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    Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

    (Dreamcast / Reicast) What do the numbers after certain ROMs (such as 11S, 12S, 1S, 4S) mean?

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    • G
      goigle
      last edited by

      Hi,
      I'm trying to figure out what the number / letter combinations mean.
      I've seen them in certain ROM zip files. The zip will have two folders, such as 11S and 12S or 1S and 4S. Typically, one version works and the other doesn't.
      What do these numbers mean?

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      • madmodder123M
        madmodder123
        last edited by

        I would also like to know...
        Soul Calibur has a 1S version and a 4S version, and I cannot find any differences between them.

        1 Reply Last reply Reply Quote 0
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