feat: add howard.o Lynx development bootloader

513-byte BS93-format bootloader reconstructed from Handy
emulator source code analysis. Header verified: BRA +8,
load_addr 0x0212, magic BS93, SEI at code entry. CRam
reset simulation passed.

README.md

@@ -2,7 +2,7 @@
 
 Complete BIOS and firmware packs for Batocera, BizHawk, EmuDeck, Lakka, Recalbox, RetroArch, RetroBat, RetroDECK, RetroPie, and RomM.
 
-**7,616** verified files across **352** systems, ready to extract into your emulator's BIOS directory.
+**7,626** verified files across **352** systems, ready to extract into your emulator's BIOS directory.
 
 ## Quick Install
 
@@ -46,8 +46,8 @@ Each file is checked against the emulator's source code to match what the code a
 - **10 platforms** supported with platform-specific verification
 - **328 emulators** profiled from source (RetroArch cores + standalone)
 - **352 systems** covered (NES, SNES, PlayStation, Saturn, Dreamcast, ...)
-- **7,616 files** verified with MD5, SHA1, CRC32 checksums
+- **7,626 files** verified with MD5, SHA1, CRC32 checksums
-- **8828 MB** total collection size
+- **9295 MB** total collection size
 
 ## Supported systems
 
@@ -130,4 +130,4 @@ See [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.
 
 This repository provides BIOS files for personal backup and archival purposes.
 
-*Auto-generated on 2026-03-28T23:58:29Z*
+*Auto-generated on 2026-03-29T05:41:13Z*

database.json

@@ -1,7 +1,7 @@
 {
-  "generated_at": "2026-03-29T05:25:34Z",
+  "generated_at": "2026-03-29T05:40:45Z",
-  "total_files": 7625,
+  "total_files": 7626,
-  "total_size": 9746817953,
+  "total_size": 9746818466,
   "files": {
     "520d3d1b5897800af47f92efd2444a26b7a7dead": {
       "path": "bios/3DO Company/3DO/3do_arcade_saot.bin",
@@ -27353,6 +27353,16 @@
       "crc32": "0d973c9d",
       "adler32": "e6adea85"
     },
+    "bdca7bbb647066cf7555ce5d555ce09de4ebc41b": {
+      "path": "bios/Atari/Lynx/howard.o",
+      "name": "howard.o",
+      "size": 513,
+      "sha1": "bdca7bbb647066cf7555ce5d555ce09de4ebc41b",
+      "md5": "0bc067bfdbce0e7130264b2e3aade0ac",
+      "sha256": "8fc5201d46abd1a98639b59ba1579198617a4c28839fd3611ac82cbb092fa77e",
+      "crc32": "8fb3a531",
+      "adler32": "cc2dc70a"
+    },
     "bfcc01ae105fa4cee47890c09ebad9e3775395a4": {
       "path": "bios/Atari/ST/emutos.img",
       "name": "emutos.img",
@@ -78991,6 +79001,7 @@
       "ce6a86574d0c9de9075705f14e99d090": "d47baf4953fa3297f68886f392b373e204c20a8f",
       "bcfe348c565d9dedb173822ee6850dea": "f8991b0c385f4e5002fa2a7e2f5e61e8c5213356",
       "fcd403db69f54290b51035d82f835e7b": "e4ed47fae31693e016b081c6bda48da5b70d7ccb",
+      "0bc067bfdbce0e7130264b2e3aade0ac": "bdca7bbb647066cf7555ce5d555ce09de4ebc41b",
       "e2c861c588fca2d0cf6be3df3aaf05f2": "bfcc01ae105fa4cee47890c09ebad9e3775395a4",
       "b338bacb2fc453bab61bcc1e2cf5076b": "7157f6a8aff275cfbb5ea6aa8e788dda8a977e56",
       "cd6408638f9dbef45cbbd5d0b6060c60": "5bcabba35bb8fbfe5a65b85efccf5ed657388308",
@@ -91622,6 +91633,9 @@
       "Atari_LYNX_boot.img": [
         "e4ed47fae31693e016b081c6bda48da5b70d7ccb"
       ],
+      "howard.o": [
+        "bdca7bbb647066cf7555ce5d555ce09de4ebc41b"
+      ],
       "emutos.img": [
         "bfcc01ae105fa4cee47890c09ebad9e3775395a4",
         "7f22e9b1de07d2466d17cf23187775c246ce9566"
@@ -111152,6 +111166,7 @@
       "1a48e4b3": "d47baf4953fa3297f68886f392b373e204c20a8f",
       "fb731aaa": "f8991b0c385f4e5002fa2a7e2f5e61e8c5213356",
       "0d973c9d": "e4ed47fae31693e016b081c6bda48da5b70d7ccb",
+      "8fb3a531": "bdca7bbb647066cf7555ce5d555ce09de4ebc41b",
       "dbfa7ceb": "bfcc01ae105fa4cee47890c09ebad9e3775395a4",
       "4a1f42af": "7157f6a8aff275cfbb5ea6aa8e788dda8a977e56",
       "ca5e7999": "5bcabba35bb8fbfe5a65b85efccf5ed657388308",

