Andrew Pennell

Andrew Pennell was working on a machine code debugger for his Spectrum QL as part of his university 3rd year project. This turned into working for HiSoft and writing Hisoft Devpac QL.

He also authored two books:-

• The Sinclair QDOS Companion
• Assembly Language Programming on the Sinclair QL

Andrew also wrote articles for computer magazines including:-

• Your Spectrum / Your Sinclair