
MONOLITHIC SYSTEMS, INC. (COLORADO MSI)

MSC CONNECT/AT4, MSC CONNECT/AT8

Card Type              Serial
Processor              80186
Processor Speed        8MHz
Maximum Onboard Memory 32KB DRAM
I/O Options            Serial ports (4 or 8)
Data Bus               16-bit ISA

[Image]

                                CONNECTIONS

         Function            Label            Function            Label

  Serial ports via DB-37      CN1      Daisy-chain in              LK3B
  connector

  Daisy-chain out            LK3A

            Note:Standard DB-25 serial ports are provided on an external
            expansion box. The pinouts for CN1 are not the same on the
            Connect/AT4 and the Connect/AT8, so be sure you have the
            correct expansion box.

            When daisy-chaining cards, the master card should be the
            first card in the chain.

                        USER CONFIGURABLE SETTINGS

                   Setting                      Label        Position

     Factory configured - do not alter          LK4           Open

                           INTERRUPT 1 SELECTION

     Setting         LK2/A         LK2/B          LK2/C         LK2/D

        IRQ3       Pins 1 & 2       Open          Open           Open
                     closed

        IRQ4          Open       Pins 1 & 2       Open           Open
                                   closed

        IRQ5          Open          Open        Pins 1 & 2       Open
                                                 closed

        IRQ7          Open          Open          Open        Pins 1 & 2
                                                                closed

        IRQ10         Open          Open          Open           Open

       IRQ11         Open          Open          Open           Open

        IRQ12         Open          Open          Open           Open

        IRQ15         Open          Open          Open           Open

        Slave         Open          Open          Open           Open
        card

                       INTERRUPT 1 SELECTION (CONT)

     Setting         LK2/E         LK2/F          LK2/G         LK2/H

        IRQ3          Open          Open          Open           Open

        IRQ4          Open          Open          Open           Open

        IRQ5          Open          Open          Open           Open

        IRQ7          Open          Open          Open           Open

        IRQ10      Pins 1 & 2       Open          Open           Open
                     closed

       IRQ11         Open       Pins 1 & 2       Open           Open
                                   closed

        IRQ12         Open          Open        Pins 1 & 2       Open
                                                 closed

        IRQ15         Open          Open          Open        Pins 1 & 2
                                                                closed

        Slave         Open          Open          Open           Open
        card

                           INTERRUPT 2 SELECTION

     Setting         LK2/A         LK2/B          LK2/C         LK2/D

        IRQ3       Pins 2 & 3       Open          Open           Open
                     closed

        IRQ4          Open       Pins 2 & 3       Open           Open
                                   closed

        IRQ5          Open          Open        Pins 2 & 3       Open
                                                 closed

        IRQ7          Open          Open          Open        Pins 2 & 3
                                                                closed

        IRQ10         Open          Open          Open           Open

        IRQ11         Open          Open          Open           Open

       IRQ12         Open          Open          Open           Open

        IRQ15         Open          Open          Open           Open

        Slave         Open          Open          Open           Open
        card

                       INTERRUPT 2 SELECTION (CONT)

     Setting         LK2/E         LK2/F          LK2/G         LK2/H

        IRQ3          Open          Open          Open           Open

        IRQ4          Open          Open          Open           Open

        IRQ5          Open          Open          Open           Open

        IRQ7          Open          Open          Open           Open

        IRQ10      Pins 2 & 3       Open          Open           Open
                     closed

        IRQ11         Open       Pins 2 & 3       Open           Open
                                   closed

       IRQ12         Open          Open        Pins 2 & 3       Open
                                                 closed

        IRQ15         Open          Open          Open        Pins 2 & 3
                                                                closed

        Slave         Open          Open          Open           Open
        card

                           DMA CHANNEL SELECTION

     Setting          LK1/A         LK1/B         LK1/C         LK1/D

         DMA0          Open          Open          Open          Open

         DMA1          Open          Open          Open          Open

         DMA2          Open          Open          Open          Open

         DMA3          Open          Open          Open       Pins 1 & 2,
                                                                3 & 4

        DMA5          Open          Open       Pins 1 & 2,      Open
                                                  3 & 4

         DMA6          Open       Pins 1 & 2,      Open          Open
                                    3 & 4

         DMA7       Pins 1 & 2,      Open          Open          Open
                      3 & 4

                       DMA CHANNEL SELECTION (CONT)

       Setting             LK1/E             LK1/F             LK1/G

           DMA0             Open              Open        Pins 1 & 2, 3 &
                                                                 4

           DMA1             Open          Pins 1 & 2, 3        Open
                                              & 4

           DMA2         Pins 1 & 2, 3         Open             Open
                            & 4

           DMA3             Open              Open             Open

          DMA5             Open              Open             Open

           DMA6             Open              Open             Open

           DMA7             Open              Open             Open

            Note:Pins designated are in the closed position.

