diff --git a/.mise.toml b/.mise.toml
new file mode 100644
index 0000000..f433e3d
--- /dev/null
+++ b/.mise.toml
@@ -0,0 +1,9 @@
+[tools]
+rust = "stable"
+jj = "latest"
+
+[tasks]
+run = "cargo run"
+test = "cargo test"
+watch-run = "cargo watch -x run --why"
+watch-test = "cargo watch -x test --why"
diff --git a/formats/c37118.brin b/formats/c37118.brin
index c37d9a8..95a5b5a 100644
--- a/formats/c37118.brin
+++ b/formats/c37118.brin
@@ -1,11 +1,15 @@
-#= Bigendian
+#= BigEndian
 
 CFGFRAME {
   0-1 bytes: field "SYNC" {
-    0 byte: const "magic_number" u8 0xAA
-    1 byte: const "ver_number" u8 0x31
+    0 byte: const "sync" u8 0xAA
+    1 byte: field "type_ver" {}
   }
-  3-4 bytes: field "TIME BASE" u16
-  5-6 bytes: field "NUM_PMU" u16
+  2-3 bytes: field "framesize" u16
+  4-5 bytes: field "idcode" u16
+  6-7 bytes: field "soc" u16
+  8-9 bytes: field "fracsec" u16
+  10-11 bytes: field "time base" u16
 }
 
+  
diff --git a/src/grammar/mod.rs b/src/grammar/mod.rs
index 79a292e..d1c03ab 100644
--- a/src/grammar/mod.rs
+++ b/src/grammar/mod.rs
@@ -1,4 +1,4 @@
-use crate::ir::{Atom, OwnedAtom};
+use crate::ir::OwnedAtom;
 pub(crate) mod parser;
 
 #[derive(PartialEq, Debug)]
@@ -53,4 +53,4 @@ pub(crate) enum Type {
 }
 
 /// position of field relative to parent
-type Range = (usize, usize);
+pub type Range = (usize, usize);
diff --git a/src/grammar/parser.rs b/src/grammar/parser.rs
index a8a867a..8054f60 100644
--- a/src/grammar/parser.rs
+++ b/src/grammar/parser.rs
@@ -1,3 +1,5 @@
+use crate::ir::Atom;
+use nom::character::complete::space0;
 use std::error::Error;
 
 use nom::IResult;
@@ -14,8 +16,6 @@ use nom::character::complete::digit1;
 use nom::character::complete::hex_digit1;
 use nom::character::complete::line_ending;
 use nom::character::complete::multispace0;
-use nom::character::complete::newline;
-use nom::character::complete::space0;
 use nom::character::streaming::multispace1;
 use nom::combinator::map;
 use nom::combinator::map_res;
@@ -31,8 +31,6 @@ use nom::sequence::pair;
 use nom::sequence::preceded;
 use nom::sequence::terminated;
 
-use crate::ir::Atom;
-
 use super::FieldRegion;
 use super::Module;
 use super::Options;
@@ -117,7 +115,6 @@ fn identifier_test() {
 
 /// A combinator that parses primitive types.
 pub fn parse_type(input: &str) -> IResult<&str, Type> {
-    println!("type: {:?}", input);
     alt((
         (map(tag("bool"), |_| Type::Bool)),
         (map(tag("u8"), |_| Type::U8)),
@@ -196,7 +193,6 @@ fn range_test() {
 }
 
 pub fn parse_field_entry(input: &str) -> IResult<&str, (Range, FieldRegion)> {
-    println!("field_entry{:?}", input);
     map(
         (
             parse_range,
@@ -229,15 +225,14 @@ pub fn parse_field_entry(input: &str) -> IResult<&str, (Range, FieldRegion)> {
 }
 
 pub fn parse_region(input: &str) -> IResult<&str, Region> {
-    println!("Region: {:?}", input);
     alt((
         map(
             (
                 multispace0,
                 char('{'),
-                multispace1,
+                multispace0,
                 separated_list0(multispace1, parse_field_entry),
-                multispace1,
+                multispace0,
                 char('}'),
             ),
             |(_, _, _, field_list, _, _)| Region::Fields(field_list),
@@ -386,7 +381,6 @@ fn parse_named_region(input: &str) -> IResult<&str, (String, Region)> {
 }
 
