Topic summary
Graphics Output Protocol
Extracted from the Wikipedia article UEFI.
Graphics features
The EFI 1.0 specification defined a UGA (Universal Graphic Adapter) protocol as a way to support graphics features. UEFI did not include UGA and replaced it with GOP (Graphics Output Protocol). These protocols are generally implemented by the Video BIOS. They take the place of the legacy INT 10h and VESA BIOS Extensions, the basic cross-vendor mechanisms of graphics output on IBM PC.