Most of us have seen photos of a silicon chip die, usually magnified. In many of those chips, specially the large ones, the several logic areas are visible by naked eye. In this instructable I am showing you the steps to open-up an i486 DX2-66 CPU and inspect the contents! It's a rather large (and slow for these days :-) ) silicon chip. It's a very easy task, as soon as you are patient and gentle, because the contents are a bit fragile!
Step 1: What You Will Need
2) A hammer (not a very heavy one!)
3) A chisel with sharp edge
Step 2: Prepare for the Job
Then, position the edge of the chisel exactly at the point where the metal cover meets the underneath of the ceramic CPU packaging. You have to maintain an angle smaller than 45 degrees, (smaller than shown in the photo), in order to avoid breaking the CPU packaging. You may have to bend the pins in order to position the chisel to a small angle.
Step 3: Removing the Metal Cover
Step 4: Result
I know there are plenty of similar photos on the net, clear and magnified, but I think it is very interesting to be able to inspect such a circuit in person. You can even distinguish the anaglyph nature of the silicon wafer just by using a simple magnifying glass! I have some microscope lenses which I plan to use in order to see some more detail, and maybe get some better photos.
If you have already done, or you do something similar, I would love to see some photos!