I started to dump my own cartridges. Some are OK, but others have different CRC32 (yeah, I've cleaned up the connectors with alcohol and cotton swabs, and did the dumping twice or 3x... or even more).
For example, I was expecting my Mega Man IV dump to have a CRC32 of $18A2E74F, but I got $2bc67aa8. Gameplay and graphics are perfectly fine, no glitches. Another example is Gradius II, a pirate cart where you can select weapons with B+Select. Tried a lot of times, the same result. The game works, but the graphics are all corrupted. I can't open the cartridge case - I glued it 20 years ago, no way to deglue it... unless I break the case. No, I won't. ^_^;;
For Gradius II, these are the CRCs:
- There's a Super Mario Bros. 3 cart sold in Brazil by Playtronic. Yup, original, but with a different PRG ROM CRC32.
- I have two other carts unable to get a correct dump. A 2in1 yellow cart within Side Pocket (?) + Rockman 1. The loaded game varies with RESET. The other cart is the 600in1 (only 33 unique games on it).
For example, I was expecting my Mega Man IV dump to have a CRC32 of $18A2E74F, but I got $2bc67aa8. Gameplay and graphics are perfectly fine, no glitches. Another example is Gradius II, a pirate cart where you can select weapons with B+Select. Tried a lot of times, the same result. The game works, but the graphics are all corrupted. I can't open the cartridge case - I glued it 20 years ago, no way to deglue it... unless I break the case. No, I won't. ^_^;;
For Gradius II, these are the CRCs:
Code:
Gradius II.nes, mapper 25
Program ROM: size 0x020000, crc32 0xfdc83487
Charcter ROM: size 0x020000, crc32 0x116d5e18
Program ROM: size 0x020000, crc32 0xfdc83487
Charcter ROM: size 0x020000, crc32 0x116d5e18
- There's a Super Mario Bros. 3 cart sold in Brazil by Playtronic. Yup, original, but with a different PRG ROM CRC32.
- I have two other carts unable to get a correct dump. A 2in1 yellow cart within Side Pocket (?) + Rockman 1. The loaded game varies with RESET. The other cart is the 600in1 (only 33 unique games on it).