>Hi, > >I am just wondering how I can access either BIOS calls, or preferably >registers under FreeBSD? > >I am trying to write a simple system capable of displaying graphics on >the screen, and I am pretty sure I can mmap the VGA memory to my >programs address space. > >However, to be able to output graphics onto the screen I think I need >to change the state of the VGA registers from text mode (I am guessing >thats what the console driver uses) to graphical mode (of which i know >there exist a couple) - but I think that involves programming >registers and I dont know how to do that under FreeBSD. > >Also, for the FreeBSD console driver to pick the console back up once >it finished working, would I be required to reset the VGA registers >back to text mode? > >Thanks, Alex J Burke.
FreeBSD runs in protected mode (for x86 processors) so you can't access to BIOS calls directly. You maybe need to see IN/OUT requests for VGA port. rookie _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
