David,
     
     I had the same problem with mplab 3.30 about a month ago.
     
     Even when I was sure that the internal MCLR was enabled, simulating 
     with a 0 on GP3 would put it in reset. ( I assumed it was reset as PC 
     = 1FF as you say)
     
     Since it was a panic day, I just assumed mplab had a bug, removed that 
     part of simulation, and blew a chip to test it instead. (which worked 
     as expected).
     
     Sorry I haven't got a solution, but at least you know it's not just 
     you...
     
                Steve Lawther


______________________________ Reply Separator _________________________________
Subject:      MPLAB not MPASM
Author:  MIME:sprenkle@BUSPROD.COM at INTERNET-HUSKY
Date:    16/02/98 12:47


I reread my message about MPASM.  It is MPLAB that I am referring to and 
it is the simulator that is giving me problems.  Also the PC stays at 
01FF not FF.
     
I am using the 12C508 for the processor.
     
I am trying to debug a program by stepping through it using the 
simulator.  Like I said changing the input on pin GP3 to 0 using the 
Modify dialog box or simulator stimulus file make the simulator stay at 
the 01FF address.
     
I am having the problem no matter what .asm file I use. 
--
David