Hi Richard,

There is a tool that can catch these problems that you just bumped into and it’s free. It is called a disassembler. A good one is D51.exe. It's probably on this web site.

A good practice when you program is to run you code thru the dissembler as standard procedure and look it over. Guaranteed it will catch most of the errors you make. Most of them stand out so clear you kick your self for making them.

Regards,

Charles Bannister