home bbs files messages ]

Forums before death by AOL, social media and spammers... "We can't have nice things"

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

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]

   Message 3,371 of 4,255   
   Joe Monk to Joe Monk   
   Re: segmentation   
   24 Oct 22 12:03:06   
   
   From: joemonk64@gmail.com   
      
   On Monday, October 24, 2022 at 1:41:20 PM UTC-5, Joe Monk wrote:   
   > > No. Right from boot time, you are required to load the stack   
   > > segment, as there is no guarantee that that is set to a sensible   
   > > value. Nor is DS.   
   > Says who?   
   >   
   > At power on, the processor begins execution from location 0xFFFF0. So, if my   
   program can execute in 64k, then I dont need to do anything with loading   
   segment registers.   
   >   
      
   And BTW, if you go look at the original PC BIOS, you will see that it executes   
   without loading any segment registers...   
      
   Joe   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]


(c) 1994,  bbs@darkrealms.ca