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Qwerty
Joined: 20 May 2005
Posts: 3141
Location: Germany
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 Posted: Thu Nov 30, 2006 5:22 pm Post subject: NexGen Nx587, Nat. Semiconductor NS486SXL-25 ES and others. |
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Hi !
It's almost Xmas time 
Therefore I decided to list some quite rare CPUs on eBay.
Starting prices are as low as usual - only EUR 1.99
Don't miss your chance !
http://search.ebay.com/_W0QQsassZqwerty998QQhtZ-1QQfrppZ200QQfsopZ2QQfsooZ2QQrdZ0?
- Siemens SAB 8086-1-C - purple ceramic, goldcap
- Siemens SAB 8086-2C - purple ceramic, goldcap
- Texas Instruments TMS9900JDL - purple ceramic
- NexGen Nx587 FPU
- NEC D8085AHD-2 - plain grey ceramic
- AMD AM486DX5-133V16BHC
- National Semiconductor NS486SXL-25 ES !
- AMD AM9080-ADC / C8080A - purple ceramic, goldcap
- AMD AM9080A-1DC / C8080A-1 - purple ceramic, goldcap
- Intel Pentium I MMX 266 MHz Socket 7
I accept PayPal and will ship worldwide. I will combine shipping costs.
Thanks for looking,
Qwerty
A small overview -
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debs3759
Joined: 18 Jan 2006
Posts: 9477
Location: Northampton, Divided Kingdom
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| Posted: Sat Dec 02, 2006 9:18 am Post subject: |
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The NS486SXL is an "Optimized 32-Bit 486-Class Controllers with On-Chip Peripherals for Embedded Systems" - that was taken from the datasheet.
I don't think it is ES. The SXF that we had a group buy of earlier this year had lot codes that started with ES as well, and are dated about a year later.
I agree that they are uncommon, but they were sold as Microcoontrollers, not Microprocessors (the info on http://www.ukcpu.net/Collection/Processors/National/486.asp is taken from the product datasheet (I forget where I downloaded it from, but I have a copy for anyone that needs it...)
If you have documentation that proves it to be ES, please let me see a copy (scan or some other method), so I can update the info on my site (I've not yet seen another site with info on this controller)...
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Qwerty
Joined: 20 May 2005
Posts: 3141
Location: Germany
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| Posted: Sat Dec 02, 2006 10:56 am Post subject: |
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Hi Debs,
| debs3759 wrote: | | The NS486SXL is an "Optimized 32-Bit 486-Class Controllers with On-Chip Peripherals for Embedded Systems" - that was taken from the datasheet. |
There are two eternal questions - "What is a CPU and what is a MCU ?" and "What is the difference between CPU and MCU ?" 
Is a 80186 chip a microprocessor or a microcontroller ?
Some datasheets describe a 80186 as a microcontroller and there are other datasheets that describe it as a microprocessor.
Are the 386EX chips (Intel KU386EX**) CPUs or MCUs ?
The NS486SXL belongs to x86 family. I think both descriptions are correct !
| debs3759 wrote: |
I don't think it is ES. The SXF that we had a group buy of earlier this year had lot codes that started with ES as well, and are dated about a year later.
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I couldn't find any information about this chip, that's why I looked for similar chips on the collector's websites.
I found the similar chips in 3 different collections.
http://www.cpushack.net/chippics/NationalSemi/
http://www.abc-cpu.com/ ........... go to Collection -> National Semiconductor -> 486
http://cpu-sammlung.de/collection.html#National
All three collectors described the chip as an engineering sample !
Sure, the chips from the groupbuy are dated about a year later, but it's a different type of chip (NS486SXF-25). I compared the datasheets and I think that NS486SXF is a NS486SXL with additional integrated peripherals. It's logical to assume that NS486SXF was developed after the NS486SXL.
| debs3759 wrote: |
If you have documentation that proves it to be ES, please let me see a copy.
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Unfortunately I don't have the documentation that proves this fact.  I would really appreciate to get it.
Do such documentation exist ? Do you have a proof that Intel D8080 ES is an Engineering Sample ??? I have an official Intel MCS-80/85 Family User's Manual (about 400 pages) and there is no information about ES in it !
I don't have a other proof that it is an ES chip. And you don't have a proof that it isn't an ES chip too.
The most x86 CPUs with "ES" on them are Engineering Samples ! I know only one exception from this rule - "MALAY ES" Pentium I.
