CPU-World logo News · Chips · Information · Forum · Links · About Contact Us
FAQ · Memberlist · Usergroups · Profile · Private Messages · Log in · Register Search
What Chip is this?

Post new topic   Reply to topic    CPU-World.com forums Forum Index -> Vintage Chips
View previous topic :: View next topic  
Author Message
Aterdan



Joined: 16 Dec 2009
Posts: 1
PostPosted: Wed Dec 16, 2009 1:55 pm    Post subject: What Chip is this? Reply with quote
I recently found this chip and have been serching all over ther internet to figure out what it is. Can you guys help me out?

Pins: 147 (aprox)

On the silver front cover it says
51F1797ESD
IBM 9314
(c) INTEL85
19125003CR

It has gold pins and a green backing that the pins attach to. Please help casue I hate a mystery. Evil or Very Mad

Thanks,
Aterdan
Back to top
View user's profile Send private message  
Windmiller



Joined: 24 Jun 2005
Posts: 1716
Location: Chapel Hill, NC
PostPosted: Wed Dec 16, 2009 2:26 pm    Post subject: Re: What Chip is this? Reply with quote
It's a IBM 386, here is that is similar.

http://www.chipdb.org/img-ibm-386-51f1784esd-_dx-20_-2865.htm
Back to top
View user's profile Send private message [ Hidden ]
Neon



Joined: 04 Feb 2008
Posts: 1512
Location: Dallas, Texas, USA
PostPosted: Wed Dec 16, 2009 4:29 pm    Post subject: Reply with quote
By the way, what is the significance of IBM9314 ?

Since this appears on many IBM chips, it is obviously not a date code.
Back to top
View user's profile Send private message [ Hidden ]
andamus



Joined: 06 Dec 2004
Posts: 1029
PostPosted: Wed Dec 16, 2009 6:00 pm    Post subject: Reply with quote
Maybe fundry plant code?
Back to top
View user's profile Send private message  
UMMR



Joined: 23 Aug 2007
Posts: 381
Location: Udine, ITALY
PostPosted: Thu Dec 17, 2009 4:19 am    Post subject: Reply with quote
andamus wrote:
Maybe fundry plant code?


Hi,
IMHO you're right.
It's only my opinion, nothing found online nor in books.
The meaning of these codes is a mystery for many IBM collectors (like me).
I know at least 7 common codes: IBM14, IBM22, IBM52, IBM5352, IBM7070, IBM9314, IBM98. Based upon my personal experience: many vintage (70s, 80s) IBM MST (Monolythic System Technology, integrated circuits in IBM aluminium packages) are IBM52. "Dutchess" logic chips (an early IBM form of gate array ASICs) are either IBM5352 and IBM22. IBM9314 are frequently marked "ESD": "Electrostatic Sensitive Device"? I guess they are CMOS chips. It's only a speculation. But I think these codes are IBM plant identification codes, since there are examples of IBM plant identification done with 2-digit codes (System i serial numbers, AS/400 serials etc.)
Paolo
Back to top
View user's profile Send private message   Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    CPU-World.com forums Forum Index -> Vintage Chips All times are GMT - 5 Hours
Page 1 of 1
Jump to:  
You can post new topics in this forum
You can reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Powered by phpBB © 2001 phpBB Group