We have a custom PCB with a BF537 device on it that has been working well. Recently we fabricated more of these PCBs, and the only change I have noticed is that the SI-revision is now 0.3 instead of 0.2. When I try to load my program from VisualDSP, I get the "Warning: External memory is disabled for this region of memory" message. When I try to do the same operation on the 0.2 hardware, everything seems normal.
Any ideas as to what could be wrong?