Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== Sigma Research ====== Sigma Research were based in Cambridge and sold three items: [[qlwiki:Sigma Research Joystick Adaptor]] - Converted the QL's BT style joystick ports to work with a standard Atari (9 pin D) joystick port\\ [[qlwiki:Sigma Research Parallel Printer Interface]] - A Centronics interface\\ [[qlwiki:Sketch Pad]] - A graphics drawing program\\ qlwiki/sigma_research.txt Last modified: 2023/08/25 12:21by 127.0.0.1