Hi Al,

sorry, it seems, my English skills are not so good to tell you what I mean. Your reply tells that. Since you wrote about three interupts, but the 8051 was only able to have two interrupts in progress.
I think, there is a big difference, if I tell about "two interrupts in progress" but you about "three interrupts".
So I thing, I must give you the example and then I hope you understand the difference.


Peter