I fear there is only one way to find the truth - to ask an engineer from National Semiconductor. |
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debs3759
Joined: 18 Jan 2006
Posts: 9477
Location: Northampton, Divided Kingdom
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| Posted: Mon Dec 04, 2006 9:43 am Post subject: |
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I wasn't suggesting that it is not a CPU, as to me any MCU, Microprocessor, BSP, etc is a CPU, as it is the heart of a computer unti I was merely hoping that if you had not got the datasheet you might ahve appreciated the info that came from it. After all, that does affect who bids sometimes...
On the subject of ES or not ES, I would say that in an ES chip the ES (or whatever a chip might ahve on it) is not usually (or ever, in my experience, but I know there is a lot I have yet to learn...) part of the data code. There would normally be a gap, which is why I am doubtful that it is ES.
| Quote: | | Sure, the chips from the groupbuy are dated about a year later, but it's a different type of chip (NS486SXF-25). I compared the datasheets and I think that NS486SXF is a NS486SXL with additional integrated peripherals. It's logical to assume that NS486SXF was developed after the NS486SXL. |
If you check the datasheet, you will see that for the SXL, it actually says:
| Quote: | | Programming model compatible with the NS486SXF where possible |
This is quoted on the page I linked to above, and taken directly from the datasheets, so the SXL MUST have been produced after the SXF (otherwise it is a bit strange for a chip to be described as compatible with one that had not yet been produced...).
This also implies that, unless they had a sample run of well over a year without ever going into production, the ES at the start of the datacode on the SXF is just that, two letters, not an ES designation.
I'm not trying to be funny by saying all that, just trying to use some logic to show why they are probably NOT ES chips.
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My graphics card database can be found at http://www.gpuzoo.com.
I can resist anything except temptation.
Debs |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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| Posted: Mon Dec 04, 2006 12:35 pm Post subject: |
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| Quote: | This is quoted on the page I linked to above, and taken directly from the datasheets, so the SXL MUST have been produced after the SXF (otherwise it is a bit strange for a chip to be described as compatible with one that had not yet been produced...).
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No it simply means the datasheet was revised.
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debs3759
Joined: 18 Jan 2006
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Location: Northampton, Divided Kingdom
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| Posted: Wed Dec 06, 2006 8:59 am Post subject: |
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We'll have to agree to disagree on this I've just bid though, as whatever I think about whether it is ES or not, I want one
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My graphics card database can be found at http://www.gpuzoo.com.
I can resist anything except temptation.
Debs |
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Qwerty
Joined: 20 May 2005
Posts: 3141
Location: Germany
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| Posted: Thu Dec 07, 2006 5:30 pm Post subject: |
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There are so many nice and rare chips offered on this forum and on eBay.
I think, I am not the only one collector who spent (will spend) more money than intented this month. 
That's why I decided to offer an additional service - If you're low on money this month - I can wait with payment till January.
If you purchase something from me and wish to pay later - please send me an email after the end of the auction. The coins will not run away !
But you'll get the chips after I get the money !  |
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Qwerty
Joined: 20 May 2005
Posts: 3141
Location: Germany
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| Posted: Sat Dec 09, 2006 1:21 pm Post subject: |
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| One day left ! |
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Marcin
Joined: 02 Jan 2005
Posts: 8519
Location: Poland
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Qwerty
Joined: 20 May 2005
Posts: 3141
Location: Germany
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| Posted: Sun Dec 10, 2006 4:27 pm Post subject: |
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| Marcin wrote: | | For how much went Nexgen 587 ? I was on pizza and miss end of auctions |
The NexGen 587 went for EUR 102.00 ! 
And the NS486SXL-25 ES went for only EUR 15.50
It's eBay !!! |
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g0b
Joined: 18 Jul 2006
Posts: 1385
Location: France
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| Posted: Sun Dec 10, 2006 4:28 pm Post subject: |
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102 Eur.
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Mixeur
Joined: 06 Jan 2005
Posts: 4038
Location: Sochaux, France
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g0b
Joined: 18 Jul 2006
Posts: 1385
Location: France
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| Posted: Sun Dec 10, 2006 4:30 pm Post subject: |
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| Mixeur wrote: | for a very very good price :
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From the buyer or the seller point of view ?
g0b
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Mixeur
Joined: 06 Jan 2005
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Marcin
Joined: 02 Jan 2005
Posts: 8519
Location: Poland
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| Posted: Mon Dec 11, 2006 1:39 am Post subject: |
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oooooveeeeeerpriced Congrats for seller
This Nexgen was available to buy for 30 or 40 USD in many pieces some time ago
But it is good to hear that some chips have higher value.
BTW. For NS ES chip was good price too !
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