Tony Tebby is probaby most famous for designing Qdos, the computer operating system used in the Sinclair QL personal computer, whilst working as a engineer at Sinclair Research in the early 1980s. He left Sinclair Research in 1984 in protest at the premature launch of the QL, and formed QJUMP Ltd., a software house specializing in system software and utilities for the QL, based in Rampton, Cambridgeshire, UK. Sinclair QDOS was the multitasking operating system found on the Sinclair QL and its clones. ... A computer is a device or machine for processing information from data according to a program — a compiled list of instructions. ... In computing, an operating system (OS) is the system software responsible for the direct control and management of hardware and basic system operations. ... A Sinclair QL The Sinclair QL, QL for Quantum Leap, was a personal computer launched by Sinclair Research in January 1984, as the successor to the ZX Spectrum. ... Sinclair Research Ltd was a home computer company founded by Clive Sinclair in Cambridge, England. ... The 1980s in its most obvious sense refers to the decade between 1980 and 1989. ... This page is about the year 1984. ... Cambridgeshire (abbreviated Cambs) is a county in England, bordering Lincolnshire to the north, Norfolk to the northeast, Suffolk to the east, Essex and Hertfordshire to the south, and Bedfordshire and Northamptonshire to the west. ...

Among the software developed by QJUMP was SuperToolkit II, a collection of extensions to Qdos and SuperBASIC; a Qdos floppy disk driver which became the de facto standard for the various third-party floppy disk interfaces sold for the QL; and the QJUMP Pointer Environment, which extended the primitive display windowing facility of Qdos into something approaching a full GUI. Tebby also received a commission to write a Qdos-like operating system for the Atari ST; this was called SMS2. Sinclair QDOS was the multitasking operating system found on the Sinclair QL and its clones. ... A floppy disk is a data storage device that is composed of a circular piece of thin, flexible (i. ... Gui is short for Guilherme or Guilhermo or an iteration of that, in English it translates to Will. ... The Atari 520 ST The Atari ST is a home/personal computer that was commercially popular from 1985 to the early 1990s. ...

Tebby later moved to Le Grand Pressigny, France, but continued his involvement in the QL user community. In the early 1990s, he developed SMSQ, a new Qdos-compatible OS, based on SMS2, for the Miracle Systems QXL, a QL emulator card for PCs. An enhanced version of SMSQ was ported to the Atari ST and various other QL emulators, being renamed SMSQ/E. The 1990s in its most obvious sense refers to the years 1990 to 1999. ... Miracle Systems were a manufacturer of Sinclair QL personal computer expansions in the 1980s. ... SMSQ/E is a computer operating system originally developed in France by Tony Tebby, the designer of the original QDOS system. ...

Since then, he has worked on Stella, an embedded operating system for 68000-series and ColdFire processors. The Motorola 68000 is a CISC microprocessor, the first member of a successful family of microprocessors from Motorola, which were all mostly software compatible. ... The Motorola Coldfire is a 68k architecture microprocessor manufactured for embedded systems development by Motorola (now Freescale Semiconductor). ...

External links

An extract from Sinclair and the 'Sunrise' Technology mentioning Tebby's involvement in the QL