Each line consists of four characters of the form "xx=y", where "xx" is the hex value, and "y" is the character that that value represents. The Hex Editor also has support for table files (*.tbl) to map bytes to text. If you make a mistake, press Ctrl+Z or Edit->Undo to undo your change (then load a save-state if the game crashed). This allows you to edit the ROM file in real time, i.e. This allows you to directly view and write to OAM memory (sprite RAM). This allows you to directly view and write to PPU memory (VRAM). When adding a breakpoint to the range of ROM addresses ($8000-$FFFF), the Hex Editor also takes into account the number of the bank in which the byte is located. Finally, the right-click menu can be used to quickly add a read or write breakpoint to the debugger. This works by adding it directly to the Cheat List, which you can see from the Cheat Console. You can also freeze RAM by clicking on it with the middle mouse button, or by using the right-click menu. If you want to edit the ROM itself, right-click on the offset and select "Go here in ROM file" that will take you directly to where you need to be so you can start editing. This is because most mappers have registers which are located in this space so writing there can trigger mapper operations that may cause the game to crash or glitch if you don't know what you're doing. While you can easily modify RAM, or write directly to registers by typing in data, you cannot modify ROM data ($8000-$FFFF) itself. This allows you to directly edit all of the NES address space (System Bus - $0000-$FFFF). The Hex Editor lets you edit three major areas: Furthermore, table files are supported, so you can edit a game's text in real-time and see the result immediately.īasically, it lets you tinker with any part of a game's RAM or ROM while it is running. You can also "freeze" parts of RAM (to prevent the game from modifying the data there), search for data (Ctrl+F), and even copy and paste data to/from the clipboard. It makes it easy to edit the game's RAM, PPU memory, and even its currently-loaded ROM data by simply typing in values in the editor. It allows you to view the entire RAM & ROM contents in a resizable dialog window. The Hex Editor is a very powerful memory viewing/editing tool, it obsoletes the Memory Viewer tool from the FCE Ultra and FCEU Rerecording branches.
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