Difference between revisions of "FAQ"

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=== How can I write to port 0x80 from userspace? ===
=== How can I write to port 0x80 from userspace? ===


[http://www.linuxbios.org/pipermail/linuxbios/2006-November/017012.html This] might be useful sometimes:
[http://www.linuxbios.org/pipermail/linuxbios/2006-November/017012.html This] might be useful in some situations:


  printf "\001" | dd bs=1 seek=128 of=/dev/port
  printf "\001" | dd bs=1 seek=128 of=/dev/port


in DOS (not winXP) use sequence''mov al, 42''  ;   ''out al, 80h''  to output 42. type ''o 80 42'' in dos debug.
In DOS (not Windows XP) use:
  mov al, 42; out al, 80h
To output 42 type
o 80 42
in DOS debug.


=== Is LinuxBIOS applying x86 microcode patches? ===
=== Is LinuxBIOS applying x86 microcode patches? ===

Revision as of 23:17, 7 April 2007