ARM DS-5 Using the Debug Hardware Configuration Utilities

Debugging with your debug hardware unit8.18 Debugging systems with ROM at the exception vectorWhen debugging processors without vector catch hardware and with ROM rather than RAM atthe exception vector, you must disable vector catching. This prevents debug hardware fromtrying to set hardware breakpoints on the vector table.The default setting is to enable, exception trapping on reset, prefetch abort, and data abort. Ona processor without vector catch hardware, three breakpoint resources are used in ROM.Therefore, if a processor has three or fewer resources, you cannot debug applications runningon that processor.8.18.1 See alsoTasks• Post-mortem debugging on page 8-2.Concepts• Debugging with a simulated reset on page 8-19• Debugging with a reset register on page 8-20• Debugging with a target reset on page 8-21.ARM DUI 0498F Copyright © 2010-2012 ARM. All rights reserved. 8-22ID021112Non-Confidential