My problem seems to be in the initial data setup phase, there is a sequence in the startup code, that is what is loaded in from the reset vector to my 'c' main code, that 'clears' the xdata area associated with the program variables.
I have several arrays, but the total data that is being cleared seems to be only 37 bytes, from the .map file. By single stepping through the start up code, it seems that when the several loops are completed, initialization continues, by writing the pattern 0xf0 to internal ram, starting at location 0x08. At that point the startup code jumps back to the reset location, and then performs the initial LJMP back into the initialization code, and, essentially loops forever. Unfortunately, when I attempt to pair down the code to submit a small snippet that demostrates the problem, the problem disappears. However, in the code that fails, only a 3 byte array can change the program from 'working' to 'non-working'. If others have seen similar problems I'd appriciate any clues on where to go to solve this problem. John Clark. ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
