EPROM issues, who can burn?

From: Mike Ford <mikeford_at_socal.rr.com>
Date: Mon Nov 1 17:09:53 1999

>> to get old systems running at a low cost, and I think that means original
>> or functional equivalent parts.
>
>Ah, but the modern/larger EPROM _is_ a functional equivalent part.
>
>Yes, obviously you use the original type of EPROM if at all possible. But
>if you _can't_ get the part, then it makes a lot of sense to use (say) a
>2764 with the same code in it.
>
>A secondary issue occurs when the original part was a mask-programmed
>ROM. They can fail as well... Or you might want to make some changes to
>the code. In that case you virtually have to use an EPROM and make an
>adapter.

I don't think we disagree. Whatever part that is handy and works is fine
with me. One off fabrication of an adapter for a nothing special less than
$50 retail value target system though isn't cost effective. Even some sort
of genric adapter may not be a cost effective solution, since many of the
systems I would like to save need to earn their keep, ie value as a usefull
item, not a collectible item.

I used to burn eproms half a dozen times a day and had it setup to take
very little time via some software and a custom board in a Apple II, but I
don't know if I still have it. If I do, then it is a short step to moving
it to a IIgs and suddenly its a nice networked solution to read and write.
Aaack, thats the downside to living in a huge pile of old computers,
sometimes you get the notion of finding something.
Received on Mon Nov 01 1999 - 17:09:53 GMT