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Hide information about Merlin Tonto

The Merlin Tonto computer was sold by British Telecom and was a re-badged version of the ICL One Per Desk Computer.

Both computers were released in late 1984 / early 1985 and based on the Sinclair QL Home Computer, and included improved ZX Microdrive units and a built in telephone and modem, phone directory, speech synthesizer and Psion Xchange on EPROM.  It was also released under the name Merlin Tonto for BT and the Computerphone for Telecom Australia (APT).  There were even a few machines released for North America.

The links between the these computers and the Sinclair QL relate mainly to the hardware, with the same 68008 CPU, the two main QL ULAs (the ZX8301 and ZX8302) and the built-in microdrives - the same method of RAM and screen management was also implemented, although most QL software will not run on the machine.  As with the QL, the One Per Desk included 128K of memory (with 32K being used for the screen), but also included an extra 2K of battery backed CMOS RAM.  It appears that the maximum memory that could be added was a further 128K (giving total 256K RAM), compared to the Sinclair QL - however, as it was planned for the majority of software to be provided on ROM (for immediate loading), this is not too much of a problem.

With everything built into the one unit, these proved popular with some call centres, although the additional hardware and even software is now quite rare.

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Rare BT Merlin Tonto M1887 Data Comms Adaptor

Rare BT Merlin Tonto M1887 Data Comms Adaptor

1 days, 14h:08m:10s £2.99 Bid Now!

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BT Merlin Tonto M1811 2 slot Rompack BT Merlin Tonto M1811 2 slot Rompack 1 days, 11h:48m:15s £2.99 Bid Now!
RARE Book: Business Computing on the Merlin Tonto by Stephen Morris RARE Book: Business Computing on the Merlin Tonto by Stephen Morris 1 days, 14h:07m:08s £6.99 Bid Now!
Rare BT Merlin Tonto M1887 Data Comms Adaptor Rare BT Merlin Tonto M1887 Data Comms Adaptor 1 days, 14h:08m:10s £2.99 Bid Now!
Rare BT Merlin Tonto M1824 Datalink Cartridge Rare BT Merlin Tonto M1824 Datalink Cartridge 1 days, 14h:09m:10s £2.99 Bid Now!
Rare BT Merlin Tonto VT-Link Cartridge Rare BT Merlin Tonto VT-Link Cartridge 1 days, 14h:11m:13s £2.99 Bid Now!
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RWAP Software - Retro computer specialists
RWAP Software - Retro computer specialists

Although our roots are firmly based with the Sinclair QL, we supply a wide range of second hand and original software and hardware, for both the QL, ZX Spectrum and Commodore 64.

Over the past few years, we have been instrumental in getting the DivIDE Plus compact flash interface for the ZX Spectrum built, along with replacement ZX81 Keyboard Membranes, 48K ZX Spectrum keyboard membranes and ZX Spectrum faceplates.

Visit our website - http://www.rwapsoftware.co.uk for more details on what we offer.

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