How to use ARM's data-abort exception (quote)

How to use ARM's data-abort exception  --- good article about data abort

http://www.embedded.com/shared/printableArticle.jhtml?articleID=192202641

 

(som excerpt)

How exceptions are raised

When can we expect a data-abort exception to be raised on the LPC 2148? These are the three general classes:

• When executing an unaligned memory access using instructions summarized in Table 1
• While performing a write to ROM (flash) space
• When accessing any of the Reserved Areas defined in the LPC 2148 User Manual⁴