bloodline wrote:
Lando wrote:
Copper timing is off, causing trashed displays on some demos and games which work on the real hardware.
Really? I've really pushed it hard and not found any problems with the copper (Make sure you switch "Fast Copper Mode" off).
I just tried a couple of things at random.
First I was thinking of some code I wrote years ago for a
Music Disk, which never ran properly on any version of WinUAE. I just tried it again on WinUAE 1.1, and the bottom part of the screen is no longer trashed (as it was in previous versions of UAE), but the scroller still flickers like hell and the bottom third of the display has random bits of what looks like sprite data appearing and reappearing randomly. Also the intro (coded by someone else) has problems when the image scrolls up - it's less than smooth, and after the second and third scroll up, it doesn't scroll far enough (the modulo is changed to -40 at a specific point in the display for the floodfill effect) so the bottom part of the cartoon looks broken.
Also in the Showtime 17 Diskmag, the picture at the start of the mag doesn't scroll up smoothly, it almost jerks into view, and the scroller in the mag intro is flickery and again has random bits of junk appearing every now and then (again, most likely spurious sprite data)
Sure, it could be that they're just badly coded, but the fact that it works 100% on any real Amiga, and not on WinUAE, just demonstrates than WinUAE is still incapable of accurately emulating a real Amiga computer.
Sprite movement and scrolling aren't as smooth as the real hardware. I think about 90%.
Try UAE on an Athlon64 or a 3Ghz Pentium4... It's impossible to tell if you are running an emulator or a Real Amiga. Sprites are full speed.
I don't have such hardware here unfortunately, just an aging 1.8Ghz P4 desktop and a Toshiba Pentium M Laptop. On these, at least, scrolling is not as smooth as an A500, as the movement of sprites (mouse cursor most noticably) is not silky smooth like on a real Amiga.
