Managing HP 48SX and 48GX Ports

June 26, 2016 - All Articles, HP48 Articles

Introduction This document explains how to add and remove RAM to emulated HP 48SX and 48GX ports. The concept of ports is explained as well as some of the related commands. Description of 48SX and 48GX Ports The HP 48GX and 48SX calculators both had 2 card slots where RAM and ROM expansion cards could [...]

Mapping HP48 Text to Unicode

July 11, 2012 - HP48 Articles

The Problem The HP48 calculators have a text encoding that is based on the Latin-1 character set (a.k.a. ISO 8859-1) with the exception of 34 of the control characters. These characters are 0x1F and 0x7F to 0x9F. Instead of leaving these characters as the normal Latin-1 control codes, HP re-purposed these mostly unused control codes [...]