你是要PCI中操作串口吗？ 你用什么开发的DDK？DS?还是WDK啊？ PCI驱动获得PCI配置空间比较容易。 我认为在驱动里直接去打开Serial0，然后操作串口就可以了 建议你看看ddk的帮助。 Serial Device Control Requests [This is preliminary documentation and subject to change.] This section describes the following device control requests that Serial supports: IOCTL_SERIAL_CLEAR_STATS IOCTL_SERIAL_CLR_DTR IOCTL_SERIAL_CLR_RTS IOCTL_SERIAL_CONFIG_SIZE IOCTL_SERIAL_GET_BAUD_RATE IOCTL_SERIAL_GET_CHARS IOCTL_SERIAL_GET_COMMSTATUS IOCTL_SERIAL_GET_DTRRTS IOCTL_SERIAL_GET_HANDFLOW IOCTL_SERIAL_GET_LINE_CONTROL IOCTL_SERIAL_GET_MODEM_CONTROL IOCTL_SERIAL_GET_MODEMSTATUS IOCTL_SERIAL_GET_PROPERTIES IOCTL_SERIAL_GET_STATS IOCTL_SERIAL_GET_TIMEOUTS IOCTL_SERIAL_GET_WAIT_MASK IOCTL_SERIAL_IMMEDIATE_CHAR IOCTL_SERIAL_LSRMST_INSERT IOCTL_SERIAL_PURGE IOCTL_SERIAL_RESET_DEVICE IOCTL_SERIAL_SET_BAUD_RATE IOCTL_SERIAL_SET_BREAK_OFF IOCTL_SERIAL_SET_BREAK_ON IOCTL_SERIAL_SET_CHARS IOCTL_SERIAL_SET_DTR IOCTL_SERIAL_SET_FIFO_CONTROL IOCTL_SERIAL_SET_HANDFLOW IOCTL_SERIAL_SET_LINE_CONTROL IOCTL_SERIAL_SET_MODEM_CONTROL IOCTL_SERIAL_SET_QUEUE_SIZE IOCTL_SERIAL_SET_RTS IOCTL_SERIAL_SET_TIMEOUTS IOCTL_SERIAL_SET_WAIT_MASK IOCTL_SERIAL_SET_XOFF IOCTL_SERIAL_SET_XON IOCTL_SERIAL_WAIT_ON_MASK IOCTL_SERIAL_XOFF_COUNTER No other device control codes are supported. I/O Status Block The Information member is set to a request-specific value or to zero. The Status member is set to a request-specific status value or to one of the following generic status values: STATUS_SUCCESS STATUS_BUFFER_SIZE_TOO_SMALL The input or the output buffer is too small to hold the required information. STATUS_CANCELLED The client canceled the request. For all control codes other than IOCTL_SERIAL_GET_COMMSTATUS, Serial also cancels a request if a device error occurs and Serial is configured to cancel a request if there is a device error. STATUS_DELETE_PENDING There was an unrecoverable hardware error, or a Plug and Play remove or surprise remove operation is in progress. STATUS_INVALID_DEVICE_REQUEST The COM port is not open. STATUS_INVALID_PARAMETER The request parameters are not valid. STATUS_PENDING Serial queued the request for later processing. STATUS_Xxx An internal operation returned an NTSTATUS error status value. If Serial does not support a device control request, it sets the Information member to zero and the Status member to STATUS_INVALID_PARAMETER.

void delay(uchar z) { uchar x,y; for(x=0;x

我刚试过,还是一样的现象(发现一个问题),程序应驱除 if(RI==1) { },但有关复位的问题依旧.只是复位后LED灯不是原来的全熄灭,而是全亮.更不明白了.     下面用查询方式现象也是同样的! #include void mian() {         TMOD=0x20;         TH1=0xfd;         TL1=0xfd;         TR1=1;         SM1=1;         REN=1;         EA=1;         ES=1;         while(1)         {                         if(RI==1)                 {                         RI=0;                         P1=SBUF;                 }                 } }

非常感谢，支持楼主！