At first, I tried soldering 0.25mm wire wrap wires onto the OSC1 and RESET pins on the micro-controller. However, the tip of my soldering iron was far too big (and blunt) for the job, allowing me to accidentally solder the tops first three pins together!
What a mess that was! I spent half an hour scraping it away with the tip of a 1.8mm slotted (flat head) screw driver. Afterwards, I ensured that that the pins were once again unconnected, independent, and free using my trusty continuity tester.
With that soldering lesson well learned, I proceeded to try a different approach: I would literally tie wires onto the pins (see photo above). This was tricky.
I stripped off some insulation from each wire and bent the underlying metal into a crude “U” shaped hook. After much persistence (though mostly luck, it seemed) I was able to loop each wire around its corresponding pin. Then it was just a matter of twisting the excess length of metal around the insulation. Et viola! A metal knot. :-)
Finally, I secured the wires using masking tape so that they don’t move around and accidentally cause the knots to touch the neighboring microcontroller pins.
Now I need to solder 0.60mm wires to the remaining connection points and try to read the micro-controller’s flash EEPROM.
Initially, I thought I would have to install Windows XP on my computer (groan!) just to use the ICS08JBZ programmer software to communicate with my MON08 programmer circuit. But luckily, I found an excellent open source tool called monitor- 68HC08 written by DEMAINE Benoît-Pierre which does the job. This tool’s source code will come in handy if I end up having to crack the microcontroller’s security code by brute force.