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johnorun
Joined: 04 Apr 2008
Posts: 2681
Location: Chicago, IL- US
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 Posted: Sun Sep 12, 2010 9:32 pm Post subject: |
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I finally got around to opening and cleaning up some old PC's and I found two interesting chips.
The aluminum IBM chip has gold legs and is in a socket inside an IBM PS/2, Model 70-386. Is this the 386 CPU in a proprietary package? It's marked 51F1784 and INTEL 85.
The DX2OPD66 is inside an IBM tower PS/1 with both the plastic 486SX-33 and this Overdrive chip in the O-Drive socket. Is SZ933 a scarce S-spec?
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Neon
Joined: 04 Feb 2008
Posts: 876
Location: Dallas, Texas, USA
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| Posted: Sun Sep 12, 2010 10:56 pm Post subject: |
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I don't have any answers, but love the zany font on the 51F1784 chip.  |
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Elar
Joined: 16 Jul 2003
Posts: 641
Location: Tallinn, Estonia
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johnorun
Joined: 04 Apr 2008
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Location: Chicago, IL- US
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g0b
Joined: 18 Jul 2006
Posts: 759
Location: France
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| Posted: Mon Sep 13, 2010 5:13 am Post subject: |
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| johnorun wrote: | Is SZ933 a scarce S-spec?
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Not too common, but not really rare either
g0b
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johnorun
Joined: 04 Apr 2008
Posts: 2681
Location: Chicago, IL- US
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| Posted: Fri Sep 17, 2010 10:25 pm Post subject: |
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Well it's a beautiful Friday night here and I just received these new chips fresh from the Australian Outback,,, well, at least from Australia.. 
The Intel 486SX-20 is my first 20-speed 486 and the AMD K6-2/550 is my fastest speed K6.
(VCF-Midwest starts tomorrow.)
Cheers, everyone!
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johnorun
Joined: 04 Apr 2008
Posts: 2681
Location: Chicago, IL- US
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| Posted: Mon Sep 20, 2010 10:43 pm Post subject: |
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This weekend's Vintage Computer Festival-Midwest near Chicago was a great time and three members of CPU-World were present--FDIV, Tlccomp and me.
Chips that FDIV and I displayed got us involved in answering a lot of questions about chips and why people collect them.
There were attendees from the US East & West coasts, Canada and Mexico, so the event was a success.
Here are some recent finds and the SAB 8086-2-C and IBM Aluminum 386DX-20 were not from the fair. I love the Intel C8085AH-2 
The Xeon SLG9M is fairly recent (2007). What type is it?
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johnorun
Joined: 04 Apr 2008
Posts: 2681
Location: Chicago, IL- US
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| Posted: Sun Oct 17, 2010 11:30 pm Post subject: |
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Here are my latest finds from the last week.
An assortment of modern Pentium III's, P4"s, Zeons, AMD Athlons waiting to be cleaned and a classic Pentium-90 Gold top . (spares for sale)
Upper left is a Motorola XPC7400, RX450PH from an APPLE (1999)
The small chips are HP HDSP-2300 smart 5x7 dot matrix LED displays.
(Spares for sale)
Large beautiful rare AT&T gold circuit chips. I removed the grey silicone layer to expose the gold circuits. (spares for sale)
Eproms and two large dips from Microwave oven circuit board (LG and Goldstar).
Also Signetics P87C52EBPN 16MHz 8k OTP 8051
AMD D87C521 12MHz 8k EPROM 8051
AMD P87C5212-1. (spares for sale)
My first MHS D-8086-2 CPU. Made in France.
Any info. on this?
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CPUShack
Joined: 16 Jun 2003
Posts: 12840
Location: State of Jefferson, USA
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| Posted: Sun Oct 17, 2010 11:45 pm Post subject: |
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MHS aka Matra Harris Semiconductors SA was created in 1979 as a joint venture between Matra, the French high technology group, and Harris Semiconductor.
Thus making 8086s
They were renamed Temic, and bought by Atmel.
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johnorun
Joined: 04 Apr 2008
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Location: Chicago, IL- US
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CPUShack
Joined: 16 Jun 2003
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Location: State of Jefferson, USA
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johnorun
Joined: 04 Apr 2008
Posts: 2681
Location: Chicago, IL- US
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| Posted: Tue Dec 07, 2010 12:25 am Post subject: |
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Hmm.. Does anyone know why some of my pics above were deleted (403-Forbidden)! Is this some sort of ImageShack issue or ??
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CPUShack
Joined: 16 Jun 2003
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johnorun
Joined: 04 Apr 2008
Posts: 2681
Location: Chicago, IL- US
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| Posted: Tue Dec 07, 2010 12:55 am Post subject: |
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I made a nice haul of chips, several old boards and an old MFM Seagate 20MB hard drive this weekend. (Click on the thumbnails to enlarge.)
Lots of different S-specs.
This white IBM chip is an APPLE CPU with a large heatsink attached
These chips are on a large Mitsubishi Motherboard. Any idea what machine it's from?
N80286-8 on a TANDY Motherboard from 1987. Anyone know what this is from?
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Last edited by johnorun on Tue Dec 07, 2010 3:11 am; edited 2 times in total |
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Neon_WA
Joined: 08 Nov 2008
Posts: 6468
Location: Perth, West Australia
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| Posted: Tue Dec 07, 2010 1:01 am Post subject: |
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| johnorun wrote: | | N80286-8 on a TANDY Motherboard from 1987. Anyone know what this is from? |
Tandy 1000... TX model most likely
the 286 CLCC board.. if you are looking to sell.. I know Marcin is wanting one
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