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function busTickPeriod = GetBusTicksTick
% busTickPeriod = GetBusTicksTick
%
% OS X: ___________________________________________________________________
%
% Return the period of the GetBusTicks clock. The period of the
% GetBusTicks clock depends on your model of CPU and its clock speed.
% For reliable high-precision timing in standard units of seconds use
% GetSecs instead of GetBusTicks.
%
% GetBusTicksTick returns the period of the GetBusTicks clock. The
% frequency is found in the hw.busfreq field of the struct returned by
% Screen('Computer').
%
% OS 9: ___________________________________________________________________
%
% GetBusTicksTick does not exist in OS 9.
%
% WINDOWS: ________________________________________________________________
%
% GetBusTicksTick does not exist in Windows.
%
% _________________________________________________________________________
%
% SEE ALSO: GetBusTicks, GetSecs, GetSecsTick, Screen('Computer')
% HISTORY:
% 04/18/03 awi Wrote GetBusTick.m
% 7/10/04 awi Improved.
% 7/12/04 awi Added OS 9 and Windows sections.
if IsOSX
cInfo=Screen('Computer');
busTickPeriod=1/cInfo.hw.busfreq;
else
error(['GetBusTick function not implemented on platform ' computer ]);
end
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