My nes emulator works fairly well, but I don't know how to find the obscure bugs in the 6502 core.
My emulator passes all test in both nestress and nestest, but there is still a cpu bug.
The bug is in the legend of zelda. When I press start to view the item screen, the screen scrolls down from the top, but immediatly after the "game over" screen is displayed asking whether I want to continue, save, or retry.
I could write debug logs but I don't know how to sync my log up with the one genereated by the FCE tracer.
My emulator passes all test in both nestress and nestest, but there is still a cpu bug.
The bug is in the legend of zelda. When I press start to view the item screen, the screen scrolls down from the top, but immediatly after the "game over" screen is displayed asking whether I want to continue, save, or retry.
I could write debug logs but I don't know how to sync my log up with the one genereated by the FCE tracer.