94     struct FPU  struct
96         uint32_t    pad[2];
97         uint16_t    fcw;
98         uint16_t    fsw;
99         uint8_t     ftw;
100         uint8_t     pad1;
101         uint16_t    fop;
102         uint32_t    ip;
103         uint16_t    cs;
104         uint16_t    pad2;
128         FPURegSet = 2,  argument
135         FPUWordCount = sizeof(FPU)/sizeof(uint32_t),  argument