CPU Shack: HP Nanoprocessors - SOLD OUT

[CPUShack]

Here are some nice ones

HP Nanoprocessors. The Nanoprocessor is an original HP 8-bit design, made in NMOS (their original NMOS process) running at up to 4MHz (or 8MHz for the 1692 variant)

SOLD A 1820-1691 White, clean $25
SOLD B 1820-1691 White Clean $25
SOLD C 1820-1691 white, missing a pin $10
SOLD D 1820-1691 white, desolder, $15
SOLD E 1820-1692 (8MHz) Purple, clean $20

[edwardauskis]

A,E for me

[edwardauskis]

B,E sorry

[tunder10]

d for me, thanks

[Vegeta]

A 1820-1691 White, clean $25

[CPUShack]

one with missing pins is left, make an offer if ya want it

[mister_rf]

My offer is not so high, I'll try to take a die picture of it.
Is $5 OK?

[CPUShack]

sure

[mister_rf]

Muito obrigado.

[Birdman.]

I already have an opened one https://commons.wikimedia.org/wiki/File:HP_Nanoprocessor_die.JPG, so maybe I could send that one for die shot together with many other opened chips.

[mister_rf]

Well, I wasn’t aware about the previous die shoots. Basically I don’t want to waste/destroy it just for fun. You have a great idea, and some details needs to be considered in order to implement it.
I’ll need to repeat that I have joined this forum group as I like to take die shots of various chips, but my setup is very simple, I use a Canon EOS 5D and the MP-E 65mm macro lens. Now, I’m not really prepared for a perfect mechanical setup in order to squeeze all the performance from that lens, but I will try to do my best in the future.
IMHO that particular die shot can be improved by my actual setup.
All I need is some time and more accurate preparation.

[Birdman.]

This die is among the smallest ones I've photographed and it's too small for my setup. I lose sharpness with zoom of scope maxed out, and in this case die still doesn't fill whole pic. Maybe I could get a bit sharper pic with less cromatic aberration by trying again because some small dies have been better. However, I don't like trying again because it may fail due to some dirt on die or not as nice illumination.

Can you take good pics of about 5 mm wide or smaller dies with your lens?

[edwardauskis]

Sorry, but I cancel my order.
E 1820-1692 (8MHz) Purple, clean $20 resell to Vegeta
Maybe who want :
B 1820-1691 White Clean $25 ?

[Vegeta]

yup! I take it, thanks!
E 1820-1692 (8MHz) Purple, clean $20

[Marcin]

I will take B 1820-1691 White Clean $25 then