Fix retroarch cores for VB, NGP and PCFX

emus/settings.py

@@ -302,7 +302,7 @@ GAME_SYSTEM_DEFAULTS = {
     },
     "ngp": {
         "name": "Neo Geo Pocket",
-        "retroarch_core": "fbneo",
+        "retroarch_core": "mednafen_ngp",
     },
     "neogeo": {
         "name": "Neo Geo",
@@ -310,7 +310,7 @@ GAME_SYSTEM_DEFAULTS = {
     },
     "ngpc": {
         "name": "Neo Geo Pocket Color",
-        "retroarch_core": "fbneo",
+        "retroarch_core": "mednafen_ngp",
     },
     "nes": {
         "name": "Nintendo",
@@ -323,6 +323,11 @@ GAME_SYSTEM_DEFAULTS = {
         "color": "55B4CC",
         "retroarch_core": "mednafen_supergrafx",
     },
+    "pcengine": {
+        "name": "PC FX",
+        "color": "55B4CC",
+        "retroarch_core": "mednafen_pcfx",
+    },
     "ps2": {
         "name": "Playstation 2",
         "color": "111CAA",
@@ -372,7 +377,7 @@ GAME_SYSTEM_DEFAULTS = {
     "virtualboy": {
         "name": "Virtual Boy",
         "color": "99AA11",
-        "retroarch_core": "virtualboy",
+        "retroarch_core": "mednafen_vb",
     },
     "wii": {
         "name": "Wii",