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| − | | + | #redirect [[sega:SMD]] |
| − | '''.SMD''' is an interleaved file format created by [[Sega]] [[Genesis]] cartridge dumps made with a [[Super Magic Drive]]. SMD BIOS can only see 16K of [[cartridge]] [[ROM]] at once and it's unknown why the data becomes interleaved. [[68000]] ROM will appear in an interleaved format, with the first 8K being the even bytes and the remaining 8K being the odd bytes of a 16K block. This does not occur with [[Z80]] ROM, though I'm not sure why. When reading cartridge data from the banked ROM area, or loading data into copier [[DRAM]], the data will be in this format.
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| − | In order to edit a Genesis ROM, .SMD files need to be converted to [[.BIN|binary]] files. This can be accomplished with a number of programs.
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| − | ==External Links==
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| − | * [http://cgfm2.emuviews.com/txt/smdtech.txt Super Magic Drive hardware information] — paper by Charles MacDonald
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