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who know about 0fh of cmos?
Posted: Sun May 11, 2003 9:51 am
by bgcq
i see some introduce cmos the 0fh fieldis :
0Fh Shutdown Status Byte
the details means who know,can i use the byte to shutdown my computer? ???
Re:who know about 0fh of cmos?
Posted: Sun May 11, 2003 10:25 am
by Tim
No, that's the byte that tells the BIOS what to do when you reboot. To shutdown (power off) the computer, look up the int 15h functions.
Re:who know about 0fh of cmos?
Posted: Sun May 11, 2003 10:48 pm
by bgcq
thanks,
i find 15h of bios funtions:Manufacturing test scratch pad
,and only int 15h,it is no efect,do you know which ah sub funtions numbers and have you some other stuffs ?
Re:who know about 0fh of cmos?
Posted: Sun May 11, 2003 11:52 pm
by udarkman
Check this topic, I have included a code to shutdown, standby or suspend your system, monitor or secondarystorage, summarising the use of int 15h.
http://www.mega-tokyo.com/forum/index.p ... eadid=3690
but just tested in win98.
Im not so sure but, the byte you mentioned is just a indicator of how system is shutted down lastly and I think the OS updates it. For ins. at startup OS checks this byte and starts scandisk if computer not properly shutted down lastly.