well I am a student doing assignments at home. I do not have a eprom eraser so you should be able to see how this would help me out.

Also I think I have figured this out anyways, in the 8052ah chip and expression can be placed after the rrom where as the 80c52 chip it has to be a integer constant, e.g. rrom 5 not rrom x

thanks for the help though

Mike Cooper