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   alt.os.development      Operating system development chatter      4,255 messages   

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   Message 2,573 of 4,255   
   mutazilah@gmail.com to Joe Monk   
   Re: drivers   
   13 Jul 21 18:02:13   
   
   From: muta...@gmail.com   
      
   On Wednesday, July 14, 2021 at 10:10:24 AM UTC+10, Joe Monk wrote:   
      
   > > As far as I can tell, a BOOTX64.EFI containing maybe   
   > > 3000 lines of code, mainly 64-bit C code, but maybe   
   > > 1000 lines of 16-bit assembler and C, will do what I   
   > > want, which is to restore a mini-BIOS on a UEFI-only   
   > > machine. I only need a few interrupts - 13H, 10H   
   > > and 14H.   
      
   > BIOS and UEFI are pretty much mutually exclusive.   
      
   > For instance, you mention INT 14h - that has been replaced   
   > in UEFI with the Serial Protocol ... an example serial protocol   
   > driver can be found here   
      
   And what is preventing my BOOTX64.EFI from hooking   
   INT 14H (RM16), switching to long mode, and calling the   
   UEFI Serial Protocol?   
      
   BFN. Paul.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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