diff --git a/Cart_Reader/5200.ino b/Cart_Reader/5200.ino
index 2b881d4..fb4f0ec 100644
--- a/Cart_Reader/5200.ino
+++ b/Cart_Reader/5200.ino
@@ -54,6 +54,12 @@
 #define DISABLE_8000 PORTH |= (1 << 6)  // ROM SELECT 8000-BFFF
 #define ENABLE_8000 PORTH &= ~(1 << 6)
 
+struct a5200_DB_entry {
+  char crc32[9];
+  byte gameMapper;
+  byte gameSize;
+};
+
 //******************************************
 //  Supported Mappers
 //******************************************
@@ -166,37 +172,14 @@ uint8_t readData_5200(uint16_t addr)  // Add Input Pullup
 {
   PORTF = addr & 0xFF;         // A0-A7
   PORTK = (addr >> 8) & 0xFF;  // A8-A13
-  NOP;
-  NOP;
-  NOP;
-  NOP;
-  NOP;
+  cycleDelay(5);
 
   // DDRC = 0x00; // Set to Input
   PORTC = 0xFF;  // Input Pullup
-  NOP;
-  NOP;
-  NOP;
-  NOP;
-  NOP;
-  // Extended Delay for Vanguard
-  NOP;
-  NOP;
-  NOP;
-  NOP;
-  NOP;
-  NOP;
-  NOP;
-  NOP;
-  NOP;
-  NOP;
+  cycleDelay(15); // Standard + extended delay for Vanguard
 
   uint8_t ret = PINC;
-  NOP;
-  NOP;
-  NOP;
-  NOP;
-  NOP;
+  cycleDelay(5);
 
   return ret;
 }
@@ -249,11 +232,14 @@ void readROM_5200() {
       // Lower Half of 32K is at 0x4000
       if (a5200size == 3) {  // 32K
         ENABLE_4000;
+        cycleDelay(15);
         readSegment_5200(0x4000, 0x8000);  // +16K = 32K
         DISABLE_4000;
+        cycleDelay(15);
       }
       // 4K/8K/16K + Upper Half of 32K
       ENABLE_8000;
+      cycleDelay(15);
       if (a5200size > 1)
         readSegment_5200(0x8000, 0xA000);  // +8K = 16K
       if (a5200size > 0)
@@ -261,32 +247,41 @@ void readROM_5200() {
       // Base 4K
       readSegment_5200(0xB000, 0xC000);  // 4K
       DISABLE_8000;
+      cycleDelay(15);
       break;
 
     case 1:  // Two Chip 16KB
       ENABLE_4000;
+      cycleDelay(15);
       readSegment_5200(0x4000, 0x6000);  // 8K
       DISABLE_4000;
+      cycleDelay(15);
       ENABLE_8000;
+      cycleDelay(15);
       readSegment_5200(0x8000, 0xA000);  // +8K = 16K
       DISABLE_8000;
+      cycleDelay(15);
       break;
 
     case 2:  // Bounty Bob Strikes Back 40KB [UNTESTED]
       ENABLE_4000;
+      cycleDelay(15);
       // First 16KB (4KB x 4)
       readBankBountyBob_5200(0x4000);
       // Second 16KB (4KB x 4)
       readBankBountyBob_5200(0x5000);
       DISABLE_4000;
+      cycleDelay(15);
       ENABLE_8000;
+      cycleDelay(15);
       readSegment_5200(0x8000, 0xA000);  // +8K = 40K
       DISABLE_8000;
+      cycleDelay(15);
       break;
   }
   myFile.close();
 
-  printCRC(fileName, NULL, 0);
+  compareCRC("5200.txt", 0, 1, 0);
 
   println_Msg(FS(FSTRING_EMPTY));
   // Prints string out of the common strings array either with or without newline
@@ -421,6 +416,35 @@ void checkStatus_5200() {
 #endif
 }
 
+//******************************************
+// READ MAPPER
+//******************************************
+
+void readDbEntry(FsFile& database, void* entry) {
+  struct a5200_DB_entry* castEntry = (a5200_DB_entry*)entry;
+
+  // Read expected CRC32 as a string
+  for (int i = 0; i < 8; ++i) {
+    castEntry->crc32[i] = database.read();
+  }
+  castEntry->crc32[8] = '\0';
+  database.seekCur(1); // Skip comma delimiter
+
+  // Read mapper
+  castEntry->gameMapper = database.read() - 48;
+
+  // if next char is not a comma, expect an additional digit
+  char temp = database.read();
+  if (temp != ',') {
+    castEntry->gameMapper = (castEntry->gameMapper * 10) + (temp - 48);
+    database.seekCur(1); // Skip over comma
+  }
+
+  // Read rom size
+  castEntry->gameSize = database.read() - 48;
+  database.seekCur(2); // Skip rest of line
+}
+
 //******************************************
 // SET MAPPER
 //******************************************
@@ -473,7 +497,7 @@ void setCart_5200() {
   //go to root
   sd.chdir();
 
