Lines Matching refs:RTC

180 2.2) RTC
186 The RTC is accessed through CMOS variables, which uses an index register to
188 of the CMOS and read of the RTC require lock protection (in addition, it is
189 dangerous to allow userspace utilities such as hwclock to have direct RTC
192 The RTC generates an interrupt which is usually routed to IRQ 8.  The interrupt
195 The type of interrupt is signalled in the RTC status registers.
197 The RTC will update the current time fields by battery power even while the
202 programmed to a 32kHz divider if the RTC is to count seconds.
204 This is the RAM map originally used for the RTC/CMOS:
253                        bit 7   = RTC has power
281 HPET is quite complex, and was originally intended to replace the PIT / RTC
292 In general, the HPET is recommended as a high precision (compared to PIT /RTC)
481 or the RTC, but the problem is the same: the host virtualization engine may not
500 Windows uses periodic RTC clocking as a means of keeping time internally, and