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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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 Posted: Thu Jan 07, 2021 4:39 pm Post subject: CPU Shack: Early Gold AMD AM27C1024 EPROMs - CLOSED |
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These are all early AMD AM27C1024 CMOS 1Mbit EPROMs which may explain why AMD could not make up their mind on markings style
These are actually the earliest 27C1024s I have seen, from ANY make, TI had prototype 27C210s (same part basically) in 1987-88 and Intel made a NMOS one in 1986
Some of these are of particular interest as they are also marked OTP, seems AMD sold some UV-EPROMs as OTP-PROMS.
Also the chipped one I normally would srap, but its particularly early and very oddly marked 11.5V instead of the more normal 12.5V, maybe AMD was trying to get a lower programming voltage to work?
SOLDx A AM27C1024-200DC 11.5V $2
SOLDx B AM27C1024-205DI Industrial spec $5
1x C AM27C1024-205DC 4 row $3
2x D AM27C1024-205DC 5 row date first $3
6x E AM27C1024-205DC 5 row date last $3
2x F AM27C1024-205DC OTP 6 row date last $3
6x G AM27C1024-205DC OTP 6 row date first $3
6x H AM27C1024-205DC OTP 5 row $3
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Last edited by CPUShack on Wed Feb 17, 2021 12:58 pm; edited 3 times in total |
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cuttingedgecs
Joined: 08 Oct 2017
Posts: 1764
Location: Australia
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| Posted: Thu Jan 07, 2021 4:40 pm Post subject: |
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| A $2 please |
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cvandijk
Joined: 21 Jul 2016
Posts: 3589
Location: Netherlands
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| Posted: Thu Jan 07, 2021 4:44 pm Post subject: |
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| 1 of each, thanks |
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yy2013
Joined: 12 Sep 2009
Posts: 739
Location: Nagoya, Japan
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| Posted: Thu Jan 07, 2021 6:51 pm Post subject: |
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2x E AM27C1024-205DC 5 row date last $3
2x F AM27C1024-205DC OTP 6 row date last $3
2x G AM27C1024-205DC OTP 6 row date first $3
2x H AM27C1024-205DC OTP 5 row $3 |
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debs3759
Joined: 18 Jan 2006
Posts: 9477
Location: Northampton, Divided Kingdom
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| Posted: Thu Jan 07, 2021 7:11 pm Post subject: |
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Any 4 different for me please
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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| Posted: Thu Jan 07, 2021 7:15 pm Post subject: |
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| debs3759 wrote: | | Any 4 different for me please |
1x D AM27C1024-205DC 5 row date first $3
1x E AM27C1024-205DC 5 row date last $3
1x G AM27C1024-205DC OTP 6 row date first $3
1x H AM27C1024-205DC OTP 5 row $3
_________________
New for 2025! The CPU Shack has a co-processor!
Visit The CPU Shack of microprocessor history and information. |
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debs3759
Joined: 18 Jan 2006
Posts: 9477
Location: Northampton, Divided Kingdom
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| Posted: Thu Jan 07, 2021 7:26 pm Post subject: |
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Thanks
_________________
My graphics card database can be found at http://www.gpuzoo.com.
I can resist anything except temptation.
Debs |
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tunder10
Joined: 08 Nov 2006
Posts: 5001
Location: italy
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| Posted: Fri Jan 08, 2021 2:25 am Post subject: |
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| 1x G AM27C1024-205DC OTP 6 row date first $3 thanks |
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lavrentii
Joined: 14 Feb 2021
Posts: 799
Location: Bulgaria
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| Posted: Wed Feb 17, 2021 2:25 am Post subject: |
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| One of each available , please |
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