The datastream has not been read yet, just the theory from the vast reading I have amassed. The comment about Excel was the chips had been read via a programmer, disassembled into Assembly Code. These were then compared for the various parameters, maps, triggers etc etc. I was going to use VB but found it very quick in Excel (+ I have hours of spare time at work with Excel and no access to VB!!!).

Anyway, hardware is designed and simulator is built, just needs more coding. This allows me to simulate the finished item on a PC screen as though it were a standalone unit.

Question, would data-logging be a good feature? Don't really want to make things too complicated at this time but it's just a thought.

Graham