Hi All: I want to move two local valuables to x86 arch CPU ebx, ecx register and do outb cpu instruction by using AT&A inline asm in kernel driver. The following code was I wrote but gcc report syntax error: == unsigned int val = 10; unsigned int tmp = 5; .... __asm__ volatile ("movl %0, %%ebx" "movl %1, %%ecx" "outb $0x27, $0xb2" : :"r"(val), "r"(tmp) :"%ebx", "%ecx" ); Does anyone can point me out. Any reply is appreciated. BRs, H. Johnny -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html