Christian,

I don't know if I know exactly what you mean. If I have a base address+(key*5) it should work fine but, how do I get a 1 byte value for each key press if I have a BCD nibble for the row and a binary byte for the column. Is there an easy way around this??? What about the problem of a binary byte of 10000000b, how will this work out in multiplication??? I guess the problem is things are so complex with this, Help...

Thanx again

Ben