In the articles forum there is an article about creating a ROM dump from the HP-42S into a HP-48.
There are several types of the HP-48: HP-48SX, HP-48S, HP-48G, HP-48G+, HP-48GX, HP-48GII. Will it work with any of these calculators or just a specific model?
Another thing I would like to know is, does a device exist that connects to a Windows computer and that can pick up the infra-red output from a HP-42S and store it in a text file, just like it would print on a HP-82240A printer?