1. General-purpose registersR0-R12은 32-bit general-purpose registers for data operations. 2. SP(Stack pointer)The SP is register R13. In Thread mode, bit[1] of the CONTROL register indicates the stack pointer to use: • 0 = Main Stack Pointer (MSP). This is the reset value. • 1 = Process Stack Pointer (PSP). On reset, the processor loads the MSP with the value from address 0x00000000. 3. LR(Link ..