From: turnkit@gmail.com   
      
   Al,   
   I've had that DT-1 gathering dust for four years!  Can I ship it to you --   
   will you dump it???   
      
   Send me a PM with a shipping address if you are game.   
      
   On Friday, July 19, 2013 1:49:38 AM UTC-5, Al Petrofsky wrote:   
   > George Phillips  writes:   
   >   
   > > I've got a DT-1.  But looking into the tech. specs I see that it has   
   >   
   > > some kind of embedded processor with the program burned into it.   
   >   
   > > Reading that ROM would require some serious work (chip decapping and   
   >   
   > > reading the ROM visually).   
   >   
   >   
   >   
   > It's not quite as bad as that.  If you apply the appropriate inputs at   
   >   
   > the appropriate times, an 8051 will dump its ROM out through port 0.   
   >   
   > You could do this using a genuine Intel UPP-103 programmer with the   
   >   
   > UPP-851 personality card, and I suppose there may be other generic ROM   
   >   
   > readers out there that could be coaxed into doing the job.  Worst   
   >   
   > case, you could use the information about program verification in the   
   >   
   > 8051 documentation to build your own 8051-reading device.   
   >   
   >   
   >   
   > See pages 2-17 and 2-18 of "MCS-51 Family of Single Chip Microcomputers   
   >   
   > User's Manual" (Intel, 1981).   
   >   
   >   
   >   
   > http://bitsavers.informatik.uni-stuttgart.de/pdf/intel/8051/MC   
   -51_Users_Manual_Jan81.pdf   
   >   
   >   
   >   
   > -al   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)