Texas Instruments TMS320C3x 사용자 설명서
Other Registers
3-18
3.2
Other Registers
3.2.1
Program-Counter (PC) Register
The program counter (PC) is a 32-bit register containing the address of the
next instruction fetch. While the program-counter register is not part of the
CPU register file, it can be modified by instructions that modify the program
flow.
next instruction fetch. While the program-counter register is not part of the
CPU register file, it can be modified by instructions that modify the program
flow.
3.2.2
Instruction Register (IR)
The instruction register (IR) is a 32-bit register that holds the instruction op-
code during the decode phase of the instruction. This register is used by the
instruction decode control circuitry and is not accessible to the CPU.
code during the decode phase of the instruction. This register is used by the
instruction decode control circuitry and is not accessible to the CPU.