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For questions about the different versions and products of the NES (Nintendo Entertainment System)

15 votes
Accepted

How does the NES PlayChoice arcade's security EPROM work?

The security is handled entirely by the Z80, the NES side of the machine has no awareness of anything outside of the normal behavior of an NES. … In fact, all the games (except for Mike Tyson's Punch Out) are 100% identical to the NES cartridge versions, and frequently use the same maskROMs from the NES version. …
Memblers's user avatar
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2 votes

Change color of the text written in PPU memory (NES-Super Mario Bros)

Look at it in the Mesen emulator, under Debugger / PPU Viewer / Palette Viewer (there you can change the palette to see the effect). For the text color, you want palette address $3F09. This is also t …
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