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 Errors in the cable diagram of the manual for the serial port are shown 

 corrected below.





 Portfolio serial cable for Modem





 .   Signal    DB9 line      DB25 line



 .      CD        1  -------    8



 *      RD        2  -------    3



 *      TD        3  -------    2



 .     DTR        4  -------    20



 .     GND        5  -------    7



 .     DSR        6  -------    6



 .     RTS        7  -------    4



 .     CTS        8  -------    5



 .      RI        9  -------   22











 Portfolio Serial Cable for IBM PC/XT



 .   Signal    DB9 line      DB25 line



 .      CD        1 NC          1 NC



 *      RD        2  -------    2



 *      TD        3  -------    3



 .     DTR     -- 4             4  --

               |                    |

 .     GND     |  5  --         5  --

               |        \

 .     DSR     -- 6      \      6  --

                          \         |

 *     RTS     -- 7        --   7   |

               |                    |

 *     CTS     -- 8             8  --

                                    |

 .     RI         9 NC          20 --



