where am I wrong?

[Geoff Quickfall]

Ah, never did the memory module byte jumper creation, didn't have one.

I see you are referring to page 1 of the book.

A basic hp41 would only have 63 registers so with a single memory module installed and size 63 should allow program entry. How many registers do you have with the module installed and size set to zero? Maybe the memory module is non functional. Also ensure module in port 1 for this.

By the way, this is only an example to show STO M. In itself, it is not a real functional way of producing synthetics. Going to page 25 is a description of the "byte Jumper" which is used o produce synthetic functions and then the ultimate, Load Bytes routine and Synthetic ky assignmen assignments. You do not need the memory module to create synthetic functions.

Geoff