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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

Small embedded systems can now support SNMP and Wireless Ethernet functionality

Small embedded systems can now support SNMP and Wireless Ethernet functionality

Computer Solutions has introduced an enhanced version of the CMX-MicroNet TCP/IP stack offering SNMP (Simple Network Management Protocol) and Wireless Ethernet 802.11b functionality as well as supporting additional processors.

As well as adding the 68HCS12 and dsPIC to the long list of 8- and 16-bit chips that can run MicroNet, a version is now available to support the increasing number of single-chip ARM CPUs.

The new SNMP add-on option is a memory-efficient, highly portable, complete software development kit designed for embedded systems developers requiring remote network management as provided by SNMP V1 or SNMP V2c for their applications running on processors with limited memory resources.

The SNMP implementation features a very small footprint which is suitable for inclusion in the internal memory of single-chip processor designs already supported by CMX-MicroNet. As a result, it provides system designers and software developers with a simple, cost-effective means to create a wide variety of hardware devices that can connect directly to corporate networks.

The SNMP option requires as little as 8 kbyte of memory on an 8051, involves no memory management or multitasking features, and supports SET, GET, NEXT, TRAP, and GETBULK functions. Code is implemented to facilitate the request-response mechanism of SNMP.

The Wireless Ethernet option supports the IEEE 802.11b protocol, allowing the TCP/IP stack to be integrated into Wi-Fi systems operating at 2.4 GHz with data rates of up to 11 Mbit/s. The initial release supports the Intersil Prism 2.5 wireless MAC. The driver can be used in infrastructure mode (using an access point) or in 'ad hoc' mode (without an access point.)

CMX-MicroNet(TM) is a TCP/IP software stack that provides low-cost Internet access for a wide range of embedded microprocessors. Unlike other Internet-enabling solutions, it allows TCP/IP and other protocols to be run directly on the embedded processor without the need for proprietary protocols, gateways, or additional hardware.

CMX-MicroNet provides direct serial links, PPP based modem communications, Ethernet or 802.11b drivers. A web server application that runs on the micro can use any of these to talk to a normal PC-based browser using the HTTP protocol. The user can then set values on the micro, cause functions to be executed and read back variables displayed by the browser. In this way, full access to the micro is provided via the browser's familiar Windows graphical user interface.

-  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: BDM and JTAG interfaced debuggers, In-circuit emulators , EPROM emulators USB, Ethernet, RS232 & CAN analysers and device programmers. Software tools include: assemblers, debuggers, compilers, real-time executives, TCP/IP stacks and other high-level protocol libraries.

With 25 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: 077 4342 2526

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

For more information on MicroNet :

         CMX-MicroNet             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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