cvs commit: src/sys/boot/i386/cdboot cdboot.s

[John Baldwin]

jhb         2004/01/24 17:20:36 PST

  FreeBSD src repository

  Modified files:        (Branch: RELENG_5_2)
    sys/boot/i386/cdboot cdboot.s 
  Log:
  MFC: Save %cx around calls to the BIOS to read data to workaround bugs in
  certain BIOSs when booting from a USB CD-ROM.  Also, fix the twiddle to
  actually twiddle.
  
  Approved by:    re
  
  Revision  Changes    Path
  1.9.8.1   +4 -1      src/sys/boot/i386/cdboot/cdboot.s