SEALEVEL SYSTEMS, INC.

C4-104

Card Type          Serial card
Chip Set           Unidentified
I/O Options        Serial ports (4), PC/104 connectors (2)
Data Bus           Unidentified

[Image]

                                CONNECTIONS

          Function            Label            Function             Label

  Serial port                  J1     Serial port                    J4

  Serial port                  J2     PC/104 connector (8-bit)       P1

  Serial port                  J3     PC/104 connector (16-bit)      P2

                        USER CONFIGURABLE SETTINGS

                 Function                    Label         Position

  »   Factory configured – do not alter       E5         Unidentified

  »   Factory configured – do not alter       E6         Unidentified

                       SERIAL PORT ADDRESS SELECTION

   Port 1     Port    Port    Port    SW1/1    SW1/2     SW1/3     SW1/4
               2       3       4

  »   3F8     2F8     3E8     2E8       On       On       On        On

      2F8     3E8     2E8     2E0       On       On       On        Off

      3E8     2E8     280     288       On       On       Off       On

      280     288     290     298       On       On       Off       Off

      2A0     2A8     2B0     2B8       On      Off       On        On

      500     508     510     518       On      Off       On        Off

      580     588     590     598       On      Off       Off       On

                     SERIAL PORT 1 INTERRUPT SELECTION

                 IRQ                                   E1

                   2/9                         Pins 1 & 2 closed

                    3                          Pins 3 & 4 closed

                    4                          Pins 5 & 6 closed

                    5                          Pins 7 & 8 closed

                    7                          Pins 9 & 10 closed

                    10                        Pins 11 & 12 closed

                    11                        Pins 13 & 14 closed

                    12                        Pins 15 & 16 closed

                    15                        Pins 17 & 18 closed

  »                 R                         Pins 19 & 20 closed

  Note: IRQ R connects a 1k ohm pull down resistor to allow multiple
  ports to share a single IRQ.

                     SERIAL PORT 2 INTERRUPT SELECTION

                 IRQ                                   E2

                   2/9                         Pins 1 & 2 closed

                    3                          Pins 3 & 4 closed

                    4                          Pins 5 & 6 closed

                    5                          Pins 7 & 8 closed

                    7                          Pins 9 & 10 closed

                    10                        Pins 11 & 12 closed

                    11                        Pins 13 & 14 closed

                    12                        Pins 15 & 16 closed

                    15                        Pins 17 & 18 closed

  »                 R                         Pins 19 & 20 closed

                     SERIAL PORT 3 INTERRUPT SELECTION

                 IRQ                                   E3

                   2/9                         Pins 1 & 2 closed

                    3                          Pins 3 & 4 closed

                    4                          Pins 5 & 6 closed

                    5                          Pins 7 & 8 closed

                    7                          Pins 9 & 10 closed

                    10                        Pins 11 & 12 closed

                    11                        Pins 13 & 14 closed

                    12                        Pins 15 & 16 closed

                    15                        Pins 17 & 18 closed

  »                 R                         Pins 19 & 20 closed

                     SERIAL PORT 4 INTERRUPT SELECTION

                 IRQ                                   E4

                   2/9                         Pins 1 & 2 closed

                    3                          Pins 3 & 4 closed

                    4                          Pins 5 & 6 closed

                    5                          Pins 7 & 8 closed

                    7                          Pins 9 & 10 closed

                    10                        Pins 11 & 12 closed

                    11                        Pins 13 & 14 closed

                    12                        Pins 15 & 16 closed

                    15                        Pins 17 & 18 closed

  »                 R                         Pins 19 & 20 closed

            SERIAL PORT 1 SELECTION

        Setting                   E7

     RS-485 enabled        Pins 1 & 2 closed

  RS-485 echo disabled     Pins 3 & 4 closed

            SERIAL PORT 2 SELECTION

        Setting                   E7

     RS-485 enabled        Pins 5 & 6 closed

  RS-485 echo disabled     Pins 7 & 8 closed

            SERIAL PORT 3 SELECTION

        Setting                   E8

     RS-485 enabled        Pins 1 & 2 closed

  RS-485 echo disabled     Pins 3 & 4 closed

            SERIAL PORT 4 SELECTION

        Setting                   E8

     RS-485 enabled        Pins 5 & 6 closed

  RS-485 echo disabled     Pins 7 & 8 closed