Hi all I've just started using Keil C51. The first thing I did was to try an compile an example which I already had its hex file(this was compiled by Keil as well). the problem is that when I comiled the source code using Keil it compiled and linked fined and generated a hex file, however, this hex file is not working as expected ... I made sure that I am using the right device and the right configuration. can anybody help? Thanks
"this is really Disappointing for a beginner like me." Note that the free Evaluation version is provided for precisely that purpose - for software developers who wish to Evaluate the suitability of the tools to their project. It is not just a freebie for all comers! It is not a free 8051 programming course! "If I can't compile this samll program whith few lines of code..." You can compile a small program! However, you may not be able to run it in some devices - particularly single-chip variants - as clearly described in the limitations page. You can still run in the Simulator, though. As I keep saying, the first thing you should do - especially as a novice - is to read the uVision Getting Started Guide and work through the example projects in it. It's included on the free CD and in the free download. This will give you a proper introduction to the tools - rather than just blindly jumping into the deep end!