请问cla的MSTF寄存器的值是根据谁来改变的

看一下附件，CLA应用指南，中文的，里面有详细描述MSTF使用方法和原理，希望可以帮到你。

CLA应用手册，中文的，有详细的MSTF描述，希望可以帮到你。

Zero and negative flags are cleared or set based on:
– floating-point moves to registers
– the result of compare, minimum, maximum, negative and absolute value operations
– the integer result of operations such as MMOV16, MAND32, MOR32, MXOR32, MCMP32,
MASR32, MLSR32

谢谢您的耐心指导