In a message dated 97-04-24 10:47:47 EDT, you write:

<<
 I tend to do development work with a '84 since you don't have to keep
 erasing and waiting, etc.  I have done this in the past with the final
 target being a C54. The latest project I got it working fine with the
 C84 and then changed the processor to C54, compiled and burned a window
 part (C54), but the thing wouldn't work...tried also with a target of
 a C71, again...would not work. Am I missing something here? I would think
 that as long as you stayed within the memory bounds, etc...it should
 target and burn and run in any of these parts.   I suppose I could shrug
 it off and use a C84 part, but its more expensive, and being a good engineer
 I wanna found out why this is happening. Any thoughts?

 hcooper@corp.es.com
  >>
Hello!
Have you changed the restart vectors for the C54?  The vectors are at
different locations.  The C54's vector is at 0x1ff  and the C84's
vectors(plural) are at 0x00 and 0x04 for the respective reset and interupt
vector.  Also there are a few internal differences. (interupts and A4 on the
C84)  You will also need to reassemble the source code with the C54 as the
target processor.

Dave Duley
V.P. DreiTek Inc.