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Oooooooookay, so I'm not about to do this down, because I think it's awesome, but I do think it's time for a little more up-front transparency here. When I cli
by bartread 3y ago
Oooooooookay, so I'm not about to do this down, because I think it's awesome, but I do think it's time for a little more up-front transparency here.
When I clicked through and hit play on the first video I braced myself for the worst framerate in human history and/or a tiny viewport, and so my jaw briefly dropped when I was greeted with neither of those. The game is basically fullscreen and runs great: a perfectly respectable (for the time - I know a lot of you will moan about games that don't run at a constant 60fps but, man, maybe you don't know what it was like back then) 25 - 30fps, and a frankly amazing framerate for the Amiga. Plenty of 2D games couldn't have reliably held that and just forget it for any kind of 3D.
Then my rational mind kicked in with, "There's no effin way that's running on an A500 with a stock 68k CPU running at 7.16/7.09MHz."
And, sadly, I'm right: there is no effin way. The footage was recorded from an A1200 with a stock 68020 running at 14MHz. The graphics are OCS compatible, and I've no doubt the engine is caning the OCS blitter to within an inch of its life, so it looks exactly the same as it would on an A500, but you ain't getting that kind of framerate without more horsies than the A500's 68k can supply.
With that being said, the game runs at 10 - 12 fps on a stock A500 with 1MB RAM (512K chip + 512K fast, so you need the 1.3 ROMs and the Fatter Agnus), which is still incredibly impressive. For a lot of solid polygon 3D games back in the day - think F/A-18 Interceptor, F-19 Stealth Fighter, and even games like Starglider 2 - drops to single digit framerates if not exactly the norm, were certainly commonplace (I remember F-19 being particularly bad for this). I seem to remember the Amiga version of Elite held a pretty decent framerate but, to be fair, the polygon count was very low, and it had a pretty small viewport. By comparison with these games, the Grind visuals, at 10 - 12 fps, on a bog standard A500 with an absolutely era appropriate amount of memory are nothing short of extraordinary.
If, in 1990 - 1993, or even after I'd first played DOOM on a mate's dad's 486SX in summer 1994, you'd shown me Grind running on my Amiga 500 at 10 - 12 FPS I would probably have fainted or jizzed myself or something equally ridiculous. It would have literally blown my mind.
Incredible work.
EDIT: Is it me or is the shotgun sound effect a slightly edited version of the DOOM shotgun sound effect? Not complaining, because it's an awesome sound, but just wondering if others are hearing the same thing I am.
- deleted 3y ago[deleted]
- snvzz 3y ago>a stock A500 with 1MB RAM (512K chip + 512K fast) Not Fast RAM, but Slow RAM. Fast RAM is exclusive to the CPU. On A500, it needs to be on the CPU socket, or on the left expansion port. Trapdoor RAM, as in the common 512K expansion, can only be Slow or Chip. Slow because the chipset can block access to it, but can't access it itself. Chip on newer A500 boards with ECS Agnus, after a small motherboard jumper mod.
- prvc 3y ago>There's no effin way that's running on an A500 with a stock 68k CPU running at 7.16/7.09MHz. Could you be specific about the envelope math used to arrive at this conclusion? What are the essential bottlenecks?