Graphics problems with Out Run (U.S Gold).

dirkwhoffmann / vAmiga

vAmiga is a user-friendly Amiga 500, 1000, 2000 emulator for macOS

https://dirkwhoffmann.github.io/vAmiga

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Graphics problems with Out Run (U.S Gold). #331

Closed Gianmarco72 closed 4 years ago

Gianmarco72 commented 4 years ago

Here's how it should be (UAE)🤩: UAE This is what happens on vAmiga 😣: vAmiga1 vAmiga2 Similarly as described on Issue #326, the game and audio are still running.

dirkwhoffmann commented 4 years ago

Quick findings: Outrun (1988)(U.S. Gold)[cr BS1][t +2 BS1].adf

At this point, the game executes a Copper list that is completely broken:

dirkwhoffmann commented 4 years ago

Update: "Outrun (1988)(U.S. Gold)[cr QTX].adf" is the better test case, because it doesn't have the annoying cracker intro scene.

SAE 0.9.11 (Turbo drive, Immediate Blitter): 👍

vAmiga: 🙈

Bookmakers are open for business. I bet it's a Copper issue...

dirkwhoffmann commented 4 years ago

Got it. The addresses written to the Copper LC registers are outside the Chip RAM bounds and vAmiga had a bug w.r.t. Copper/Blitter Chip RAM mirroring.