

                                                      page 1.

                                       BlackHawk Enterprises

                       MM/l Serial Paddle Board Documentation

                                              April 2nd, 1993


Thank you for purchasing your serial paddle board from BlackHaWwk Enterprises. Your serial paddle board has been manufactured using boards supplied by Interactive Media Systems and the finest electronic components available. This product has been manufactured with pride, in Enid, Oklahoma. Serial paddle boards carry a one year warranty.

Installing Your Serial Paddle Board

T3/T4 Instalation

		To install your serial paddle board you must have an 8 wire ribbon cable with 2 header connectors at each end. The side of the cable has been marked with a red line to indicate which side of the cable is pin 1. To install your board as serial port /t3 you should attach the I/0 board end of the cable to the set of header pins marked "P9" on the MM/I Input/Output board. This header is found next to the joystick port near the rear of your computer. Nearby is a similar set of header pins marked "P12". This is the connector for serial port /t4. Your serial paddle board is interchangeable between these two ports with the same cable. Next, connect the other end of the cable to the connector marked as "Pl" on the end of the board opposite the male DB9 port with the red mark towards the outside.

Important Note on Cable Orientation!

		Each of the male header connectors used on both the 1/0 board and the paddle board is composed of 8 pins in 2 rows of 4 pins. The female connectors may, depending on parts availability, be 10 pin connectors. Simply orient the cable as described above. On the I/O board, the 68681 chip is mounted close to the P9 and P12 connectors, and prevents incorrect installation PROVIDED THAT YOU DO NOT FORCE THE CONNECTORS TOGETHER. On the paddle board it is possible to install the cable either way. Simply insert the cable making sure that the male pins ARE NOT inserted in the two holes closest to the side of the ribbon cable marked red.


                                                     page I

TI Installation

Your /t1 serial paddle board comes with a four wire cable with a 6 pin single inline header connector on either end. As with the t3/t4 cable, it does not matter which end goes to the paddle board, or to the MM/1 Mother board. The Mother board end should be connected to the connector marked "P9". This is found near the disk drive cable, on the end of the mother board nearest the mini-bus card.




Paddle Board Jumpers

There are 2 sets of jumper blocks on the MM/I Serial Paddle board. 'P2:' is located near the DB9 connector, and controls the RS232C functon of the board, selecting either a DTE or DCE mode. Setting all jumpers in a horizontal manner selects DTE. Setting jumpers vertically selects DCE. See the diagram b.elow.



DTE                                              DCE

        I *--* 2                                     1 *    * 2
                                                             |      |
        3 *--* 4                                    3 *     * 4

        5 *--* 6                                    5 *     * 6
                                                             |       |
        7 *--* 8                                    7 *      * 8

        9 *--* 10                                  9 *       * 10
                                                             |        |
      11 *--* 12                                11 *       * 12 



                                                        page 2

Jumper 'P4' controls the hardware settings for RTS and DTR. One setting allows these control lines to toggle freely, wnile the other setting sets either or both lines to a logical high. See the figure below.

RTS/DTR Toggle        RTS/DTR Tied High

I *--* 2                          1 *    * 2
3 *   * 4                          3 *--* 4
5 *--* 6                         5 *    * 6
7*  	 *8                          7 *--* 8