-  struct database_entry_mapper_size entry;
+  struct a5200_DB_entry entry;
 
   // Select starting letter
   byte myLetter = starting_letter();
@@ -482,7 +506,7 @@ void setCart_5200() {
   if (myFile.open("5200.txt", O_READ)) {
     seek_first_letter_in_database(myFile, myLetter);
 
-    if(checkCartSelection(myFile, &readDataLineMapperSize, &entry)) {
+    if(checkCartSelection(myFile, &readDbEntry, &entry)) {
       EEPROM_writeAnything(7, entry.gameMapper);
       EEPROM_writeAnything(8, entry.gameSize);
     }
@@ -490,4 +514,12 @@ void setCart_5200() {
     print_FatalError(FS(FSTRING_DATABASE_FILE_NOT_FOUND));
   }
 }
+
+// While not precise in terms of exact cycles for NOP due to the for-loop
+// overhead, it simplifies the code while still achieving a similar result. 
+void cycleDelay(byte cycleCount) {
+  for (byte i = 0; i < cycleCount; ++i) {
+    NOP;
+  }
+}
 #endif
diff --git a/Cart_Reader/Cart_Reader.ino b/Cart_Reader/Cart_Reader.ino
index d93bfcf..396f017 100644
--- a/Cart_Reader/Cart_Reader.ino
+++ b/Cart_Reader/Cart_Reader.ino
@@ -459,7 +459,7 @@ uint32_t calculateCRC(char* fileName, char* folder, unsigned long offset) {
 /******************************************
    CRC Functions for Atari, Fairchild, Ody2, Arc, etc. modules
  *****************************************/
-#if (defined(ENABLE_ODY2) || defined(ENABLE_ARC) || defined(ENABLE_FAIRCHILD) || defined(ENABLE_MSX) || defined(ENABLE_POKE) || defined(ENABLE_2600) || defined(ENABLE_5200) || defined(ENABLE_7800) || defined(ENABLE_C64) || defined(ENABLE_VECTREX) || defined(ENABLE_NES) || defined(ENABLE_LYNX) || defined(ENABLE_ATARI8) || defined(ENABLE_BALLY) || defined(ENABLE_LEAP) || defined(ENABLE_LJ) || defined(ENABLE_LJPRO) || defined(ENABLE_PV1000) || defined(ENABLE_PYUUTA) || defined(ENABLE_RCA) || defined(ENABLE_TI99) || defined(ENABLE_TRS80) || defined(ENABLE_VIC20) || defined(ENABLE_VSMILE))
+#if (defined(ENABLE_ODY2) || defined(ENABLE_ARC) || defined(ENABLE_FAIRCHILD) || defined(ENABLE_MSX) || defined(ENABLE_POKE) || defined(ENABLE_2600) || defined(ENABLE_7800) || defined(ENABLE_C64) || defined(ENABLE_VECTREX) || defined(ENABLE_NES) || defined(ENABLE_LYNX) || defined(ENABLE_ATARI8) || defined(ENABLE_BALLY) || defined(ENABLE_LEAP) || defined(ENABLE_LJ) || defined(ENABLE_LJPRO) || defined(ENABLE_PV1000) || defined(ENABLE_PYUUTA) || defined(ENABLE_RCA) || defined(ENABLE_TI99) || defined(ENABLE_TRS80) || defined(ENABLE_VIC20) || defined(ENABLE_VSMILE))
 
 void printCRC(char* checkFile, uint32_t* crcCopy, unsigned long offset) {
   uint32_t crc = calculateCRC(checkFile, folder, offset);
@@ -751,7 +751,7 @@ void readDataLineSingleDigit(FsFile& database, void* byteData) {
 #endif
 
 #if ( \
-   defined(ENABLE_ODY2) || defined(ENABLE_5200) || defined(ENABLE_7800) || defined(ENABLE_C64) || defined(ENABLE_JAGUAR) || \
+   defined(ENABLE_ODY2) || defined(ENABLE_7800) || defined(ENABLE_C64) || defined(ENABLE_JAGUAR) || \
    defined(ENABLE_VIC20)|| defined(ENABLE_ATARI8)\
  )
 struct database_entry_mapper_size {
diff --git a/sd/5200.txt b/sd/5200.txt
index b590f77..789ad66 100644
--- a/sd/5200.txt
+++ b/sd/5200.txt
@@ -1,225 +1,258 @@
-Activision Decathlon
-0,2
+Activision Decathlon, The (USA).a52
+F43E7CD0,0,2
 
