rezmang

Ive tested the Game Genie code patches, they work flawlessly! My first place standing has been restored and I am able to qualify for the playoffs! I have submitted the codes here: https://github.com/libretro/libretro-database/pull/1353 If you are using RetroArch, do this: In the cheats section, load the NHL 95 .cht file Enable cheat "Master Code" and "Season 1st place bug" Apply changes Toggle: Auto-Apply Cheats During Game Load Goto the core Overrides section and Save Core Overrides I also tested the patched rom, works as well! Thank you!! NHL_95.cht

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Ahh, just noticed there is another thread for this. Will post my results there.

I finally got back around to hitting the 128 point season bug on the original ROM. I have attached screen shots and game saves for 126 points and 128 points. I now have everything setup on my laptop, so I guess the next step is to try and get the patch codes in and verify everything is working. Not sure if I will get to this today, but I will definitely get back to this next weekend. Thank you!! NHL '95.srm.points_128NHL '95.srm.points_126

Check out: https://github.com/libretro/libretro-database There is already a cheat config for NHL 95: https://github.com/libretro/libretro-database/blob/master/cht/Sega - Mega Drive - Genesis/NHL 95 (USA%2C Europe).cht Looking around, it seems you can combine multiple cheats codes using a plus sign (+). I’m going on vacation for the next few weeks, but when I’m back I should have my season ready to test this. I will also upload my state file so you can play around with this too. Thank you!!

Nah, I’m not that cool :] Using RetroArch via https://github.com/eduardofilo/RG350_adam_image/blob/master/README.md But I can provide you before and after screenshots if that helps. I did want to investigate if it’s possible to simplify the patch to a single code, but not sure if that’s realistic. Signed integer overflow is a pretty common bug, especially in the 8/16 bit world. My hope was there might be an earlier summing function we could tweak or this was the result of a bad masked 16bit conversion. I still need to sit down and stare at the assembly for a while, but it does seem like you have a pretty good handle on this. So thank you for your hard work and diligence on this. Making a video on this is a great idea!!!

Excellent. Is the source or assembly available somewhere for the original NHL 95 rom? I do have experience with this kind of code and wanted to take a peak at what the actual bug is. I’m about 10 games shy of hitting this bug on the original, so I hope to start testing cheat code patches soon. Thank you!!!!

Any chance to get a RetroArch (Game Genie) code for this mod? The above mentioned patch is in a forked version of NHL 95, which is a bit different. Would love to be able to patch a cheat on the original rom. Thank you everyone for this thread!!!!!