Hi Bordyn,

I see not exactly, what you want to do, but it sounds a little like this:

http://www.8052.com/forum/read.phtml?id=6984&top=

If yes, read also the other postings.

But if you only want 2 interrupt priorities, then all what you need was setting the appropriate bits in the IP register.
Then it was fully doing by the 8051 hardware.


Peter