The interface presented here is for download only. You need to use a far more complex circuit to allow upload (i.e. programming your Aladin)
This is the logical diagram of the circuit (sorry I never got formal electronics training, so that is probably the wrong nomenclature)
The components diagrammed in, those of you with access to PCB etching could possibly work some magic from this.
The circuit transferred to a small bit of verro board. It's perhaps not the best possible track use, but its none the less compact, and it works.
This design is said to only work with the DOS Uwatec software, or the shareware WLog.
The designs presented here worked for me, but I cannot take any responsibility for the results of you following these instructions. I do not accept responsibility for the correct function of the interface or any damage caused by its use or construction.