feat: re-profile 37 emulators with upstream verification

source-verified core_classification, upstream URLs, validation fields,
and hle_fallback flags. trimmed verbose notes. removed phantom files
(azahar boot9/sector0x96). added bsnes2014 variant profiles.

emulators/a5200.yml

@@ -1,7 +1,9 @@
 emulator: a5200
 type: libretro
+core_classification: community_fork
 source: "https://github.com/libretro/a5200"
-profiled_date: "2026-03-18"
+upstream: "https://github.com/alekmaul/a5200"
+profiled_date: "2026-03-22"
 core_version: "2.0.2"
 display_name: "Atari - 5200 (a5200)"
 cores:
@@ -9,23 +11,25 @@ cores:
 systems:
   - atari-5200
 
-# a5200 is a dedicated Atari 5200 emulator forked from Atari800/Atari++ codebase.
-# It loads the official 5200 OS ROM from <system_dir>/5200.rom (2048 bytes, mapped
-# to memory at 0xF800-0xFFFF via MEMORY_InitialiseMachine).
+# Dedicated Atari 5200 emulator forked from Atari800 2.0.2 codebase by Alekmaul
+# for GCW Zero. Libretro port later enhanced by wavemotion-dave with Altirra OS
+# fallback, Super Cart support, frame blending and analog input.
 #
-# If 5200.rom is missing or the user selects "internal" via core option "a5200_bios",
-# the core falls back to Altirra 5200 OS, an open-source replacement compiled from
-# Altirra-3.20-test4 (altirra_5200_os.c). The fallback has reduced compatibility
-# compared to the original Atari OS ROM.
+# Loads 5200 OS ROM from <system_dir>/5200.rom (2048 bytes, mapped to 0xF800-0xFFFF
+# via MEMORY_InitialiseMachine). If missing or user selects "internal" via core
+# option "a5200_bios", falls back to built-in Altirra 5200 OS (altirra_5200_os.c,
+# compiled from Altirra-3.20-test4).
 #
-# BIOS loading (libretro.c:409-500):
+# BIOS loading (libretro.c:408-499):
 #   1. check_bios_variable() reads core option "a5200_bios" (official/internal)
-#   2. load_bios() attempts to read <system_dir>/5200.rom (0x800 bytes)
-#   3. On failure or "internal" selected: memcpy from ROM_altirra_5200_os fallback
+#   2. load_bios() reads <system_dir>/5200.rom, validates size == 0x800
+#   3. On failure or "internal" selected: memcpy from ROM_altirra_5200_os
 #
-# Cartridge detection (atari.c:169-236):
-#   Auto-detects cart type from header bytes and size. ROM database in cartridge.c
-#   maps MD5 hashes to cart types (standard 8K/16K/32K/40K, bounty bob, super cart).
+# Upstream divergence: alekmaul's standalone requires 5200.rom (exits on missing).
+# Libretro port makes it optional via Altirra fallback.
+#
+# Cart type detection via MD5 database in cartridge.c (standard 4K-512K, bounty bob,
+# super cart, EE banked). Unknown ROMs detected by size heuristic.
 
 files:
   - name: "5200.rom"
@@ -33,19 +37,8 @@ files:
     size: 2048
     required: false
     hle_fallback: true
+    validation: [size]
     note: >
-      Atari 5200 OS ROM. Provides the built-in OS routines used by all 5200
-      cartridges. Without it, the core uses the Altirra open-source replacement
-      which has lower compatibility with some games. Core option "a5200_bios"
-      controls whether to use this file or the internal fallback.
-    source_ref: "libretro/libretro.c:58-59, libretro/libretro.c:409-500, emu/memory.c:46"
-
-notes:
-  altirra_fallback: >
-    The built-in Altirra 5200 OS (from altirra_5200_os.c, 0x800 bytes) is a free
-    replacement that works for most games but some titles require the original ROM
-    for full compatibility. The core displays a notification when falling back.
-  cart_db: >
-    cartridge.c contains an MD5-based ROM database for automatic cart type detection
-    (standard, EE banked, bounty bob, super cart variants). Unknown ROMs are detected
-    by size heuristic.
+      Atari 5200 OS ROM. Core option "a5200_bios" controls official vs internal.
+      Altirra replacement has lower compatibility with some titles.
+    source_ref: "libretro/libretro.c:58-59, libretro/libretro.c:408-499, emu/memory.c:46"