[rescue] Looking for some used EPROM chips...

Lionel Peterson lionel4287 at gmail.com
Mon Feb 2 08:25:42 CST 2009

On Feb 2, 2009, at 8:43 AM, Mr Ian Primus <ian_primus at yahoo.com> wrote:

> --- On Sun, 2/1/09, Patrick Finnegan <pat at computer-refuge.org> wrote:
>> On Sunday 01 February 2009, Mr Ian Primus wrote:
>>> I'm working on a project that needs some EPROM
>> chips - larger ones
>>> than I have scavenged over the years. Primarily, I
>> need 8 megabit
>>> chips - 27c080 or similar, but I also am looking for
>> 4's and 2's.
>>> Anyone have some superfluous scavenged 'bugs'
>> they could part with?
>> Is there any reason that you don't want to use flash
>> instead of an
>> EPROM?  For a new design, I'd much rather use flash
>> over an EPROM.
> Well, there's a few reasons, and maybe partly because I've never  
> used flash for anything, but I avoid them...
> 1) I have nothing that can program a flash chip. Unless there's some  
> function of my PB-10 EPROM programmer that I am unaware of.
> 2) I've not seen DIP package 8mbit flash chips. By the time they got  
> to the larger sizes, flash chips got to be these tiny surface mount  
> things. I don't feel like spending tons of time trying to adapt them  
> to fit in DIP sockets.
> 3) I'm using this as a semi-permanent/permanent ROM, not something  
> that I'm developing on and will need to reprogram many times. The  
> quick erase-reprogram is not feature I need or care about.
> 4) I like EPROMS :) I have all the equipment to use them, and I find  
> them to be fast and efficient for my purposes. I'm comfortable  
> working with them, and I know how to wire them up and can be sure  
> that they'll work the way I want them to. I use them all the time,  
> in all sizes, for all kinds of things. I'm just looking for the  
> larger sizes right now because I need some and don't have any.
> I'd gladly give a home to any wayward EPROMs - some of them feel  
> awfully abandoned right now. They're upset because people shun them  
> favor of these flashy new technologies. The flash chips taunt them  
> and call them names, and the EPROMs are running out of comebacks.  
> "I'm not fat, I'm just ceramic packaged!".
> <grin>

I am casually looking for EPROMs for an Oberheim DMX drum machine,  
2708 and 2716, IIRC.


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