-Astro Chase
-1,2
+Astro Chase (USA).a52
+4019ECEC,1,2
 
-Atari PAM - Pete's Test
-0,1
+Atari PAM - Pete's Test (USA).a52
+28278CD6,0,1
 
-Atari PAM Diagnostics
-1,2
+Atari PAM Diagnostics (USA) (v2.0).a52
+E8B130C4,1,2
 
-Atari PAM System Test
-0,1
+Atari PAM Diagnostics (USA) (v2.3).a52
+CE07D9AD,1,2
 
-Ballblazer
-0,3
+Atari PAM System Test (USA) (v1.02).a52
+7EA86E87,0,1
 
-Beamrider
-0,2
+Ballblazer (USA).a52
+DEF2A207,0,3
 
-BerZerk
-0,2
+Beamrider (USA).a52
+9BAE58DC,0,2
 
-Blue Print
-0,2
+BerZerk (USA).a52
+BE3CD348,0,2
 
-Boogie
-0,0
+Blue Print (USA).a52
+0624E6E7,0,2
 
-Bounty Bob Strikes Back!
-2,4
+Boogie (USA) (Demo).a52
+3BD5FDD6,0,0
 
-Buck Rogers
-1,2
+Bounty Bob Strikes Back! (USA).a52
+7873C6DD,2,4
 
-Centipede
-1,2
+Buck Rogers - Planet of Zoom (USA) (Alt).a52
+20DF4927,1,2
 
-Choplifter!
-0,2
+Buck Rogers - Planet of Zoom (USA).a52
+04807705,1,2
 
-Congo Bongo
-1,2
+Carol Shaw's River Raid (USA).a52
+09FC7648,0,1
 
-Countermeasure
-1,2
+Castle Blast (USA) (Unl).a52
+7C988054,0,3
 
-Defender
-1,2
+Castle Crisis (USA) (Unl).a52
+D50E4061,0,3
 
-Dig Dug
-1,2
+Centipede (USA).a52
+536A70FE,1,2
 
-Dreadnaught Factor
-0,1
+Choplifter! (USA).a52
+9AD53BBC,0,2
 
-Frogger
-0,1
+Congo Bongo (USA).a52
+F1F42BBD,1,2
 
-Frogger II
-1,2
+Countermeasure (USA).a52
+FD541C80,1,2
 
-Galaxian
-0,1
+David Crane's Pitfall II - Lost Caverns (USA).a52
+4B910461,0,2
 
-Gorf
-0,1
+Defender (USA).a52
+BD52623B,1,2
 
-Gremlins
-0,3
+Dig Dug (USA).a52
+6A687F9C,1,2
 
-Gyruss
-1,2
+Dreadnaught Factor, The (USA).a52
+460DEF2D,0,1
 
-H.E.R.O.
-0,2
+Frogger (USA).a52
+AE7E3444,0,1
 
-James Bond 007
-1,2
+Frogger II - Threeedeep! (USA).a52
+0AF19345,1,2
 
-Joust
-1,2
+Galaxian (USA) (Alt).a52
+3A6E6133,0,1
 
-Jungle Hunt
-1,2
+Galaxian (USA).a52
+3EF4A23F,0,1
 
-Kaboom!
-0,0
+Gorf (USA).a52
+E955DB74,0,1
 
-Kangaroo
-1,2
+Gremlins (USA).a52
+063EC2C4,0,3
 
-Keystone Kapers
-0,1
+Gyruss (USA) (Alt).a52
+4241582D,1,2
 
-K-Razy Shoot-Out
-0,1
+Gyruss.a52
+CFD4A7F9,1,2
 
-Mario Bros.
-0,3
+H.E.R.O. (USA).a52
+18A73AF3,0,2
 
-MegaMania
-0,1
+James Bond 007 (USA).a52
+D9AE4518,1,2
 
-Meteorites
-0,2
+Joust (USA).a52
+BFD30C01,1,2
 
-Miner 2049er
-0,2
+Jungle Hunt (USA).a52
+2C676662,1,2
 
-Missile Command
-0,1
+Kaboom! (USA).a52
+420F5D0B,0,0
 
-Montezuma's Revenge
-1,2
+Kangaroo (USA).a52
+ECFA624F,1,2
 
-Moon Patrol
-0,2
+Keystone Kapers (USA).a52
+8FE3BB2C,0,1
 
-Mountain King
-0,1
+Koffi - Yellow Kopter (USA) (Unl).a52
+917BE656,0,3
 
-Mr. Do!'s Castle
-0,1
+K-Razy Shoot-Out (USA).a52
+EE702214,0,1
 
-Ms. Pac-Man
-1,2
+Mario Bros. (USA) (Alt).a52
