Date   : Mon, 04 Sep 2006 18:56:19 +0100
From   : "Ian Wolstenholme" <BBCMailingList@...>
Subject: Re: *INFO

I think you can "cook" EPROMs to death if you leave them in the
UV Eraser too long, I've no idea how long exactly but I am pretty
sure I have done this in the past so I would say it's probably only
a couple of hours.  I've got plenty of spare EPROMs if you want to 
play about with a few.

Best wishes,



Ian

----- Original Message -----
From: Joel Rowbottom
To:  <tennant@...>,"BBC-Micro Mailing List" <bbc-micro@...>
Sent:  Mon, 04 Sep 2006 16:50:19 +0100
Subject: RE: [BBC-Micro] *INFO

At 10:07 31/08/2006, Tennant wrote:

>I've long since lost my EPROM burner. Is it still possible to buy burners
>(possibly ones to burn EPROMs for the BEEB from a PC) and blank EPROMs?

I've got two EPROM burners. The Watford mk2 is 21V only (so 27128's), 
whereas the other (can't remember the brand) will do 12.5V and 21V. 
The latter was a bit annoying - the cable had been crimped on upside down.

That said, I've not managed to use either to write an EPROM - maybe 
my EPROMs are knackered (not beyond the bounds of possibility, 
they're old). Is there a "maximum" UV exposure time for them before 
they totally screw up?


jx


--
Joel Rowbottom, was-kid, geek, coder, bad penny, 'Net addict since 1991
Personal: http://www.joel.co.uk | Pics: http://photos.jml.net