正在学习在mc9s08dz32的板子上移植操作系统。现在是能跑起来了，身边没有板子，想要利用SCI进行串口的模拟调试，在CODEWARRIORV6.2的版本中好像不再支持HCS08了，于是自己写了SCI的驱动，代码如下： void TERMIO_Init(void)
{
  /* SCI1C1: LOOPS=0,SCISWAI=0,RSRC=0,M=0,WAKE=0,ILT=0,PE=0,PT=0 */
  SCI1C1=0x00;               /* Configure the SCI */
  /* SCI1C3: R8=0,T8=0,TXDIR=0,TXINV=0,ORIE=0,NEIE=0,FEIE=0,PEIE=0 */
  SCI1C3=0x00;               /* Disable error interrupts */
  /* SCI1S2: LBKDIF=0,RXEDGIF=0,??=0,RXINV=0,RWUID=0,BRK13=0,LBKDE=0,RAF=0 */
  SCI1S2=0x00;               
  /* SCI1C2: TIE=0,TCIE=0,RIE=0,ILIE=0,TE=0,RE=0,RWU=0,SBK=0 */
  SCI1C2=0x00;               /* Disable all interrupts */
  SCI1BDH = 0x00;                      /* Set high divisor register (enable device) */
  SCI1BDL = 0x4E;                      /* Set low divisor register (enable device) */
  SCI1C2_TE = 0x01;                     /* Enable transmitter */
  SCI1C2_RE = 0x01;                     /* Enable receiver */
 
} byte TERMIO_GetChar(byte *Chr)
{
  byte Result = ERR_OK;                /* Return error code */
  byte StatReg = SCI1S1;               /* Read status register */   if (StatReg & (SCI1S1_OR_MASK|SCI1S1_NF_MASK|SCI1S1_FE_MASK|SCI1S1_PF_MASK)) { /* Is any error set? */
    Result = ERR_COMMON;               /* If yes then set common error value */
  } else if (!(StatReg & SCI1S1_RDRF_MASK)) { /* Is the reciver empty and no error is set? */
    return ERR_RXEMPTY;                /* If yes then error */
  } else {                             /* Intentionally left empty due to compatibility with MISRA rule 60*/
  }
  *Chr = SCI1D;                        /* Read data from the receiver */
  return Result;                       /* Return error code */
} byte TERMIO_PutChar(byte Chr)
{
  if (!SCI1S1_TDRE) {                  /* Is the transmitter empty? */
    return ERR_TXFULL;                 /* If no then error */
  }
  SCI1D = (byte)Chr;                   /* Store char to the transmitter register */
  return ERR_OK;                       /* OK */
} 可是在程序的调用中，借助SCDO命令显示的数据不是很正确，显示的位置也不是执行完输出语句就显示的，我是个新手，所以很多地方还不是很明白，哪位高手给点指点，这种做法是不是正确，该怎么做没有板子的情况下的程序调试呀，谢谢了 此帖出自小平头技术问答