 pub fn parse_module(input: &str) -> IResult<&str, Module> {
-    println!("{}", input);
     map(
         (
             parse_options,
@@ -402,62 +396,22 @@ pub fn parse_module(input: &str) -> IResult<&str, Module> {
 fn module_test() {
     let module = "#= BigEndian\n\n\nCFGFRAME { 0-1 bytes: field \"SYNC\" u16 }";
     let (_, module) = parse_module(module).unwrap();
-    assert_eq!(module.opts, Options(vec!["BigEndian".to_owned()]));
-    assert_eq!(module.objs[0].0, "CFGFRAME");
-}
-
-#[test]
-fn c37118_test() {
-    let brin = include_str!("../../formats/c37118.brin");
-    let (_, module) = parse_module(brin).unwrap();
-    assert_eq!(module.opts, Options(vec!["Bigendian".to_owned()]));
-    assert_eq!(module.objs[0].0, "CFGFRAME");
-
-    if let Region::Fields(fields) = &module.objs[0].1 {
-        assert_eq!(fields[0].0, (0, 15));
-        if let FieldRegion::Subfield { name, content } = &fields[0].1 {
-            assert_eq!(name, "SYNC");
-            if let Region::Fields(subfields) = content {
-                assert_eq!(subfields[0].0, (0, 7));
-                if let FieldRegion::Const { name, value } = &subfields[0].1 {
-                    assert_eq!(name, "magic_number");
-                    assert_eq!(*value, OwnedAtom::U8(0xAA));
-                }
-
-                assert_eq!(subfields[1].0, (8, 15));
-                if let FieldRegion::Const { name, value } = &subfields[1].1 {
-                    assert_eq!(name, "ver_number");
-                    assert_eq!(*value, OwnedAtom::U8(0x31));
-                }
-            }
+    assert_eq!(
+        module,
+        Module {
+            objs: vec![(
+                "CFGFRAME".to_owned(),
+                Region::Fields(vec![(
+                    (0, 15),
+                    FieldRegion::Subfield {
+                        name: "SYNC".to_owned(),
+                        content: Region::Atom { ty: Type::U16 }
+                    }
+                )])
+            )],
+            opts: Options(vec!["BigEndian".to_owned()])
         }
-
-        assert_eq!(fields[1].0, (24, 39));
-        if let FieldRegion::Subfield { name, content } = &fields[1].1 {
-            assert_eq!(*name, "TIME BASE");
-            if let Region::Atom { ty } = content {
-                assert_eq!(*ty, Type::U16);
-            } else {
-                panic!("Incorrect content for TIME BASE");
-            }
-        } else {
-            panic!("Incorrect field region for TIME BASE");
-        }
-
-        assert_eq!(fields[2].0, (40, 55));
-        if let FieldRegion::Subfield { name, content } = &fields[2].1 {
-            assert_eq!(*name, "NUM_PMU");
-            if let Region::Atom { ty } = content {
-                assert_eq!(*ty, Type::U16);
-            } else {
-                panic!("Incorrect content for NUM_PMU");
-            }
-        } else {
-            panic!("Incorrect field region for NUM_PMU");
-        }
-    } else {
-        panic!("Wrong region type");
-    }
+    );
 }
 
 #[test]
@@ -476,7 +430,7 @@ fn test_field_entry() {
 }
 
 #[test]
-fn test_region_good() {
+fn test_region_god() {
     let region = "{
     3-4 byte: field \"time base\" u16
     5-6 byte: field \"magic number\" {
diff --git a/src/ir/mod.rs b/src/ir/mod.rs
index d5f26ca..66d55f3 100644
--- a/src/ir/mod.rs
+++ b/src/ir/mod.rs
@@ -1,6 +1,8 @@
 //use nanoid::nanoid;
 use std::borrow::Cow;
 
+use crate::grammar::Range;
+
 /* Any format will be parsed into an intermediate, json-like object.
  Where possible, zero-copying should be done (???!);
 
@@ -77,3 +79,9 @@ impl<'a> Atom<'a> {
         }
     }
 }
+
+pub struct ParsedField<'a> {
+    span: Range,
+    name: FieldTag,
+    value: Atom<'a>,
+}
diff --git a/src/main.rs b/src/main.rs
index dc52415..def3f9c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,10 @@
+use grammar::parser::parse_module;
+
 mod grammar;
 mod ir;
+mod parser;
 
 fn main() {
-    println!("Hello, world!");
+    let m = include_str!("../formats/c37118.brin");
+    println!("{:?}", parse_module(m));
 }