Reset $2003 at scanline 238

Discuss emulation of the Nintendo Entertainment System and Famicom.

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Post by Drag » Tue Jul 19, 2011 10:01 pm

tepples wrote:So it might not be 70 lines of vblank and 1 line of pre-render as much as 20 lines of vblank and 51 lines of pre-render. Does this newly discovered OAM copy failure also happen if you have forced blank on?
I don't think it would be quite pre-render. Aren't games able to access the PPU memory during all parts of vblank? If it were 51 lines of pre-render, this would be impossible due to the PPU's fetches for the BG.

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