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Hy, one question. You wrote, the game has a 25FPS mode now. Does this mean, that, with this mode, it will run in fullspeed on A500 machines too? And if yes, how can this 25FPS mode be activated?

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the game detecs the lack of fastmem and lack of 68020+ CPU and switches to 25 fps automatically when running from floppy. As far as I know the speed is good.

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Ah, it's autodetected. This is cool. I compared the speed in two emulator-windows at the same time, by emulating a Amiga500 in one window and a Amiga1200 in the other and the game is indeed playable on the A500, in this 25FPS mode. Sadly it does not run in real fullspeed, it seems, because it plays a bit faster on the A1200 (and of course more smoothly, because no frames need to be skipped, on the AGA machine). But nevertheless, like i already wrote, it's at least playable on the A500 now, so i think this 25FPS mode (every second frame skipped), was a good idea anyway.

One last question about this, because this frameskipping thing is interesting. I can remember, that you once wrote me on the webpage of your "Galaga 500" game, that this game also runs at a 25FPS-mode on A500 machines, but that it's still too slow on non-AGA-Amigas, because some of the code still has to run at 50fps (or something like that). But would it be possible, to give "Galaga500" an auto-frameskip mode for A500 machines, or would the frame jumps in the gameplay then be too large, making it run too choppy or jerky? Maybe it would be worth a try? Or perhaps, if that's not possible, an alternative mode, in which only every third frame is displayed and maybe the game could only then switch to this, when the A500 could not hold the fullspeed in the 25FPS mode anymore (e.g. too many opponents on the screen at the same time, etc) and otherwise run the game in 25FPS mode (as it is now)? Perhaps it could then maintain the full speed of the Arcade version on A500 machines then? What do you think?

Galaga already benefits from all possible optimizations including this 25 fps mode but it's still not enough. I'm planning to revisit the game to try to optimize it further and add dynamic frameskip like I'm doing in Dragonninja

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Sounds very good, it's definitely worth a try. We'll just have to see, if it's too jerky then, or if it's still good playable with auto-frameskipping. Galaga is one of my favorite games, that's why I'm looking forward to this update. Same for Pooyan, i played it alot in different Arcades, back in the time. I guess, in Pooyan not much more can be done, to have it running in real fullspeed on A500 machines?

By the way. The Amiga is really lacking ports of some of the old Arcade-classics, for which there are good ports on other retrosystems (like for example C64, NES, A7800, etc). I was already wondering why, back then in the 90's, when i had my first Amiga500. So it's good, that you're bringing some of the classics over there now. Nice work.