----- Original Message ----- From: Subject: RTOS > My problem is how can I do to control the time loops, if the PIC 16F84 > have only one timer (TMR0)? Edson Go to http://www.amqrp.org/elmer160/lessons/ and download Lesson 13 --McD -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist