General info on 48/49/50 ROM entry points

[Joe Horn]

There is no book which covers ALL the entry points, because there are so many, but Jim Donnelly's book called "An Introduction to HP 48 System RPL and Assembly Language Programming" covers most of the important ones. It's available for free download as a PDF file in US Letter format and in European A4 format. Many thanks to Jim Donnelly for giving his permission for it to be freely available, and to Eric Rechlin for making the PDF versions from scratch since the original electronic copy was lost.