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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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 Posted: Wed Nov 18, 2009 2:21 am Post subject: eprom manufacturers |
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I decided to start a thread for manufacturers of eproms i or anyone else havent come across before 
First cab off the rank is S-MOS Systems
unknown when started (circa 1982 most likely)
partially owned affiliate of Seiko Epson
then fully acquired by Seiko Epson in 1997
operating now as Epson Electronics America Inc
notable info.. S-MOS Systems developed the first commercially available single chip 3D geometry accelerator (SPC1500) for PCs.
here is a pic of one of their eproms showing the logo
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http://www.x86-guide.net/Neon-WA/en/collection.html
Last edited by Neon_WA on Wed Nov 18, 2009 2:52 am; edited 1 time in total |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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| Posted: Wed Dec 02, 2009 12:08 am Post subject: |
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This one is easy to work out who made it 
But i dont beleive many would think of RICOH for eproms.
RICOH claim on their website that they | Quote: | | Start selling the world's first 32k CMOS EPROM in 1982 |
I know CPUShack has a RICOH RD27C32.. has anyone else come across other RICOH parts
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There are 10 types of people in this world:
those who understand binary and those who don't. ~Author Unknown
http://www.x86-guide.net/Neon-WA/en/collection.html |
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hugo929
Joined: 27 Oct 2006
Posts: 6163
Location: China
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jrmunro
Joined: 01 Feb 2003
Posts: 3149
Location: Vancouver, Canada
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| Posted: Wed Dec 02, 2009 1:08 am Post subject: |
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I have two 6502`s made by Ricoh.
 [/url]
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CPUShack
Joined: 16 Jun 2003
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Location: State of Jefferson, USA
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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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| Posted: Wed Dec 02, 2009 1:09 am Post subject: |
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Very nice 
| hugo929 wrote: | | Ricoh made 6502 |
Yes you are quite correct Hugo..
i will rephase the question for others.. was meaning other eProm parts
_________________
There are 10 types of people in this world:
those who understand binary and those who don't. ~Author Unknown
http://www.x86-guide.net/Neon-WA/en/collection.html
Last edited by Neon_WA on Wed Dec 02, 2009 1:11 am; edited 1 time in total |
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jrmunro
Joined: 01 Feb 2003
Posts: 3149
Location: Vancouver, Canada
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| Posted: Wed Dec 02, 2009 1:10 am Post subject: |
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| Sorry I misunderstood |
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CPUShack
Joined: 16 Jun 2003
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Location: State of Jefferson, USA
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doccybrown
Joined: 03 Oct 2005
Posts: 1736
Location: Germany
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| Posted: Wed Dec 02, 2009 3:23 am Post subject: |
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Obscurest 'manufacturer' I could find is SEG.
This Eprom was obviously made by Fujitsu... |
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doccybrown
Joined: 03 Oct 2005
Posts: 1736
Location: Germany
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| Posted: Wed Dec 02, 2009 3:25 am Post subject: |
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Haha: Seiko Epson Group (SEG)?
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smithy
Joined: 27 Apr 2008
Posts: 2906
Location: Sydney, Australia
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| Posted: Wed Dec 02, 2009 6:42 am Post subject: |
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| any ideas on these babies? |
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andamus
Joined: 06 Dec 2004
Posts: 1029
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| Posted: Wed Dec 02, 2009 6:45 am Post subject: |
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Hi,
seems to be Signetics (top one) and Texas Instruments (bottom one) |
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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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| Posted: Wed Dec 02, 2009 7:24 am Post subject: |
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yes the top one looks like Signetics 
the bottom one is a Thomson-CSF part number.. but the logo isnt..
The Thomson-CSF logo looks like the Star Trek emblem
but i have seen the logo b4.. so will find it tomorrow 
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There are 10 types of people in this world:
those who understand binary and those who don't. ~Author Unknown
http://www.x86-guide.net/Neon-WA/en/collection.html |
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Chiefish
Joined: 23 Sep 2007
Posts: 2153
Location: Northwest N.J. U.S.A
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| Posted: Wed Dec 02, 2009 8:01 am Post subject: |
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Heres one by Maxtor, only one ive ever seen so far. I guess they might have used them in the old hard drives. Print is on bottom saying Maxtor and also on the core when I looked under microscope.
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