> BTW, it is possible to properly use the RETLW as a lookup table in=20 > PIC24/dsPIC assembly code. >=20 > mov ,W0 > bra W0 > retlw valuefor0 > retlw valuefor1 > retlw valuefor2 > .etc. >=20 > This is significantly slower than using PSV, but is very simple to use. Thanks. As you and Isaac demonstrate, there are now many ways to access memory and data. I'm sure as I work through this project I'll find reasons to try them all I note that the 18F series appears to be the last to have Computed Goto (ie modifying PCL) in the index Joe --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .