
VIVA COMPUTER COMPANY

DUAL SERIAL CARD

Card Type          Serial
Chipset Controller Unidentified
I/O Options        Serial port (2)
Maximum Dram       N/A

[Image]

                                CONNECTIONS

     Purpose           Location           Purpose           Location

  9-pin serial            CN1         10-pin serial            CN2
  port                                port

                           SERIAL PORT 1 SELECT

      COM            JP1/A         JP1/B          JP1/C         JP1/D

       COM1       Pins 1 & 2    Pins 1 & 2     Pins 1 & 2    Pins 1 & 2
                    closed          open          open           open

        COM2       Pins 1 & 2    Pins 1 & 2     Pins 1 & 2    Pins 1 & 2
                     open          closed         open           open

        COM3       Pins 1 & 2    Pins 1 & 2     Pins 1 & 2    Pins 1 & 2
                     open           open         closed          open

        COM4       Pins 1 & 2    Pins 1 & 2     Pins 1 & 2    Pins 1 & 2
                     open           open          open          closed

                           SERIAL PORT 2 SELECT

      COM            JP1/A         JP1/B          JP1/C         JP1/D

       COM1       Pins 2 & 3    Pins 2 & 3     Pins 2 & 3    Pins 2 & 3
                    closed          open          open           open

        COM2       Pins 2 & 3    Pins 2 & 3     Pins 2 & 3    Pins 2 & 3
                     open          closed         open           open

        COM3       Pins 2 & 3    Pins 2 & 3     Pins 2 & 3    Pins 2 & 3
                     open           open         closed          open

        COM4       Pins 2 & 3    Pins 2 & 3     Pins 2 & 3    Pins 2 & 3
                     open           open          open          closed

                           SERIAL PORT 1 SELECT

                 IRQ                                  JP2/A

                  IRQ3                          Pins 2 & 3 open

                   IRQ4                         Pins 1 & 2 closed

                           SERIAL PORT 2 SELECT

                 IRQ                                  JP2/B

                  IRQ4                         Pins 1 & 2 closed

                   IRQ3                          Pins 2 & 3 open

