In a message dated 1/2/99 2:39:38 AM Eastern Standard Time, TGaArdvark@aol.com writes: > Um, what kind of logic is that? You're saying that the > 1/200s interrupts must be off when the calc is off because > they are off when the calc is off? Did I follow you correctly? > no. i'm saying that if they were on, then the calc would never be off. they HAVE to be off for the calc to be off