Merry Christmas and Happy New Years to everyone on Arcade Projects. I present to you, the definitive TMNT2 conversion guide. Please let me know if there are any questions or if anyone needs clarification. Please do not make these to sell, and most importantly HAVE FUN!!!
TMNT2 Conversion Guide 1.0 - by Cpsystem3
Game to use for a donor:
Quiz Gakumon no Susume
Difficulty level to perform conversion:
7 out of 10, experience with desoldering DIP via's is required
Materials required:
Eprom programmer with ability to do 42pin roms and GAL16v8 and GAL22v10
4x 40 pin DIP sockets
2x 42 pin DIP sockets
1x 20 pin DIP socket
1x 22 pin DIP socket
4x 27c4000G eproms
1x 27c800 eprom
1x 27c160 eprom
4x 27c010 eproms
1x 27c512 eprom
1x GAL16v8 PLD
1x GAL22v10 PLD
Mame TMNT2 Parent Rom Set
Mame TMNT2 region-specific rom set (optional if you want a specific region)
Temperature Controlled Solder Station
High Quality Desolder Braid -or- Desolder Iron
Step 1:
Remove all mask roms by cutting the IC legs as close to the body as you can with diagonal micro cutters. Remove the mask rom's body, remove each of the pins by heating them with your solder iron and extracting the pin with tweezers. Clear the throughole using good quality desolder braid, or a desoldering station. Inspect for any trace damage before proceeding. Assuming everything checks out OK, install quality sockets in each of the IC locations where the masks were removed (my board required 6 total).
Step 2:
Remove the existing PAL IC's at 4E and 5E. Install the 20 and 22 pin sockets, follow the instructions above for specifics on removal.
Step 3:
Burn the eproms and install in the following locations, substitute the ***'s for the revision you want (ex: UAA is USA revision A, Mame Parent):
27c512 - 063B01 2F
27c010 - 063***02 8E
27c010 - 063***03 8G
27c010 - 063***04 10E
27c010 - 063***05 10G
27c160 - 063B06 1D
27c800 - 063B07 3L
27c4000 - 063B08 3K
27c800 - 063B09 7L
27c4000 - 063B10 7K
27c4000 - 063B11 12K
27c4000 - 063B12 16K
Step 4:
Burn the "Konami-54253.jed" to a Gal16v8 PLD, install in location 4E. Burn "Konami-053997.jed" to a Gal22v10 PLD, install it in location 5E.
Step 5:
Hold the test switch on the PCB or your cabinet, power the cabinet on. This will trigger eeprom initialization and load TMNT2's default settings. Failing to do this step will result in the game not passing the rom test and resetting indefinitely.
Tips and other thoughts:
*When you get your game booting, enter the test menu and run a rom test. If any of the mask roms are failing, go back and double check your soldering work on the sockets. If you are not careful, it is easy to damage the via's during desoldering.
*The 40pin 4mb Eproms are "Non-Jedec Roms", also known as "Mask Rom Pinout". They are not the same as 27c4096, 27c4001, etc. Be sure to get HN27c4000G or an equivallent.
*If you are having trouble finding 27c800 eproms for a good price, simply use 27c160 and "double the binary". You can do this either by using Porchy's wonderful BinManager tool, or by using a command prompt in windows with "copy /b file1.bin + file2.bin combined.bin"
*If you are having trouble finding or programming GAL22V10 PLD chips, you can reuse the PLD that came with Quiz Gakumon. The program rom memory map is different, but no worries there! Simply "interleave" program roms 8E and 10E (install in 8E) and 8G and 10G (install in 8G). Burn the resulting binaries to 27c020 eproms. Use BinManager to interleave the files.
*Japanese distributors generally have Quiz Gakumon in stock. eBay, Yahoo, Forums generally do not. Try emailing Game Kanaya, Tops Japan, G-Front or any of the Japanese based distributors. Don't be shy, most will reply to overseas inquiries! Expect to pay about 15,000¥.
TMNT2 Conversion Guide 1.0 - by Cpsystem3
Game to use for a donor:
Quiz Gakumon no Susume
Difficulty level to perform conversion:
7 out of 10, experience with desoldering DIP via's is required
Materials required:
Eprom programmer with ability to do 42pin roms and GAL16v8 and GAL22v10
4x 40 pin DIP sockets
2x 42 pin DIP sockets
1x 20 pin DIP socket
1x 22 pin DIP socket
4x 27c4000G eproms
1x 27c800 eprom
1x 27c160 eprom
4x 27c010 eproms
1x 27c512 eprom
1x GAL16v8 PLD
1x GAL22v10 PLD
Mame TMNT2 Parent Rom Set
Mame TMNT2 region-specific rom set (optional if you want a specific region)
Temperature Controlled Solder Station
High Quality Desolder Braid -or- Desolder Iron
Step 1:
Remove all mask roms by cutting the IC legs as close to the body as you can with diagonal micro cutters. Remove the mask rom's body, remove each of the pins by heating them with your solder iron and extracting the pin with tweezers. Clear the throughole using good quality desolder braid, or a desoldering station. Inspect for any trace damage before proceeding. Assuming everything checks out OK, install quality sockets in each of the IC locations where the masks were removed (my board required 6 total).
Step 2:
Remove the existing PAL IC's at 4E and 5E. Install the 20 and 22 pin sockets, follow the instructions above for specifics on removal.
Step 3:
Burn the eproms and install in the following locations, substitute the ***'s for the revision you want (ex: UAA is USA revision A, Mame Parent):
27c512 - 063B01 2F
27c010 - 063***02 8E
27c010 - 063***03 8G
27c010 - 063***04 10E
27c010 - 063***05 10G
27c160 - 063B06 1D
27c800 - 063B07 3L
27c4000 - 063B08 3K
27c800 - 063B09 7L
27c4000 - 063B10 7K
27c4000 - 063B11 12K
27c4000 - 063B12 16K
Step 4:
Burn the "Konami-54253.jed" to a Gal16v8 PLD, install in location 4E. Burn "Konami-053997.jed" to a Gal22v10 PLD, install it in location 5E.
Step 5:
Hold the test switch on the PCB or your cabinet, power the cabinet on. This will trigger eeprom initialization and load TMNT2's default settings. Failing to do this step will result in the game not passing the rom test and resetting indefinitely.
Tips and other thoughts:
*When you get your game booting, enter the test menu and run a rom test. If any of the mask roms are failing, go back and double check your soldering work on the sockets. If you are not careful, it is easy to damage the via's during desoldering.
*The 40pin 4mb Eproms are "Non-Jedec Roms", also known as "Mask Rom Pinout". They are not the same as 27c4096, 27c4001, etc. Be sure to get HN27c4000G or an equivallent.
*If you are having trouble finding 27c800 eproms for a good price, simply use 27c160 and "double the binary". You can do this either by using Porchy's wonderful BinManager tool, or by using a command prompt in windows with "copy /b file1.bin + file2.bin combined.bin"
*If you are having trouble finding or programming GAL22V10 PLD chips, you can reuse the PLD that came with Quiz Gakumon. The program rom memory map is different, but no worries there! Simply "interleave" program roms 8E and 10E (install in 8E) and 8G and 10G (install in 8G). Burn the resulting binaries to 27c020 eproms. Use BinManager to interleave the files.
*Japanese distributors generally have Quiz Gakumon in stock. eBay, Yahoo, Forums generally do not. Try emailing Game Kanaya, Tops Japan, G-Front or any of the Japanese based distributors. Don't be shy, most will reply to overseas inquiries! Expect to pay about 15,000¥.
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