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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.

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Topics: Sinclair QDOS, Sinclair QL, Sinclair ZX80, Sinclair ZX81...

SinclairSinclair can refer to the following companies: Sinclair Broadcast Group (SBG), the operator of the largest number of local television stations in the United States Sinclair Research, a computer company founded by Clive Sinclair There are several people na	Sinclair QLThe Sinclair QL QL for Quantum Leap was a personal computer system launched by Sinclair Research in January, 1984. A successor to the ZX Spectrum, the QL was designed with the hobbyist and small business market in mind. The computer used a Motorola 68008	Sinclair ZX80The Sinclair ZX80 was a home computer brought to market in 1980 by Sinclair Research. It was notable for being the first computer available in the United Kingdom for under a hundred pounds (a pricetag of £99. 95, to be exact). It was available in kit form
Sinclair ZX81The Sinclair ZX81 home computer, released by Sinclair Research in 1981, was the followup to the company's ZX80. The case was black, with a membrane keyboard; the machine's distinctive appearance was the work of industrial designer Rick Dickinson. Video ou	Sinclair LewisSinclair Lewis ( February 7, 1885 January 10, 1951) was an American novelist and playwright. Born Harry Sinclair Lewis in Sauk Centre, Minnesota, he began reading books at a young age and kept a diary. A dreamer, at age 13 he unsuccessfully ran away from	Sinclair C5A Sinclair C5 Launched in Great Britain on 10 January 1985, the Sinclair C5 was a three-wheeled personal transport electric vehicle invented by Sir Clive Sinclair. Relatively cheap to purchase (it sold for £399 + £29 for delivery), it quickly became an ob
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