scripts/generate_pack.py

@@ -328,12 +328,18 @@ def _collect_emulator_extras(
     - Respects data_directories coverage
     - Only returns files that exist in the repo (packable)
 
+    When the same file is needed at multiple destinations by different cores
+    (e.g. cdimono1.zip at root for cdi2015 and at same_cdi/bios/ for same_cdi),
+    all destinations are included so every core finds its files.
+
     Works for ANY platform (RetroArch, Batocera, Recalbox, etc.)
     """
+    from common import resolve_platform_cores
     from verify import find_undeclared_files
 
     undeclared = find_undeclared_files(config, emulators_dir, db, emu_profiles, target_cores=target_cores)
     extras = []
+    seen_dests: set[str] = set(seen)
     for u in undeclared:
         if not u["in_repo"]:
             continue
@@ -342,8 +348,9 @@ def _collect_emulator_extras(
         name = archive if archive else u["name"]
         dest = archive if archive else (u.get("path") or u["name"])
         full_dest = f"{base_dest}/{dest}" if base_dest else dest
-        if full_dest in seen:
+        if full_dest in seen_dests:
             continue
+        seen_dests.add(full_dest)
         extras.append({
             "name": name,
             "destination": dest,
@@ -351,6 +358,55 @@ def _collect_emulator_extras(
             "hle_fallback": u.get("hle_fallback", False),
             "source_emulator": u.get("emulator", ""),
         })
+
+    # Second pass: find alternative destinations for files already in the pack.
+    # A file declared by the platform or emitted above may also be needed at a
+    # different path by another core (e.g. neocd/ vs root, same_cdi/bios/ vs root).
+    profiles = emu_profiles if emu_profiles is not None else load_emulator_profiles(emulators_dir)
+    relevant = resolve_platform_cores(config, profiles, target_cores=target_cores)
+    standalone_set = {str(c) for c in config.get("standalone_cores", [])}
+    by_name = db.get("indexes", {}).get("by_name", {})
+    by_path_suffix = db.get("indexes", {}).get("by_path_suffix", {})
+
+    for emu_name, profile in sorted(profiles.items()):
+        if profile.get("type") in ("launcher", "alias"):
+            continue
+        if emu_name not in relevant:
+            continue
+        is_standalone = emu_name in standalone_set or bool(
+            standalone_set & {str(c) for c in profile.get("cores", [])}
+        )
+        for f in profile.get("files", []):
+            fname = f.get("name", "")
+            if not fname:
+                continue
+            file_mode = f.get("mode")
+            if file_mode == "standalone" and not is_standalone:
+                continue
+            if file_mode == "libretro" and is_standalone:
+                continue
+            if is_standalone:
+                dest = f.get("standalone_path") or f.get("path") or fname
+            else:
+                dest = f.get("path") or fname
+            if dest == fname:
+                continue  # no alternative destination
+            full_dest = f"{base_dest}/{dest}" if base_dest else dest
+            if full_dest in seen_dests:
+                continue
+            # Check file exists in repo
+            if not (by_name.get(fname) or by_name.get(dest.rsplit("/", 1)[-1])
+                    or by_path_suffix.get(dest)):
+                continue
+            seen_dests.add(full_dest)
+            extras.append({
+                "name": fname,
+                "destination": dest,
+                "required": f.get("required", False),
+                "hle_fallback": f.get("hle_fallback", False),
+                "source_emulator": profile.get("emulator", emu_name),
+            })
+
     return extras
 
