Sinclair QL

~ the obit ~

Clive Sinclair announced the QL on 12 january 1984 at a London event staged twelve days before Apple showed the Macintosh, which was not a coincidence. The name stood for Quantum Leap and the pitch was a serious machine for £399: a 32-bit Motorola 68008 with 128K of memory, running a multitasking operating system, with an office suite from Psion in the box. Sinclair took orders on a promise of delivery within twenty eight days.

The first machines went out slowly in april, three months late, and the early ones had a plastic dongle of extra ROM hanging out of the expansion port because the firmware had not been finished in time to fit inside. Reviewers noticed. The keyboard was a membrane under plastic keys and felt like one. The two Microdrives, endless loops of tape running past a fixed head, were the same storage Sinclair had bolted onto the Spectrum, and they were still unreliable in exactly the way tape loops are unreliable.

It sold around 150,000 units. The people it was built for, small businesses moving off paper, were being sold IBM PCs and clones by salespeople who could point at other businesses running the same thing. The people who already owned a Sinclair had five thousand Spectrum games to walk away from and about seventy QL titles to walk toward. UK production stopped during 1985, and when Amstrad bought Sinclair's computer products in april 1986 for around five million pounds, the QL was discontinued as part of the tidy-up.

1984 is the year I was born, so there is no angle here that runs through my own hands, and the QL never had a Turkish market for me to have missed. What holds up from a 2026 desk is the arithmetic. A hundred and fifty thousand machines is a failure by any number Sinclair cared about, and one of those machines went to a teenager in Helsinki who found its operating system good enough to be interesting and closed enough to be infuriating. Linus Torvalds has said as much repeatedly. A product can be measured in units or in who it reached, and the two figures have almost nothing to say to each other.

~ the rap sheet ~

~ what was in the box ~

The 68008 was Motorola's cost-reduced 68000 with an eight-bit external bus, running at 7.5 MHz, which meant genuine 32-bit registers behind a memory path narrow enough to hold them back. Memory started at 128K and could be pushed to 896K. QDOS underneath it was a real multitasking operating system with a job scheduler, in a home machine, in 1984.

SuperBASIC was better than the language on almost anything else in the price range, with proper procedures and structured control. The bundled Psion suite covered writing and spreadsheets, with a database and a charting tool alongside them, and it was the same code that became the foundation of Psion's later software business. Two RS-232 ports and a proprietary network connector on the back said clearly who Sinclair thought was buying it.

~ the cracks ~

Announcing a product before it exists is normal. Taking money for it and then missing the delivery window you printed in the advertisement is a different thing, and the QL did that at scale in a market where the trade press was already sharpening its knives over the Spectrum's build quality. The Advertising Standards Authority took an interest.

Then the machine that arrived did not settle the argument. Microdrive tapes stretched and the keyboard fought you. The serial ports had been designed around Sinclair's own accessories closely enough that connecting an ordinary printer became a project rather than a purchase. None of it was fatal on its own, and together it meant the QL never got the word of mouth that carries a machine into its second year.

~ how it actually ended ~

Sinclair Research was in trouble for reasons that had little to do with the QL. The C5 electric tricycle launched in january 1985 and became a national joke inside a month, and by the middle of that year the company was carrying stock of everything it made and could not move any of it. Robert Maxwell circled and walked away. Amstrad took the computers and the Sinclair name in april 1986 for a figure usually reported at five million pounds, kept the Spectrum going in a cheaper form, and killed the QL outright.

Sinclair himself kept inventing until his death in 2021, mostly things nobody bought. The QL was the last machine his company designed as a serious computer rather than a cheap one, and it is the one that broke the run.

~ the long tail ~

QDOS outlived its hardware. Independent replacement ROMs kept appearing through the late eighties, and SMSQ/E carried the operating system onto Atari and then onto emulators, where a small group still runs it. Q40 and Q60 boards were built in the nineties by people who wanted the environment on hardware that worked.

ICL had already licensed the design for the One Per Desk, an office terminal with a QL inside it and a telephone bolted to the side, sold in Britain and rebadged elsewhere. It is the only version of the QL that did the job the QL was announced to do, and it did it for a customer Sinclair could never have reached.

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