MACHINE REFERENCE

Dragon 32

The Dragon 32 was Wales’s one serious entry in the home computer boom, built in Swansea and then Port Talbot around a Motorola 6809E rather than the Z80 or 6502 nearly everyone else was using. It’s a decision that still divides opinion: the 6809 was arguably the most sophisticated 8-bit chip of its generation, with instructions and addressing modes the Spectrum’s Z80 simply didn’t have — and almost nobody wrote software clever enough to actually use them.

Why it matters

The Dragon 32 matters less for what it did than for what it represents: a genuinely capable piece of British engineering, backed by serious investors including the Welsh Development Agency, that lost a war fought on shelf space and marketing rather than silicon. Underneath the case is a design closely related to Tandy’s TRS-80 Color Computer, sharing enough of its architecture that CoCo software would often run with minimal adaptation — a sensible piece of pragmatism from a company that, by its own admission, had no prior experience designing a computer and hired external consultants to do it. What sank Dragon Data wasn’t the 6809, it was everything around it: a 64 KB model that arrived a year late, colour graphics that topped out at four shades against the Spectrum’s mould-breaking marketing, and a disk system and OS-9 software that turned up only after the market had already decided. By June 1984 the company was in receivership with warehouses of unsold stock, sold off for a fraction of what it had cost to build.

What to check before you buy

  • Ask whether the original external PSU is included and has been tested — Dragon Data's transformer-based supply is a known point of failure, and a dead or dodgy one is the single most common reason a "for spares" listing exists.
  • Check the keyboard responds cleanly across all keys — cracked membrane and power-board PCBs are a documented Dragon 32 issue, and a keyboard that skips or double-types usually means a board that needs attention, not just a clean.
  • Look at the screen output before buying if at all possible: colour fringing, a rolling "rainbow effect" or garbled text on power-up point to ageing capacitors and ICs around the video circuit rather than anything a cable swap will fix.
  • Confirm what's actually included — a Dragon 32 without its RF/composite lead or a compatible cassette recorder is a much smaller purchase than it first looks.
  • If buying for software, check whether it's cassette or cartridge-based collection you're after — DragonDOS disk software and drives are comparatively rare and command a premium over the tape-based library.
Dragon 32

Photo: Liftarn (Staffan Vilcans), edited by Bill Bertram (Pixel8), Wikimedia Commons (CC BY-SA 2.0)

Released

1982

RAM

32 KB

CPU

Motorola 6809E, 0.89 MHz

Launch price

£199.50 at launch (August 1982); cut to around £175 not long after to better compete against the Sinclair Spectrum’s pricing

Manufacturer

Dragon Data Ltd (Swansea, later Port Talbot, Wales)

Form factor

All-in-one keyboard computer (wedge-style case, full-travel keyboard, no built-in display)

CPU

Motorola 6809E, 0.89 MHz

Chipset

SN74LS783/MC6883 Synchronous Address Multiplexer (SAM); two MC6821 Peripheral Interface Adapters (PIAs)

RAM

32 KB

ROM

16 KB (Microsoft Extended Color BASIC)

Graphics

Motorola MC6847 Video Display Generator – text mode (32×16, upper case only), semigraphics 64×48 in 8 colours, 128×192 in 4 colours, 256×192 monochrome

Audio

1-bit (single-bit) sound via PIA, no dedicated sound chip

Storage

Compact cassette (standard); optional 5.25″ floppy disk via DragonDOS or Delta DOS disk controller

Ports

RF/composite video out, two analogue joystick ports, cassette port, Centronics-style parallel printer port (via PIA), 40-pin edge-connector cartridge (“Program Pak”) slot, reset button. No RS-232 on the 32 (added on the Dragon 64).

OS

Microsoft Extended Colour BASIC in ROM; FLEX and OS-9 available with disk/memory expansion

PSU

External mains transformer supplying 8.5VAC and 28VAC to an internal power board, regulated to +12VDC, +5VDC and -5VDC

Units sold

Unknown precisely – over 40,000 sold by the end of 1982, rising to roughly 80,000 by the 1984 collapse; a combined Dragon 32/64 lifetime total is sometimes cited around 250,000 but isn’t independently corroborated

Successors

Dragon 64 (November 1983, same core design with 64 KB RAM and an added RS-232 port); after Dragon Data’s 1984 collapse, Spanish buyer Eurohard released the Dragon 200 and Dragon 200-E; a more ambitious “Dragon Alpha” successor was designed but never released before Eurohard itself collapsed in 1987

  • Cracked keyboard and power board PCBs
    Stress cracks in the keyboard membrane PCB and the small power board (which also carries the video, RF and power connectors) are a well-documented Dragon 32 fault, usually presenting as dead or erratic keys, or intermittent power/picture.
    The Dragon Archive — Dragon 32 Service Information →
  • No picture or sound on power-up
    A documented fault tree in Dragon Data's own service bulletin points to the transformer, the power board's PL10 connector and diodes, or a poorly-seated IC15 as the usual suspects when a Dragon 32 shows no picture or sound at switch-on.
    The Dragon Archive — Dragon 32 Service Information →
  • Faulty colour, "rainbow effect" or garbled screen
    Ageing capacitors around the MC6847 video circuit (notably C7 and C58) are a known cause of colour faults and background interference lines; Dragon Data's own service notes prescribe specific trimmer/capacitor swaps to fix it, and garbled on-screen "garbage" often traces to failing ICs (15, 17 or 18) on the video/logic board.
    The Dragon Archive — Dragon 32 Service Information →
  • 1982 Dragon Data spun off from toy manufacturer Mettoy (with Prutec, Hill Samuel and the Welsh Development Agency taking stakes) to build the Dragon 32, designed under the codename "Pippin"
  • 1982 Dragon 32 launched in August, built around the Motorola 6809E and closely related to the Tandy TRS-80 Color Computer
  • 1983 Dragon 64 launched in November, adding 64 KB RAM and an RS-232 serial port in largely the same case
  • 1984 Dragon Data entered receivership in June, having built up a large stock of unsold machines; assets sold to Spanish firm Eurohard S.A. for just over £1 million
  • 1985–1987 Eurohard released the Dragon 200 and 200-E for the Spanish market before it too went into receivership in 1987, ending the Dragon line