Didn't work though did it :)) I have found some displays are more timing conscious than others. The code for the sprinkler required a large settling time but only a NOP at 10MHz. Perhaps the overhead of the C compiler didn't help. colin -- cdb, bodgy1@optusnet.com.au on 06/12/2002 Light travels faster than sound. That's why some people appear bright until they speak! -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body