Based on your query , you are likely referring to a ROM or BIOS file used in the MAME (Multiple Arcade Machine Emulator) . The specific request to "make feature" suggests you want to enable, create, or understand a feature related to this file.
<software name="sp5001"> <description>Sega System 16 BIOS (sp5001-a.bin)</description> <part name="bios" interface="rom"> <dataarea name="main" size="0x8000"> <rom name="sp5001-a.bin" size="0x8000" crc="0xYourCRC" sha1="0xYourSHA1"/> </dataarea> </part> </software> To directly use the feature of loading this specific BIOS with a game: Sp5001-a.bin Mame