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johnorun
Joined: 04 Apr 2008
Posts: 3364
Location: Chicago, IL- US
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 Posted: Wed May 21, 2014 10:12 pm Post subject: What's on this scrap board? |
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I just bought this board as a scrap lot hoping it has some good chips in the sockets.
Can anyone guess what the white Intel chips might be on this out of focus picture?
I'll post a clear picture of the board once I receive it in a few days.
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Robev
Joined: 10 Mar 2006
Posts: 3693
Location: New Zealand
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| Posted: Wed May 21, 2014 10:37 pm Post subject: |
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C4004
C4008
C4009
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gshv
Joined: 01 Feb 2003
Posts: 7898
Location: Fairfax, VA USA
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| Posted: Wed May 21, 2014 10:51 pm Post subject: |
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| Robev wrote: | C4004
C4008
C4009 |
That's what I thought too.
Gennadiy |
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johnorun
Joined: 04 Apr 2008
Posts: 3364
Location: Chicago, IL- US
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| Posted: Wed May 21, 2014 10:52 pm Post subject: |
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| Robev wrote: | C4004
C4008
C4009 |
That was my hope, but I didn't see any 4001 or 4002's so I wasn't sure.
I can't believe my luck if you're right!!!  
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Twinrocket
Joined: 04 Apr 2012
Posts: 558
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| Posted: Thu May 22, 2014 5:19 am Post subject: |
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| johnorun wrote: | | Robev wrote: | C4004
C4008
C4009 |
That was my hope, but I didn't see any 4001 or 4002's so I wasn't sure.
I can't believe my luck if you're right!!! |
Wow congratulation! Looking forward to see better pictures of the chips.
But didn't the need for 4001's (Metal Mask Rom's = had to be made by Intel) go away with the use of the interface chips 4008/4009 using (user Programmable) EPROM's instead? |
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johnorun
Joined: 04 Apr 2008
Posts: 3364
Location: Chicago, IL- US
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| Posted: Fri Jun 06, 2014 7:25 pm Post subject: |
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The Mystery Board Finally arrived today 17 days after I bought it and you guys were correct-
It has a C4004, C4008 & C4009 in sockets as well as a daughterboard on the bottom with RAM and B1702A EPROMs.
I'm thrilled to finally get a C4004 white after all the suspense of the wait and uncertainty.
The board is from a 2200 Series of WANG computer from the 1970's.
NOTE: The bad news...I just noticed that one leg on the C4008 is broken and others have rust. I'm going to spray some WD-40 solvent on all the chips' legs and try to remove them from the sockets, before the corrosion gets worse.
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Last edited by johnorun on Fri Jun 06, 2014 8:43 pm; edited 1 time in total |
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Robev
Joined: 10 Mar 2006
Posts: 3693
Location: New Zealand
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| Posted: Fri Jun 06, 2014 7:50 pm Post subject: |
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nice find......What was the cost?
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johnorun
Joined: 04 Apr 2008
Posts: 3364
Location: Chicago, IL- US
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| Posted: Fri Jun 06, 2014 8:45 pm Post subject: |
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| Robev wrote: | | nice find......What was the cost? |
I cost me $60 for the risk. Well worth it now that I see that the chips are what I was hoping for. 
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xsecret
Joined: 01 Feb 2004
Posts: 1847
Location: France
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debs3759
Joined: 18 Jan 2006
Posts: 9477
Location: Northampton, Divided Kingdom
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| Posted: Fri Jun 06, 2014 9:13 pm Post subject: |
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Very nice! Lucky find 
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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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johnorun
Joined: 04 Apr 2008
Posts: 3364
Location: Chicago, IL- US
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| Posted: Fri Jun 06, 2014 11:06 pm Post subject: |
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| debs3759 wrote: | | Very nice! Lucky find |
I was surprised to trip across this find in it's original board 43 years after the 4004 was introduced. It means that the "thrill of the hunt" is still there for everyone that is looking for a rare chip.
I removed the C4004 from the socket and it's dated "7549" on the bottom.
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Robev
Joined: 10 Mar 2006
Posts: 3693
Location: New Zealand
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| Posted: Fri Jun 06, 2014 11:56 pm Post subject: |
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And you got it for a bargain of the year price I would say so very very well done and yes the thrill of the chase is still there for us all 
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The CPU Hunter
Joined: 25 Nov 2010
Posts: 2218
Location: Netherlands
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| Posted: Sat Jun 07, 2014 1:31 am Post subject: |
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| Very nice find |
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