attr"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.56"
@@ -360,23 +390,6 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
-[[package]]
-name = "static_assertions"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
-
-[[package]]
-name = "syn"
-version = "1.0.109"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
 [[package]]
 name = "syn"
 version = "2.0.15"
diff --git a/examples/the-hat-chooses-the-wizard/Cargo.lock b/examples/the-hat-chooses-the-wizard/Cargo.lock
index fe336dec..d59342aa 100644
--- a/examples/the-hat-chooses-the-wizard/Cargo.lock
+++ b/examples/the-hat-chooses-the-wizard/Cargo.lock
@@ -24,8 +24,8 @@ dependencies = [
  "agb_macros",
  "agb_sound_converter",
  "bare-metal",
+ "bilge",
  "bitflags 2.1.0",
- "modular-bitfield",
  "rustc-hash",
 ]
 
@@ -52,7 +52,7 @@ dependencies = [
  "image",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -61,7 +61,7 @@ version = "0.15.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -71,7 +71,7 @@ dependencies = [
  "hound",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -85,6 +85,12 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "arbitrary-int"
+version = "1.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a49f791c7c8885e8221d31bc3a34455b0fd869810d8ddff608dbe08a598f9d9"
+
 [[package]]
 name = "asefile"
 version = "0.3.5"
@@ -111,6 +117,28 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8fe8f5a8a398345e52358e18ff07cc17a568fbca5c6f73873d3a62056309603"
 
+[[package]]
+name = "bilge"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c97ac126908e16a5347eb83d7439c6638e22f026f852a3565ac4d91b02a7762b"
+dependencies = [
+ "arbitrary-int",
+ "bilge-impl",
+]
+
+[[package]]
+name = "bilge-impl"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16e5c47aa8db64c22c688a5ca26abbfe537fda96c4da3fcc6d7abe8cc12bc40a"
+dependencies = [
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -249,27 +277,6 @@ dependencies = [
  "adler",
 ]
 
-[[package]]
-name = "modular-bitfield"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a53d79ba8304ac1c4f9eb3b9d281f21f7be9d4626f72ce7df4ad8fbde4f38a74"
-dependencies = [
- "modular-bitfield-impl",
- "static_assertions",
-]
-
-[[package]]
-name = "modular-bitfield-impl"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a7d5f7076603ebc68de2dc6a650ec331a062a13abaa346975be747bbfa4b789"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "nohash"
 version = "0.2.0"
@@ -335,6 +342,29 @@ dependencies = [
  "miniz_oxide 0.3.7",
 ]
 
+[[package]]
+name = "proc-macro-error"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
+dependencies = [
+ "proc-macro-error-attr",
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
+[[package]]
+name = "proc-macro-error-attr"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.56"
@@ -382,7 +412,7 @@ checksum = "291a097c63d8497e00160b166a967a4a79c64f3facdd01cbd7502231688d77df"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -396,23 +426,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "static_assertions"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
-
-[[package]]
-name = "syn"
-version = "1.0.109"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
 [[package]]
 name = "syn"
 version = "2.0.15"
diff --git a/examples/the-purple-night/Cargo.lock b/examples/the-purple-night/Cargo.lock
index 51267c67..3fafe335 100644
--- a/examples/the-purple-night/Cargo.lock
+++ b/examples/the-purple-night/Cargo.lock
@@ -24,8 +24,8 @@ dependencies = [
  "agb_macros",
  "agb_sound_converter",
  "bare-metal",
+ "bilge",
  "bitflags 2.1.0",
- "modular-bitfield",
  "rustc-hash",
 ]
 
@@ -52,7 +52,7 @@ dependencies = [
  "image",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -61,7 +61,7 @@ version = "0.15.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -71,7 +71,7 @@ dependencies = [
  "hound",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn",
 ]
 
 [[package]]
@@ -85,6 +85,12 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "arbitrary-int"
+version = "1.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a49f791c7c8885e8221d31bc3a34455b0fd869810d8ddff608dbe08a598f9d9"
+
 [[package]]
 name = "asefile"
 version = "0.3.5"
@@ -120,6 +126,28 @@ dependencies = [
  "byteorder",
 ]
 
+[[package]]
+name = "bilge"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c97ac126908e16a5347eb83d7439c6638e22f026f852a3565ac4d91b02a7762b"
+dependencies = [
+ "arbitrary-int",
+ "bilge-impl",
+]
+
+[[package]]
+name = "bilge-impl"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16e5c47aa8db64c22c688a5ca26abbfe537fda96c4da3fcc6d7abe8cc12bc40a"
+dependencies = [
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.3.2"
@@ -279,27 +307,6 @@ dependencies = [
  "adler",
 ]
 
-[[package]]
-name = "modular-bitfield"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a53d79ba8304ac1c4f9eb3b9d281f21f7be9d4626f72ce7df4ad8fbde4f38a74"
-dependencies = [
- "modular-bitfield-impl",
- "static_assertions",
-]
-
-[[package]]
-name = "modular-bitfield-impl"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a7d5f7076603ebc68de2dc6a650ec331a062a13abaa346975be747bbfa4b789"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "nohash"
 version = "0.2.0"
@@ -365,6 +372,29 @@ dependencies = [
  "miniz_oxide 0.3.7",
 ]
 
+[[package]]
+name = "proc-macro-error"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
+dependencies = [
+ "proc-macro-error-attr",
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
+[[package]]
+name = "proc-macro-error-attr"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.56"
@@ -395,23 +425,6 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
-[[package]]
-name = "static_assertions"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
-
-[[package]]
-name = "syn"
-version = "1.0.109"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
 [[package]]
 name = "syn"
 version = "2.0.15"