diff --git a/dump.py b/dump.py
new file mode 100644
index 0000000..9ea65e1
--- /dev/null
+++ b/dump.py
@@ -0,0 +1,67 @@
+import struct
+import sys
+
+fields = [
+    ("game title", 0x000, 0xc),
+    ("game code",  0x00c, 0x4),
+    ("maker code", 0x010, 0x2),
+    ("main unit code", 0x012, 0x1),
+    ("device type", 0x013, 0x1),
+    ("device capacity", 0x014, 0x1),
+    ("reserved 015", 0x015, 0x8),
+    ("specific", 0x01d, 0x1),
+    ("rom version", 0x01e, 0x1),
+    ("reserved 01f", 0x01f, 0x1),
+    ("arm9 resident module rom offset", 0x020, 0x4),
+    ("arm9 resident module entry address", 0x024, 0x4),
+    ("arm9 resident module ram address", 0x028, 0x4),
+    ("arm9 resident module rom size", 0x02c, 0x4),
+    ("arm7 resident module rom offset", 0x030, 0x4),
+    ("arm7 resident module entry address", 0x034, 0x4),
+    ("arm7 resident module ram address", 0x038, 0x4),
+    ("arm7 resident module rom size", 0x03c, 0x4),
+    ("file name table rom offset", 0x040, 0x4),
+    ("file name table rom size", 0x044, 0x4),
+    ("file allocation table rom offset", 0x048, 0x4),
+    ("file allocation table rom size", 0x04c, 0x4),
+    ("arm9 overlay table rom offset", 0x050, 0x4),
+    ("arm9 overlay table rom size", 0x054, 0x4),
+    ("arm7 overlay table rom offset", 0x058, 0x4),
+    ("arm7 overlay table rom size", 0x05c, 0x4),
+    ("rom control information 060", 0x060, 0x4),
+    ("rom control information 064", 0x064, 0x4),
+    ("banner file rom offset", 0x068, 0x4),
+    ("secure area crc", 0x06c, 0x2),
+    ("rom control information 06e", 0x06e, 0x2),
+    ("arm9 auto load list ram address", 0x070, 0x4),
+    ("arm7 auto load list ram address", 0x074, 0x4),
+    ("rom information reserved region", 0x078, 0x8),
+    ("application", 0x080, 0x4),
+    ("rom header size", 0x084, 0x4),
+    ("arm9 module parameter address", 0x088, 0x4),
+    ("arm7 module parameter address", 0x08c, 0x4),
+]
+
+with open(sys.argv[1], 'rb') as f:
+    buf = f.read()
+
+file_offset = 0
+
+for name, offset, size in fields:
+    assert offset == file_offset, (hex(offset), hex(file_offset))
+    file_offset += size
+    pad = ' ' * (35 - len(name))
+    print(f"{name}: {pad}", end='')
+    if size < 16:
+        for i in range(size):
+            b = buf[offset + i]
+            print(f'{b:02x}', end='')
+
+    pad = ' ' * (17 * 2 - size * 2)
+    if size == 4:
+        n, = struct.unpack('<I', buf[offset:offset+size])
+        print(pad, f"0x{n:08x}", end='')
+    if size == 2:
+        n, = struct.unpack('<H', buf[offset:offset+size])
+        print(pad, f"0x{n:04x}", end='')
+    print()