RFC: Is BSP allowed to modify configuration values?

[Aaron J. Grier]

On Tue, Oct 19, 2004 at 08:05:58PM +0200, Thomas Doerfler wrote:
> B) At runtime, accumulate the timing error generated and drop timer
> interrupt handling from time to time to get, in average, a correct
> advancement in time. The disadvantage here is, that the RTEMS tick no
> longer will advance at evenly spaced intervals

my hardware has a 9.984ms tick, instead of a more convenient 10ms tick.
I have a patch to RTEMS' time-of-day routines which basically carries a
rolling error (in microseconds) and either inserts or skips calls to the
time-of-day watchdog.

this has the nice effect of keeping a standard length tick without
losing wall-clock timekeeping.

-- 
  Aaron J. Grier  |   Frye Electronics, Tigard, OR   |  aaron at frye.com
  "Note that many bands' backline amps produce levels exceeding OSHA
   standards for industrial facilities.  Yet this is considered normal
   working conditions for musicians.  That's showbiz." -- Scott Dorsey