QUATECH, INC.

QS-200M/300M

Card Type          Serial controller
Chipset/Controller 16450/16550 UART
I/O Options        Serial ports (4)
Maximum DRAM       N/A

[Image]

                                CONNECTIONS

         Purpose           Location           Purpose           Location

  Serial port 1 - RJ-11      CN1       Serial port 3 - RJ-11      CN3

  Serial port 2 - RJ-11      CN2       Serial port 4 - RJ-11      CN4

                         INPUT CLOCK CONFIGURATION

                   MHz                                  J1

  »               1.8432MHz               Pins 1 & 4, 2 & 3, 5 & 6 closed

                  3.6864MHz                  Pins 2 & 3, 4 & 5 closed

                  9.216MHz                   Pins 1 & 2, 5 & 6 closed

                  18.432MHz                      Pins 2 & 5 closed

                             DUPLEX SELECTION

        Setting            J2/A         J2/B         J2/C         J2/D

  »      Port 1 full       Open         N/A          N/A          N/A
        duplex mode

         Port 1 half      Closed        N/A          N/A          N/A
        duplex mode

  »      Port 2 full        N/A         Open         N/A          N/A
        duplex mode

         Port 2 half        N/A        Closed        N/A          N/A
        duplex mode

  »      Port 3 full        N/A         N/A          Open         N/A
        duplex mode

         Port 3 half        N/A         N/A         Closed        N/A
        duplex mode

  »      Port 4 full        N/A         N/A          N/A          Open
        duplex mode

         Port 4 half        N/A         N/A          N/A         Closed
        duplex mode

                          INTERRUPT SELECT

   IRQ       J3/A      J3/B     J3/C      J3/D     J3/E      J3/F

   IRQ2     Closed     Open     Open      Open     Open      Open

   IRQ3      Open     Closed    Open      Open     Open      Open

   IRQ4      Open      Open     Closed    Open     Open      Open

   IRQ5      Open      Open     Open     Closed    Open      Open

   IRQ6      Open      Open     Open      Open     Closed    Open

   IRQ7      Open      Open     Open      Open     Open      Closed

  Note: All ports share the same IRQ.

                        I/O ADDRESS CONFIGURATION

         Base Address                  SW1                   SW2

  »            300h              1, 2, 3, 4, 5 & 6       3, 4 & 5 On
                                        On

               6A0h             1, 2, 3, 4 & 5 On          2 & 4 On

               5220h              1, 3, 5 & 6 On         2, 3 & 4 On

            Note (1): The address range for the QS-200M/300M is from 0 to
            FFFFh. The switches are a binary representation of the
            addresses. When a switch is off, the corresponding bit is set
            to 1 and has the following decimal value: SW1/1=8, SW1/2=4,
            SW1/3=2, SW1/4=1, SW1/5=8, SW1/6=4, SW2/1=2, SW2/2=1,
            SW2/3=8, SW2/4=4, SW2/5=2. The QS-200M/300M requires 32
            consecutive address locations for all four serial ports.

            Note (2): The base address selected above is for Port 1. To
            obtain the addresses for the other ports, add to the Port 1
            address the following numbers:

            Port 2 address = Port 1 address + 8

            Port 3 address = Port 1 address + 16

            Port 4 address = Port 1 address + 24

                         INTERRUPT STATUS REGISTER

               Setting                               SW2/6

  Interrupt status register enabled                    On

  Interrupt status register disabled                  Off