Hello Octocontrabass
if i read and write elkhart lake RTC register with assembly in and out instruction (0x70 and 0x71)
RDC, 614109- chapter 27.2
but i if do it with mmio(FD00000h + 70h/71h) i am not able to do it. i am using the same procedure as we do with in and out instruction
thanks
Ravi
RTC
-
- Member
- Posts: 5546
- Joined: Mon Mar 25, 2013 7:01 pm
Re: RTC
That looks like a copy/paste error in the datasheet. You can't use MMIO to access the RTC.
Re: RTC
Hello Ravi,
i still get no valid values (most 0) reading RTC of Elkhart Lake using
asm out/in 70h/71h
and there is no entry in the windows device manager, where the resource is described.
So, i think, i must use mmio FD00000h + 70h/71h as descrbed in the Intel Document Number: 636722 Chap 26.2.
i am stil confused about this chapter. Is port io still supported?
do you got it working for Elkhart Lake? with which tech (pio or mmio)?
thank you
Tito
i still get no valid values (most 0) reading RTC of Elkhart Lake using
asm out/in 70h/71h
and there is no entry in the windows device manager, where the resource is described.
So, i think, i must use mmio FD00000h + 70h/71h as descrbed in the Intel Document Number: 636722 Chap 26.2.
i am stil confused about this chapter. Is port io still supported?
do you got it working for Elkhart Lake? with which tech (pio or mmio)?
thank you
Tito