Patent ID: 7356725

Claim:
A method of steering a time of day (TOD)-clock for a computer system having a physical clock providing a time base for executing operations That is steeping to a common oscillator, said method comprising the steps of: computing a TOD-clock offset value (d) to be added to a physical clock value (Tr) to obtain a logical TOD clock value (Tb), said logical TOD clock value being adjustable without adjusting a stepping rate of said oscillator, wherein said TOD-clock offset value (d) is computed according to: d=b +( Trâˆ’s )Ã— r where (b) is a base offset value aligned with bits of (Tr), (s) is a current start time value aligned with bits of (Tr), and, (r) is a current steering rate value, said s, b and r values defining TOD-clock steering adjustment values.