A half hearted compile of your code (Alian) for the 16F873A gave an error with DEFINE INTHAND _Blink.

I changed it to DEFINE INTHAND Blink and it did not come out of sleep (I presume) the same code compiles OK for the 16F628A.

I am sorry , I was busy with some other job, but today I shall try your code for the intended chip and post results.

Thank you for all your help,

regards