infoPtr->flags &= ~SERIAL_CLOSE_MASK;
	    infoPtr->flags |= SERIAL_CLOSE_DRAIN;
	} else if (strncasecmp(value, "DISCARD", vlen) == 0) {
	    infoPtr->flags &= ~SERIAL_CLOSE_MASK;
	    infoPtr->flags |= SERIAL_CLOSE_DISCARD;
	} else {
	    if (interp) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"bad mode \"%s\" for -closemode: must be"
			" default, discard, or drain", value));
		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
			"VALUE", (char *)NULL);
	    }
	    return TCL_ERROR;
	}
	return TCL_OK;
    }

	Tcl_DStringInit(&ds);
	native = Tcl_UtfToWCharDString(value, TCL_INDEX_NONE, &ds);
	result = BuildCommDCBW(native, &dcb);
	Tcl_DStringFree(&ds);

	if (result == FALSE) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"bad value \"%s\" for -mode: should be baud,parity,data,stop",
			value));
		Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", (char *)NULL);
	    }
	    return TCL_ERROR;
	}

	/*
	 * Default settings for serial communications.

	    dcb.fOutxCtsFlow = TRUE;
	    dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;
	} else if (strncasecmp(value, "DTRDSR", vlen) == 0) {
	    dcb.fOutxDsrFlow = TRUE;
	    dcb.fDtrControl = DTR_CONTROL_HANDSHAKE;
	} else {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"bad value \"%s\" for -handshake: must be one of"
			" xonxoff, rtscts, dtrdsr or none", value));
		Tcl_SetErrorCode(interp, "TCL", "VALUE", "HANDSHAKE", (char *)NULL);
	    }
	    return TCL_ERROR;
	}

	if (!SetCommState(infoPtr->handle, &dcb)) {
	    goto setStateFailed;

	int res = TCL_OK;

	if (Tcl_SplitList(interp, value, &argc, &argv) == TCL_ERROR) {
	    return TCL_ERROR;
	}
	if ((argc % 2) == 1) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"bad value \"%s\" for -ttycontrol: should be "
			"a list of signal,value pairs", value));
		Tcl_SetErrorCode(interp, "TCL", "VALUE", "TTYCONTROL", (char *)NULL);
	    }
	    Tcl_Free((void *)argv);
	    return TCL_ERROR;
	}

	for (i = 0; i < argc - 1; i += 2) {

				"FCONFIGURE", "TTY_SIGNAL", (char *)NULL);
		    }
		    res = TCL_ERROR;
		    break;
		}
	    } else {
		if (interp != NULL) {
		    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			    "bad signal name \"%s\" for -ttycontrol: must be"
			    " DTR, RTS or BREAK", argv[i]));
		    Tcl_SetErrorCode(interp, "TCL", "VALUE", "TTY_SIGNAL",
			    (char *)NULL);
		}
		res = TCL_ERROR;
		break;
	    }
	}

	    inSize  = atoi(argv[0]);
	    outSize = atoi(argv[1]);
	}
	Tcl_Free((void *)argv);

	if ((argc < 1) || (argc > 2) || (inSize <= 0) || (outSize <= 0)) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"bad value \"%s\" for -sysbuffer: should be "
			"a list of one or two integers > 0", value));
		Tcl_SetErrorCode(interp, "TCL", "VALUE", "SYS_BUFFER", (char *)NULL);
	    }
	    return TCL_ERROR;
	}

	if (!SetupComm(infoPtr->handle, inSize, outSize)) {
	    if (interp != NULL) {
		Tcl_WinConvertError(GetLastError());
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"can't setup comm buffers: %s",
			Tcl_PosixError(interp)));
	    }
	    return TCL_ERROR;
	}
	infoPtr->sysBufRead  = inSize;
	infoPtr->sysBufWrite = outSize;

	/*

	if (Tcl_GetInt(interp, value, &msec) != TCL_OK) {
	    return TCL_ERROR;
	}
	tout.ReadTotalTimeoutConstant = msec;
	if (!SetCommTimeouts(infoPtr->handle, &tout)) {
	    if (interp != NULL) {
		Tcl_WinConvertError(GetLastError());
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"can't set comm timeouts: %s",
			Tcl_PosixError(interp)));
	    }
	    return TCL_ERROR;
	}

	return TCL_OK;
    }

    return Tcl_BadChannelOption(interp, optionName,
	    "closemode mode handshake pollinterval sysbuffer timeout "
	    "ttycontrol xchar");

  getStateFailed:
    if (interp != NULL) {
	Tcl_WinConvertError(GetLastError());
	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		"can't get comm state: %s", Tcl_PosixError(interp)));
    }
    return TCL_ERROR;

  setStateFailed:
    if (interp != NULL) {
	Tcl_WinConvertError(GetLastError());
	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		"can't set comm state: %s", Tcl_PosixError(interp)));
    }
    return TCL_ERROR;
}

/*
 *----------------------------------------------------------------------
 *

	char parity;
	const char *stop;
	char buf[2 * TCL_INTEGER_SPACE + 16];

	if (!GetCommState(infoPtr->handle, &dcb)) {
	    if (interp != NULL) {
		Tcl_WinConvertError(GetLastError());
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"can't get comm state: %s", Tcl_PosixError(interp)));
	    }
	    return TCL_ERROR;
	}

	valid = 1;
	parity = 'n';
	if (dcb.Parity <= 4) {

    if (len==0 || (len>1 && strncmp(optionName, "-xchar", len) == 0)) {
	char buf[4];
	valid = 1;

	if (!GetCommState(infoPtr->handle, &dcb)) {
	    if (interp != NULL) {
		Tcl_WinConvertError(GetLastError());
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"can't get comm state: %s", Tcl_PosixError(interp)));
	    }
	    return TCL_ERROR;
	}
	buf[Tcl_UniCharToUtf(UCHAR(dcb.XonChar), buf)] = '\0';
	Tcl_DStringAppendElement(dsPtr, buf);
	buf[Tcl_UniCharToUtf(UCHAR(dcb.XoffChar), buf)] = '\0';
	Tcl_DStringAppendElement(dsPtr, buf);

    if (len>4 && strncmp(optionName, "-ttystatus", len)==0) {
	DWORD status;

	if (!GetCommModemStatus(infoPtr->handle, &status)) {
	    if (interp != NULL) {
		Tcl_WinConvertError(GetLastError());
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"can't get tty status: %s", Tcl_PosixError(interp)));
	    }
	    return TCL_ERROR;
	}
	valid = 1;
	SerialModemStatusStr(status, dsPtr);
    }