Sinclair QDOS - Definition and Overview

Sinclair QDOS was the multitasking operating system found on the Sinclair QL and its clones.

Rewritten, enhanced versions exist in the form of Minerva, SMS2 and SMSQ/E. The latter being the most modern one which is still being improved.

Originally written for the Motorola 68000 CPU, with a 48k ROM for a computer with only 128k RAM.

Sinclair QDOS included the SuperBASIC interpreter, a well designed variant of BASIC with structured programming additions.

External links

• Sinclair QDOS Internals (http://www.dunbar.cwc.net/qdos/qdos.html)
• SuperBASIC (http://www.intermedia.c3.hu/~szmz/comparch/muzeum/muzeum/sinclair/ql/qlbasic.htm)
• SMSQ/E Source Code (http://www.scp-paulet-lenerz.com/smsqe/)
• Dilwyn Jones's QL and QDOS pages (http://homepages.tesco.net/dilwyn.jones/index.html)