search

MiSTer-devel / Saturn_MiSTer

Sega Saturn for MiSTer
60 stars 17 forks source link

Keiou Yuugekitai - Okiraku Tamatebako // Variable Memory Bug? #285

Open InfernoHabanero opened 3 weeks ago

InfernoHabanero commented 3 weeks ago

The game seems to have an issue with a variable memory bug of sorts, where I get different results depending on if I start fresh from a cold reboot or restart in the core itself. The opening movie for Keio Flying Squadron is a good example of what I'm talking about.

Here's what happens when I try to play the opening movie after a cold reboot.

https://streamable.com/13ibrb

Here's what happens after I restart the core itself.

https://streamable.com/ez8rhb

As you can see, there are two different results. One eventually always crashes in the same spot, while the other heavily slows down at one part but then continues afterwards like normal.

I should also note I did get a far more nasty bug one time where the Keio Flying Squadron 2 opening movie also broke and the bug carried over after a restart. This caused issues like the music to repeatedly cut out and Keio having phantom inputs during the level one demo, but I couldn't replicate it again. So I'm assuming that was just a fluke.

Tested this out on the 11-06-2024 dual RAM build using two 128MB 2.9 RAM modules.

srg320 commented 1 week ago

I can't reproduce the crashing. I need more information to replicate the conditions for crashing. The slowdown around the well is also present on the original hardware.