I have a video on youtube comparing the default speed to 25 mhz but once I'm done testing 27 mhz I'll probably upload a new video of it in action. When you overclock starfox the framerate becomes much smoother. The bosses and cutscenes are also a little faster. But everything else is pretty much the same
And for anyone who's curious once I went over 27 mhz the game would freeze because the superfx was running too fast for the programming. The improvement in framerate is really amazing but unfortunately the only safe way to overclock this game is to solder the rom into a more powerful version of the super fx chip. Another modder overclocked the default starfox mario chip to 25 mhz but that chip would overheat after 30 minutes of play at 25 mhz and he had to install heatsinks. My super fx 2 starfox 1 cart can take clock rates that are so fast the game actually freezes because it's running too fast for the programming.
Tomorrow I'll test route 3 of the game at 27 mhz (route 1 and 2 were both fine). Once the entire game is confirmed as working I'll upload a comparison video and post it.
Also huge credits go out to doug for helping me out with this. He burned me the starfox 1 eproms and wired the eproms into different types of superfx cartridges. Doug builds starfox 2 cartridges so it was just more convenient for me to pay him to build these carts for me. The overclocking part I did that all myself. I actually had to completely disconnect the super fx chips from the built in clock circuit on the cart and wire a crystal oscillator directly into the clock pin of the super fx chip. Replacing the resonator on the cartridge with a 2 pin crystal overclocks some superfx games but not starfox 1. After looking at the original starfox 1 pcb I noticed that the mario chip on that cartridge was being fed a raw 21.5 mhz signal straight into the mario chip. So I wired up my converted super fx carts the same way and that's how I got the overclock to finally work.
