On Dec 31, 2008, at 9:33 AM, Jules Richardson wrote:
    What do people do regarding microcontrollers (old or
new) with
 embedded ROM? I
 mean an EPROM or PROM's just address lines and data, so
 reasonably easy to
 dump - but presumably life's a bit more difficult when the ROM is
 local to the
 CPU... 
    If the protection is not set, you can read just like a EPROM
 microcontroller. If it is set...well, there are ways, but it is
 something hard to do :) 
 
 So do EPROM/PAL programmers exist that are also capable of
 programming (and reading) a variety of microcontroller on-board
 ROMs? They quite possibly do, although I've never seen one (but I
 haven't gone shopping for a programmer in years) 
 
   My Data I/O UniSite (purchased from a listmember) has dealt with
every bizarre chip I've thrown at it.  The supported device list for
the current release of its software contains more than TWENTY
THOUSAND entries.  I can't recommend them highly enough.
   No 1702[A] support, though, sadly, but I have another programmer
for those. :)
             -Dave
--
Dave McGuire
Port Charlotte, FL