请教HI-tech for holtek的混合编程问题

-204 · 2007-11-6 09:23

1.汇编调用c函数的参数传递规则
2.以下代码为何出错

void delay(unsigned char x);

void main()
{
    while(1)
    {
#asm
        MOV a,50
        CALL _delay
#endasm
    }
}
void delay(unsigned char x)
{
    while(x--);
}

编译中...
HI-TECH C COMPILER (Holtek MCU) V9.10PL6
Copyright (C) 1984-2006 HI-TECH SOFTWARE
licensed for evaluation purposes only
this licence will expire on Tue, 04 Dec 2007
: 0: (800) undefined symbol "_delay"
Compilation failed - error code 1