In this chapter the basics of Cortex-M3 basics have been discussed in detail. It explains the registers of Cortex-M3 processor, their general purpose and the difference between low registers and high registers. The readers also get an idea about the basic concept of Stack Memory, Vector Table, the PUSH and POP operations as well as Special Registers and its uses. The Cortex-M3 processor supports two modes and two privilege levels as well as a number of exceptions. This includes a fixed number of system exceptions and a number of interrupts, which is commonly called IRQ.
As we've seen, the Cortex™-M3 processor has registers R0 through R15 and a number of special registers. R0 through R12 are ...