hello,
First,I must say "Thank you" for youre RTL code about 8051,which I have download from www.opencores.org.
And I have done some research on it.But I have some questions about it.

For example,what is the meanings of "op_pos",which is internal variable in
oc8051_memory_interface.v , and how to control it?

My written English is not very good,could you understand me?Thanks.

I am desired your help.

Tom