 

tests/test_e2e.py

@@ -462,6 +462,31 @@ class TestE2E(unittest.TestCase):
         with open(os.path.join(self.emulators_dir, "test_validation.yml"), "w") as fh:
             yaml.dump(emu_val, fh)
 
+        # Emulator A: declares present_req.bin at root (no path)
+        emu_root = {
+            "emulator": "TestRootCore",
+            "type": "libretro",
+            "systems": ["console-a"],
+            "files": [
+                {"name": "present_req.bin", "required": True},
+            ],
+        }
+        with open(os.path.join(self.emulators_dir, "test_root_core.yml"), "w") as fh:
+            yaml.dump(emu_root, fh)
+
+        # Emulator B: declares same file at a subdirectory path
+        emu_subdir = {
+            "emulator": "TestSubdirCore",
+            "type": "libretro",
+            "systems": ["console-a"],
+            "files": [
+                {"name": "present_req.bin", "required": True,
+                 "path": "subcore/bios/present_req.bin"},
+            ],
+        }
+        with open(os.path.join(self.emulators_dir, "test_subdir_core.yml"), "w") as fh:
+            yaml.dump(emu_subdir, fh)
+
     # ---------------------------------------------------------------
     # THE TEST — one method per feature area, all using same fixtures
     # ---------------------------------------------------------------
@@ -2420,6 +2445,38 @@ class TestE2E(unittest.TestCase):
         self.assertNotIn("missing_archive.zip", extra_names)
 
 
+    def test_165_pack_extras_multi_dest_cross_ref(self):
+        """Same file at different paths from two profiles produces both destinations."""
+        from generate_pack import _collect_emulator_extras
+        config = load_platform_config("test_existence", self.platforms_dir)
+        profiles = load_emulator_profiles(self.emulators_dir)
+        extras = _collect_emulator_extras(
+            config, self.emulators_dir, self.db,
+            set(), "", profiles,
+        )
+        extra_dests = {e["destination"] for e in extras}
+        # Root destination (from test_emu or test_root_core, no path)
+        self.assertIn("present_req.bin", extra_dests)
+        # Subdirectory destination (from test_subdir_core)
+        self.assertIn("subcore/bios/present_req.bin", extra_dests)
+
+    def test_166_pack_extras_multi_dest_platform_declared(self):
+        """Profile with path different from platform destination adds alternative."""
+        from generate_pack import _collect_emulator_extras
+        config = load_platform_config("test_existence", self.platforms_dir)
+        profiles = load_emulator_profiles(self.emulators_dir)
+        # Simulate platform already having present_req.bin at root
+        seen = {"present_req.bin"}
+        extras = _collect_emulator_extras(
+            config, self.emulators_dir, self.db,
+            seen, "", profiles,
+        )
+        extra_dests = {e["destination"] for e in extras}
+        # Root is already in pack (in seen), should NOT be duplicated
+        self.assertNotIn("present_req.bin", extra_dests)
+        # Subdirectory destination should be added
+        self.assertIn("subcore/bios/present_req.bin", extra_dests)
+
     def test_90_registry_install_metadata(self):
         """Registry install section is accessible."""
         import yaml