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After supplying all your  Embedded Development Tool needs for 42 years
 Computer Solutions Ltd and its web shop are now closed.



 Having reached the grand old age of 75 it is time to relax and fulfil other ambitions.

 Its been an exciting ride with you, our customers, often on the bleeding edge of technology
 and I thank you for your friendship, your trust, and your orders.

Stay well        I wish you all success in your future projects.

Chris Stephens.



     But what to do with the web site ?  It has taken >12 man years of work to create a repository of knowledge on many aspects of the art and science of embedded microprocessor development and even after closing the shop it still gets over 4,000 visitors per month.  So as a service to my customers I have decide to keep it live providing my technical insights on the products and then redirecting viewers to sites where they can purchase the items they used to buy from us. Follow the link   "Home"

       The  "Information zone"  consists of articles produced as background tutorials on subjects of interest to those designing new products.  As different CPUs have became available this has lead to new development techniques and in particular to new ways of communicating between nodes.


Home Information Zone

Compact real-time operating system for microcontrollers


CMX-Tiny+™ from Computer Solutions is a compact real-time multi-tasking operating system which has been optimised to use the minimum amount of RAM space.

As a result, it is ideally suited to use with the latest generation of single-chip microprocessors or microcontrollers having only on-chip RAM plus flash memory (typically 4-32 kbyte).

The new system is based on a scaled-down version of the popular CMX-RTX product, retaining most of its power as well as the more frequently used functions. The code size is small enough for the processor's onboard ROM to support both the user's application code and the CMX-Tiny+ code.

CMX-Tiny+ also offers truly pre-emptive scheduling as well as co-operative scheduling, allowing interrupts to set task events and cause an immediate task switch if required.

The system is available for a range of processor families including MicroChip PIC18Cxxx, Freescale 68HC08, Hitachi H8/300, H8/300H and H8S, Atmel AVR family, Infineon 80C16x, Toshiba TLCS-900, NEC 78K0/K0S, TI MSP430 and STM ST7.

CMX-Tiny+ is distributed via a one-time licence fee, and does not require payment of royalties on deployed products. The RTOS includes the complete source code.

- ends - 


Computer Solutions Ltd is the UK's premier supplier of microprocessor development tools. It supplies a wide range of software and hardware tools that support over 100 different microprocessor families. Hardware products include; In Circuit Emulators, EPROM Emulators and Device Programmers. Software tools include; Assemblers, Debuggers, Compilers, Real time executives, TCP/IP stacks and other high level protocol libraries. 

With 23 years' experience, Computer Solutions Ltd has unrivalled expertise in embedded tools, consultancy and support.

For further colour photographs, graphics, technical or marketing information,

Contact: Chris Stephens, MD, Computer Solutions Ltd
Tel: 01932 829460

Press releases are available by email if you wish - send your request to

For more information on CMX-Tiny+

      CMX-Tiny+ on COMSOL's web site              CMX's web site


Home Information Zone
Computer Solutions Ltd
87 Briar Road,  Shepperton,  Middx,  TW17 0JB
Telephone: +44 (0) 77 4342 2526   
Email:      Web:
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