Core2Duo: Move to\from C4 state
Posted: Wed Dec 29, 2010 3:02 pm
Hello,
I want to put Core2Duo into C4 state under vxWorks 6.8
So I ran the following code:
But it seems nothing happenes. Because the system clock is running every 1ms, the CPU is put back to C0
How can I configure the CPU to go back to C0 upon an APIC timer (for example) and not any other interrupt ?
Where can I find documentation on C4 sub states ?
Thanks,
Zvika.
I want to put Core2Duo into C4 state under vxWorks 6.8
So I ran the following code:
Code: Select all
mov EAX, 0x30 (Bits 0-3 define C4 sub state. What sub state shoud I use ?)
mov ECX, 0x0
mwaitHow can I configure the CPU to go back to C0 upon an APIC timer (for example) and not any other interrupt ?
Where can I find documentation on C4 sub states ?
Thanks,
Zvika.