freebsd-src/sys/isa
Garrett Wollman 3f31c649d1 Redo Kernel NTP PLL support, kernel side.
This code is mostly taken from the 1.1 port (which was in turn taken from
Dave Mills's kern.tar.Z example).  A few significant differences:

1) ntp_gettime() is now a MIB variable rather than a system call.  A few
fiddles are done in libc to make it behave the same.

2) mono_time does not participate in the PLL adjustments.

3) A new interface has been defined (in <machine/clock.h>) for doing
possibly machine-dependent things around the time of the clock update.
This is used in Pentium kernels to disable interrupts, set `time', and
reset the CPU cycle counter as quickly as possible to avoid jitter in
microtime().  Measurements show an apparent resolution of a bit more than
8.14usec, which is reasonable given system-call overhead.
1994-09-18 20:40:01 +00:00
..
ic Updated driver to the 1.1.5 version: 1994-09-17 16:56:10 +00:00
atrtc.c Redo Kernel NTP PLL support, kernel side. 1994-09-18 20:40:01 +00:00
fd.c Fixed the problem where the floppy has incorrectly failed probing 1994-09-17 18:08:36 +00:00
fdc.h Updated driver to the 1.1.5 version: 1994-09-17 16:56:10 +00:00
fdreg.h Updated driver to the 1.1.5 version: 1994-09-17 16:56:10 +00:00
kbdtables.h Updated swedish keymap. 1994-04-26 09:24:06 +00:00
rtc.h Enable use of the RTC chip for the statistical clock. While this does 1994-08-15 03:15:20 +00:00
sio.c Digicom Systems Inc, makes "softmodems". What this means is simply that 1994-09-13 03:30:31 +00:00
sioreg.h Removed all patch kit headers, sccsid and rcsid strings, put $Id$ in, some 1993-10-16 19:17:18 +00:00
syscons.c Added support for many more videomodes, including graphic modes up til 1994-09-15 07:26:40 +00:00
timerreg.h Removed all patch kit headers, sccsid and rcsid strings, put $Id$ in, some 1993-10-16 13:48:52 +00:00