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--- plugin 2009/05/12 19:09
+++ plugin 2009/05/12 19:22 current
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 ====== RomCenter plugin ======
+Plugins are used by romcenter to calulate the file crc and size. Its main work is to recognize the rom format, skip header datas and process roms datas so
+that two roms of a same game in different format return only one size and crc.
+Here is an example of three roms with different crc and different size:
+{{:nes_plugin1.png|}}
+With the standart plugin, the crc is calculated on the whole files, including the header.
+Now, if we switch to a dedicated plugin (here, nes.dll), the nes format is understood (ffe, nes, unf) and the file appears to be the same game.
+{{:nes_plugin2.png|}}
+Using plugins, you only need to store one crc and one size in the datafile to recognize all formats.
+====== Available plugins ======
 [[Nes plugin]]
 [[Arcade plugin]]