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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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 Posted: Wed Feb 09, 2011 6:52 pm Post subject: 3 x Toshiba TMM121-1 |
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I have 3 of Toshiba's first produced e-prom ( TMM121-1 ) available for trade or sale (they are presently sitting at AVICC)
Toshiba first produced e-proms in the middle of 1974 for use in their TLCS-12A (T3190) computer. In the following years they incorporated them into other electronic driven equipment.
These particular e-proms had more humble beginnings in a paper tape driven CNC produced by Toshiba.
While the TMM121 is the same capacity as Intel's 1702, the organisation is 512k x 4 as compared to the 1702 of 256k x 8
Two of the e-proms pictured are not available, as they were used to complete existing on-going trades.
My preference is for trade, but they will be available for sale at $26
I commissioned the services of AVICC CPU Cleaning Inc to do the initial cleaning of the e-proms, but further careful cleaning with remove marks still present.
I have my screen set quite dark at work, so here is a second darker pic for people with brighter set screens
At the top on my list for trade is Microsystems International eproms, but the trade does not need to be limited to white ceramic eproms
It can be made up of a couple of eproms in other packages
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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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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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Chiefish
Joined: 23 Sep 2007
Posts: 2153
Location: Northwest N.J. U.S.A
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| Posted: Wed Feb 09, 2011 8:42 pm Post subject: |
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I knew that these are very early Eproms , but I didnt know they were Toshibas first . 
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"The only reason for time is so that everything doesn't happen at once." A.E. |
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magictom
Joined: 14 May 2009
Posts: 2281
Location: Hawaii
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| Posted: Wed Feb 09, 2011 9:22 pm Post subject: |
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| Yeah, the round lids are extra cool ! |
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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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| Posted: Tue Feb 15, 2011 5:45 am Post subject: |
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the spares will be shipped to me soon
so I anyone wants to trade or buy one, they will need to be shipped from Australia
_________________
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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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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