OPROM

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OPROM

(Option ROM) Firmware on adapter cards that control bootable peripherals. The system BIOS interrogates the option ROMs to determine which devices can be booted. See BBS.
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The CSM is the portion of the complete software product that provides backwards compatibility enabling any current operating system (such as Windows(R) XP) or option ROM (such as a video BIOS) to function on a PC running the Framework.
Ready64's integrated IA-32 BIOS provides full IA-32 compatibility, which is crucial to support existing PCI Option ROMs found on RAID, SCSI, and Ethernet controllers.