Saturn processor die-shot

[Paul Berger (Canada)]

(03-07-2022 05:34 PM)Gene Dorr Wrote:  A few months ago I finally got an HP-71B in terrible condition (I could never bring myself to do this to a working HP-71B), and took it apart to make photos of the guts similar to the ones in the July 1984 HP Journal. I've always been enamored of the Saturn processor, so I commissioned John McMaster to make a die shot of it. This is not the original 1LF2, but the second iteration 1LK7.

Here's the shot : https://siliconpr0n.org/archive/doku.php...:1lk7-0001

Enjoy!

Gene

What equipment was used to make the die shot? I have photographed chip dies using a camera with bellows and a microscope objective for a lens I have managed to achieve high magnification, filling a frame with a small area on a die, but lighting is tricky as is setting up you need to get the axis of the lens perpendicular to the die as depth of field is non-existent at that kind of magnification and if not perpendicular you cannot get the whole frame in focus.

Paul.