Gemini Lake UHD driver

Hey, and what if my system supports CSM boot? Would that make matters better

 

@pedro2343
For a graphic driver, it doesn't matter if BIOS is UEFI or Legacy. The OS will work with the same performance for both Legacy and UEFI.
The graphics cards usually has 2 video ROMs:

• Legacy Vbios for boot PC in Legacy (CSM)
  
• GOP for boot PC in UEFI

AMD graphics card video dumped OpROM example - Image 1 is Legacy ROM, Image 2 is UEFI (GOP) ROM:

Spoiler

Code:

Generate Info for file backup.bin: (OpRom Image)
==========================================
Image 1 -- Offset 0x0
=======================
  ROM header contents:
    Signature              0xAA55
    PCIR offset            0x01F0
  PCI Data Structure
    Signature              PCIR
    Vendor ID              0x1002
    Device ID              0x677B
    PCI Revision           0x00
    Image size             0x10000
    Code revision          0x0D0C
    Indicator              0x00   (Not last image)
    Code type              0x00   (PCAT Image)
  Legacy BIOS File Name    ac944008a.bi
  Legacy BIOS Part Number  113-AC94400-108-BT
  Legacy BIOS Build Number 239992
  Legacy BIOS Change List  816860
  ByteCheckSum             0
Image 2 -- Offset 0x10000
=======================
  ROM header contents:
    Signature              0xAA55
    PCIR offset            0x001C
  PCI Data Structure
    Signature              PCIR
    Vendor ID              0x1002
    Device ID              0x677B
    PCI Revision           0x00
    Image size             0xF200
    Code revision          0x0000
    Indicator              0x80   (last image)
    Code type              0x03   (EFI Image)
    EFI Signature          0x0EF1
    Compression Type       0x0001 (compressed)
    Machine type           0x8664 (X64)
    Subsystem              0x000B (EFI boot service driver)
    EFI image offset       0x005C (abs: 0x1005C)

  Dump Gop Driver Info:
    Machine type code      X64
    Size Of Gop Image      99936 (97 KB)
    GOP Driver Name: AMD GOP X64 Driver Rev.1.41.0.0.0.LibBuildNo:2055.Sep 10 2012.14:57:32
    GOP AMD_Build          239992
    GOP AMD_CL             816736

The Windows operating system has two managers and two loaders:

• bootmgr manager + winload.exe loader for boot in Legacy (CSM)
  
• bootmgfw.efi manager + winload.efi loader for boot in UEFI

In both modes - Legacy and UEFI, the same basic graphics driver vga.sys is used.

P.S. With the help of a UEFI manager (FlashBoot.efi - patched Win7 bootmgfw.efi) or UefiSeven.efi (manager which use original Win7 bootmgfw.efi) + Windows loader from Windows Vista Beta (winload.efi) you can boot WinXP and you do not need a special graphics driver because WinXP works on own vga.sys

Summary - there are no separate graphic drivers for UEFI and others for Legacy.

 

Thank you for the explanation I undestand

 

Yes, I hope I can find something... I have UHD 600 as well. Windows 7 on this low end computer would run so well...