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

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   Message 4,061 of 4,255   
   Paul Edwards to James Harris   
   Re: com port   
   19 Dec 23 17:16:25   
   
   From: mutazilah@gmail.com   
      
   On 13/12/23 04:12, James Harris wrote:   
   > On 29/08/2022 19:44, muta...@gmail.com wrote:   
   >> On Monday, August 29, 2022 at 9:57:57 AM UTC+8, Joe Monk wrote:   
   >>>> The big problem with UEFI is that it is 64 bit   
   >>>> when my os and compiler are 32 bit as they   
   >>>> have been for 3 decades.   
   >>> No, there is 32 bit UEFI also.   
   >>   
   >> I believe it doesn't exist on most new machines.   
   >>   
   >> So all software that transitioned from   
   >> bios to 32 bit UEFI has been obsoleted   
   >> as part of a scam.   
   >   
   > Where the processor supports 32-bit as well as 64-bit modes, 64-bit UEFI   
   > boot code can, after loading a 32-bit OS, switch to 32-bit mode and   
   > start the OS.   
   >   
   > IOW you can still use your 32-bit OS via 64-bit UEFI boot.   
      
   On 13/12/23 04:12, James Harris wrote:   
    > On 29/08/2022 19:44, muta...@gmail.com wrote:   
    >> On Monday, August 29, 2022 at 9:57:57 AM UTC+8, Joe Monk wrote:   
    >>>> The big problem with UEFI is that it is 64 bit   
    >>>> when my os and compiler are 32 bit as they   
    >>>> have been for 3 decades.   
    >>> No, there is 32 bit UEFI also.   
    >>   
    >> I believe it doesn't exist on most new machines.   
    >>   
    >> So all software that transitioned from   
    >> bios to 32 bit UEFI has been obsoleted   
    >> as part of a scam.   
    >   
    > Where the processor supports 32-bit as well as 64-bit modes, 64-bit UEFI   
    > boot code can, after loading a 32-bit OS, switch to 32-bit mode and   
    > start the OS.   
    >   
    > IOW you can still use your 32-bit OS via 64-bit UEFI boot.   
      
   If I had made my OS do 32-bit UEFI calls instead of 16-bit   
   BIOS calls, as advertised, then all that work would have   
   been wasted. 16-bit BIOS was more resilient. ie not   
   requiring a rewrite as 64-bit UEFI caused.   
      
   BFN. Paul.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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