[sdiy-interim] EPROM Armageddon?
Roy J. Tellason
rtellason at verizon.net
Wed Mar 28 18:36:15 CEST 2007
On Wednesday 28 March 2007 13:27, Robin Whittle wrote:
> http://www.computermuseum.li/Testpage/Chip-Intel1702EPROM.htm
>
> I keep telling myself I should read the data from this, a triple supply
> voltage device which ordinary programmers can't read, in case the data
> fades away one day. This was the earliest EPROM, and it was probably
> programmed about 30 years ago.
There were earlier parts, but they weren't common.
One thing that sticks in my memory from back then, the 1702 needed that -9V
supply to come up _first_ and to go away _last_ or bad things would happen...
I have a few of them, if anybody needs some, nice ceramic and gold packages
just like the picture in the above link.
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
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