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Bator
Joined: 28 Oct 2013
Posts: 1285
Location: Russia / Yakutia & Siberia
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 Posted: Wed Jan 15, 2014 12:03 pm Post subject: Intel C8080B |
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I have Intel C8080B.
What is in the designation ES? Engineering sample? |
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Twinrocket
Joined: 04 Apr 2012
Posts: 558
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| Posted: Wed Jan 15, 2014 1:36 pm Post subject: Re: Intel C8080B |
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| Bator wrote: | I have Intel C8080B.
What is in the designation ES? Engineering sample? |
Check this Link:
http://www.cpu-world.com/forum/viewtopic.php?t=19272
It has a datecode of 7428 = Made in 1974 Week 28
Last edited by Twinrocket on Wed Jan 15, 2014 5:18 pm; edited 2 times in total |
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frag_
Joined: 17 Nov 2008
Posts: 4015
Location: Estonia
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| Posted: Wed Jan 15, 2014 1:40 pm Post subject: |
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No, it's not.
Wait for Neon_WA  |
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smithy
Joined: 27 Apr 2008
Posts: 2906
Location: Sydney, Australia
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| Posted: Wed Jan 15, 2014 5:39 pm Post subject: |
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Nice chip, but not ES
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My former Intel collection:
www.smithschips.com.au |
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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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| Posted: Wed Jan 15, 2014 7:13 pm Post subject: |
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| frag_ wrote: | No, it's not.
Wait for Neon_WA |
Don't have to wait for me 
The ES marking on the C8080B I believe is just co-incidence, especially as this type of marking was only found on the very last of the 8080Bs.
I suspect the 0000X, Xx000 & ESx000 markiings are some internal Intel code, maybe wafer number.
But when you look at the initial production on 8080s you could consider it to be a sample of some sort
The first production 8080 released was the C8080, so therefore everything before is a sample of some type
The first die rev I suspect has never been seen & never left Intel
8080s marked 8080 I suspect are actually 2nd die rev (sames as 8080B & C8080B)
Why I think that is Intel don't produce a product in 2 die revs using the same code/lot number. There is a 8080 & 8080B both with the 1253X code mark
Next came the C8080C (3rd die rev) which was adopted as the production die rev and was marked as C8080 for release
On a side issue when it was realised that was C8080 was flawed and produced a 4th die rev they initially marked them as C8080-8 and eventually decided upon C8080A
So to condense it
1st die rev >> probably never seen, possible some of the 8080 are 1st rev
2nd die rev >> 8080, 8080B, C8080B
3rd die rev >> C8080C, C8080 (this also includes 8080s marked with S-1283 stepping **)
4th die rev >> C8080-8, C8080A
Everything I would consider a sample (no matter on exact markings) I have marked in blue
** These units had their part number remarked, likely done by the OEM
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Bator
Joined: 28 Oct 2013
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Location: Russia / Yakutia & Siberia
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| Posted: Wed Jan 15, 2014 7:41 pm Post subject: |
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| Thank you all for your answers |
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