Talk:High Precision Event Timer

I have a setting to enable/disable HPET in my BIOS on my motherboard.

Identifying systems with HPET

A rather obvious question I came here for that is currently unaddressed in this article is: how do you know if a system includes an HPET? After all, regardless of what OS you have, you can't use HPET if its hardware isn't there. Is the HPET a separate IC? Is it incorporated into motherboard support chips? Are there CPU-based associations? I didn't notice anything in the two supporting documents that specifically addressed real-world implementations of this functionality. ~ Jeff Q (talk) 18:57, 24 September 2007 (UTC)[reply]

Some initial hints: it appears to be incorporated into at least one southbridge (ATI's SB600), which I guess makes sense because southbridges handle real-time clock circuitry. Someone also claims HPET is support in the VIA 8237 but not the 8235. ~ Jeff Q (talk) 19:13, 24 September 2007 (UTC)[reply]

This is helpful - but is there anything in dmesg output or cpu flags which could indicate this? informedbanker (talk) 01:09, 16 February 2008 (UTC)[reply]

—Preceding unsigned comment added by Informedbanker (talk • contribs) 01:06, 16 February 2008 (UTC)[reply]

Replacing Timers

"HPET is meant to supplement and replace the 8254 Programmable Interval Timer (PIT) and the Real-time clock's (RTC) periodic interrupt function" How is this done, e.g. in circuitry, the BIOS, the OS? -- AzzAz (talk) 20:31, 28 February 2008 (UTC)[reply]