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The MSP430 is a mixed-signal microcontroller family from Texas Instruments, ... Status MSP-FET430PIF TI: Parallel-Port JTAG MSP-FET430UIF TI: USB-Interface
processor status (servicing an interrupt, running in protected mode, etc.) condition codes (result of previous comparisons) Because special registers are closely tied to some special function or status of the microcontroller, they might not be directly writeable by normal instructions (such as adds, moves, etc.). Instead, some special registers ...
A status register, flag register, or condition code register (CCR) is a collection of status flag bits for a processor.Examples of such registers include FLAGS register in the x86 architecture, flags in the program status word (PSW) register in the IBM System/360 architecture through z/Architecture, and the application program status register (APSR) in the ARM Cortex-A architecture.
Control and Status Register (CSR) are auxiliary registers in many CPUs and many microcontrollers that are used for reading status and changing configuration, in contrast to the integer and sometimes floating registers which are used for computation. The control and status registers are often described by a register map.
Status register implements flags: C, T, L, F, Z, N, E, P, I. [1] Instructions are encoded in two-address form in several formats, usually they have 16-bit encoding, but there are two formats for medium immediate instructions with length of 32-bit.
The contents of the register may be read using the move from machine state register (mfmsr) instruction and may be modified by executing the return from interrupt (rfi, rfci, rfdi), system call (sc) and move to machine state register (mtmsr) instructions.
Due to the large number of bits needed to encode the three registers of a 3-operand instruction, RISC architectures that have 16-bit instructions are invariably 2-operand designs, such as the Atmel AVR, TI MSP430, and some versions of ARM Thumb.
It is based on a 32-bit ARM Cortex-M4F CPU, and extends their 16-bit MSP430 line, with a larger address space for code and data, and faster integer and floating point calculation than the MSP430. Like the MSP430, it has a number of built-in peripheral devices, and is designed for low power requirements. In 2021, TI confirmed that the MSP432 has ...