The Q40 and Q60 (sometimes known generically as the Qx0 series) are computer motherboards designed in the late 1990s, based on the Motorola 68040 and 68060 microprocessors respectively and intended to be partially compatible with the Sinclair QL microcomputer . Later these were sold as a fully assembled computer in an AT desktop case .
10-615: Q40 may refer to: Q40 (motherboard) , compatible with the Sinclair QL Q40 (New York City bus) Al-Shamikh , a corvette of the Royal Navy of Oman Ghafir , the 40th chapter of the Quran Infiniti G-series (Q40/Q60) , an automobile Samsung Sens Q40, a laptop [REDACTED] Topics referred to by the same term This disambiguation page lists articles associated with
20-457: A generic framework for filesystems and device drivers . Very basic screen window functionality was also provided. This, and several other features, were never fully implemented in the released versions of QDOS, but were improved in later extensions to the operating system produced by Tebby's own company, QJUMP. Rewritten, enhanced versions of QDOS were also developed, including Laurence Reeves' Minerva and Tebby's SMS2 and SMSQ/E . The last
30-473: Is produced and marketed by Derek Stewart (of former D&D Systems). Three operating systems are available for the Q40/Q60; these comprise QDOS Classic (an enhanced version of Qdos 1.10 ), SMSQ/E and a custom Linux distribution . This computer hardware article is a stub . You can help Misplaced Pages by expanding it . Sinclair QDOS QDOS is the multitasking operating system found on
40-526: Is the most modern variant and is still being improved. QDOS versions were identified by numerical version numbers. However, the QL firmware ROMs as a whole (including SuperBASIC) were given two- or three-letter alphabetic identifiers (returned by the SuperBASIC function VER$ ). The following version of QDOS were released (dates are estimated first customer shipments): The localised versions of QDOS were identified by
50-597: The Q40i ; essentially a Q60 board with a 40 MHz 68040. The Q60 became available in 1999. It is a revised board with a 66 MHz 68060 ( Q60/66 ) or 80 MHz 68LC060 ( Q60/80 ) processor and support for up to 128 MiB of RAM. In 2013 Peter Graf announced that he was working on the Q68 , a FPGA based QL compatible single board computer. The Q68 was first presented to the public in April 2014 and became available in autumn 2017. It
60-531: The Sinclair QL personal computer and its clones. It was designed by Tony Tebby whilst working at Sinclair Research , as an in-house alternative to 68K/OS , which was later cancelled by Sinclair, but released by original authors GST Computer Systems . Its name is not regarded as an acronym and sometimes written as Qdos in official literature. QDOS was implemented in Motorola 68000 assembly language , and on
70-629: The United Kingdom . Peter Graf designed it to fit any standard AT form factor computer case , although D&D later sold it as complete, fully assembled computer. The Q40 consists of a sub- AT form factor board comprising a 40 MHz 68040 processor, 1 MiB of video RAM , and several PLDs implementing a QL-compatible video display generator, an ISA bus, stereo 20 kHz audio DACs and an AT keyboard interface. Floppy disk , ATA hard disk , RS-232 and Centronics printer port interfaces are provided by an ISA "multi-I/O" card in one of
80-610: The QL, resided in 48 KB of ROM , consisting of either three 16 KB EPROM chips or one 32 KB and one 16 KB ROM chip. These ROMs also held the SuperBASIC interpreter, an advanced variant of BASIC programming language with structured programming additions. This also acted as the QDOS command-line interpreter . Facilities provided by QDOS included management of processes (or "jobs" in QDOS terminology), memory allocation, and an extensible "redirectable I/O system", providing
90-615: The same title formed as a letter–number combination. If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Q40&oldid=1118960851 " Category : Letter–number combination disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Q40 (motherboard) The Q40 and Q60 motherboards were designed by Peter Graf of Germany and manufactured by D&D Systems of
100-458: The two ISA slots provided. Up to 32 MiB of FPM or EDO RAM can be installed in two 72-pin SIMM slots. Also included are sockets for two ROM devices, 2 kiB of non-volatile RAM and a real-time clock . Both of the QL's standard video modes are supported, plus two extended modes: 512×256 or 1024×512 pixels with 16-bit colour . The Q40 board was produced in limited quantities before being superseded by
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