BillXORed by 8?Tue Nov 10 13:09:09 1998 I hope this is on topic:-)For UM this project the reference of the XORed by 8 was mentioned. I am really new but have already been trying to digest as much ASM as I can.From the book I just bought "Assembly Language Step by Step" it really only explained the XOR function as comparing the bits with a 1 for truth or 0 for false (truth table) thats where it leaves off. (Any book suggestions Welcomed Please).I assumed (that always gets me trouble) that it was comparing entries for the reg code. How does this command affect the operation of the registration for UM2.60? or am I really lost?Thanks very much!!Bill