+6B3F1179,0,3
 
-Pac-Man
-1,2
+Mario Bros. (USA).a52
+873742F1,0,3
 
-Pengo
-0,3
+MegaMania (USA).a52
+240A1E1A,0,1
 
-Pitfall II
-0,2
+Meteorites (USA).a52
+AB8E035B,0,2
 
-Pitfall!
-0,1
+Miner 2049er Starring Bounty Bob (USA).a52
+7DF1ADFB,0,2
 
-Pole Position
-1,2
+Missile Command (USA).a52
+44D3FF6F,0,1
 
-Popeye
-1,2
+Montezuma's Revenge - Featuring Panama Joe (USA).a52
+2A640143,1,2
 
-Q-bert
-0,1
+Moon Patrol (USA).a52
+D0B2F285,0,2
 
-QIX
-1,2
+Mountain King (USA).a52
+0F24243C,0,1
 
-Quest for Quintana Roo
-0,2
+Mr. Do!'s Castle (USA).a52
+AA55F9BE,0,1
 
-RealSports Baseball
-0,3
+Ms. Pac-Man (USA).a52
+752F5EFD,1,2
 
-RealSports Basketball
-0,3
+Pac-Man (USA).a52
+8873EF51,1,2
 
-RealSports Football
-1,2
+Pengo (USA).a52
+E4F8BA8C,0,3
 
-RealSports Soccer
-1,2
+Pitfall! (USA).a52
+B2887833,0,1
 
-RealSports Tennis
-1,2
+Pole Position (USA).a52
+ABC2D1E4,1,2
 
-Rescue on Fractalus!
-0,3
+Popeye (USA).a52
+A18A9A40,1,2
 
-River Raid
-0,1
+Q-bert (USA).a52
+3FE4A401,0,1
 
-Robotron 2084
-0,2
+QIX (USA).a52
+AEA6D2C2,1,2
 
-Space Dungeon
-1,2
+Quest for Quintana Roo (USA).a52
+B5F3402B,0,2
 
-Space Invaders
-0,1
+RealSports Baseball (USA).a52
+44166592,0,3
 
-Space Shuttle
-0,2
+RealSports Basketball (USA).a52
+DD217276,0,3
 
-Star Raiders
-1,2
+RealSports Football (USA).a52
+4336C2CC,1,2
 
-Star Trek
-1,2
+RealSports Soccer (USA).a52
+ECBD1853,1,2
 
-Star Wars - Return of the Jedi
-0,1
+RealSports Tennis (USA).a52
+10F33C90,1,2
 
-Star Wars - The Arcade Game
-1,2
+Rescue on Fractalus! (USA).a52
+762C591B,0,3
 
-Super Breakout
-0,0
+Robotron 2084 (USA).a52
+4252ABD9,0,2
 
-Super Cobra
-0,1
+Space Dungeon (USA).a52
+B68D61E8,1,2
 
-Vanguard
-0,3
+Space Invaders (USA).a52
+DE5C354A,0,1
 
-Wizard of Wor
-0,2
+Space Shuttle - A Journey Into Space (USA).a52
+387365DC,0,2
 
-Yellow Submarine
-0,0
+Star Raiders (USA) (Alt).a52
+4BAC5DD9,1,2
 
-Zaxxon
-0,3
+Star Raiders (USA).a52
+7D819A9F,1,2
 
-Zenji
-0,1
+Star Trek - Strategic Operations Simulator (USA) (Alt).a52
+33B70206,0,2
 
-Zone Ranger
-0,2
+Star Trek - Strategic Operations Simulator (USA).a52
+69F23548,0,2
+
+Star Wars - Return of the Jedi - Death Star Battle (USA).a52
+0675F0A5,0,1
+
+Star Wars - The Arcade Game (USA).a52
+75F566DF,1,2
+
+Super Breakout (USA).a52
+A0642110,0,0
+
+Super Cobra (USA).a52
+97DEBCD2,0,1
+
+Tempest (USA) (AtariAge).a52
+A6400E17,0,3
+
+Vanguard (USA).a52
+CAAEA0A4,0,3
+
+Wizard of Wor (USA).a52
+D6F7DDFD,0,2
+
+Yellow Submarine (USA) (Demo).a52
+F47BC091,0,0
+
+Zaxxon (USA).a52
+741746D1,0,3
+
+Zenji (USA).a52
+DA228530,0,1
+
+Zone Ranger (USA).a52
+2959D827,0,2