Date   : Sun, 06 Oct 2002 23:12:43 -0700
From   : "Alastair Seggie" <alastairseggie@...>
Subject: Copying Paged eproms on a carrier

Hi all

About a year ago I bought an old Denford Starturn 8 CNC lathe this runs
off a BBC computer Via the 1MHz bus. It has an EPROM that has to be
inserted in to the BBC before it will work. This (I was told) acts as
software protection A dongle if you like. This  28 pin EPROM is on a
carrier board with a 20 pin device mounted below it on the carrier PCB
(this has had all its identification ground off). Once this is inserted
it is just a matter of inserting the program disk
[SHIFT+CTRL]....KLIK...KLIK... WHIRRR WHIRR.... and it is all running.
Now the problem I have is that the EPROM I am talking about is not mine.

I need to be able to copy this EPROM. I am told that the 20 pin device
is there to page the EPROM. I have also been told that people used to
read the code from the EPROM hack the code and then blow multiple
EPROM's as a route around the carrier debacle. An example I was given
was Interword. 

Does anyone have any advice? Has anyone ever attempted this, even better
yet has any one been successful in coping such a device?  
I also need any information on the "Multiprom" EPROM Programmer
specifically will it copy large EPROM's so I could copy this one. Any
Info on the programmer would be appreciated.

Alastair