Strange delay value on Task

I'm working with LPC2478 micro with RTX and I noticed a strange behaviour on delay associated to a task during execution. Sometimes, in a unpredictable way, a task that should start every 1 second...
Strange delay value on Task

I'm working with LPC2478 micro with RTX and I noticed a strange behaviour on delay associated to a task during execution. Sometimes, in a unpredictable way, a task that should start every 1 second...
LPC2148 - Calculating Prescale Register value for 1 millisecond delay using Timer

LPC2148 - How to calculate Prescale Register value to get 1 millisecond delay using Timer ? The Peripheral clock is running at 12Mhz frequency. Can anyone state the formula for this ? Awaiting...
LPC2148 - Calculating Prescale Register value for 1 millisecond delay using Timer

LPC2148 - How to calculate Prescale Register value to get 1 millisecond delay using Timer ? The Peripheral clock is running at 12Mhz frequency. Can anyone state the formula for this ? Awaiting...
Delay routine problem

I want to create delay functions in a separate c file. The code should be as perfect as possible without using internal timer. I read somewhere that 'Calling the routine takes about 22us' Though 22uS...