TTC COMPUTER PRODUCTS

MP-001

Card Type          I/O controller
Chipset/Controller National Semiconductor
I/O Options        Serial port (4)
Maximum DRAM       N/A

[Image]

                            CONNECTIONS

        Purpose          Location         Purpose          Location

  Serial port 1            J2       Serial port 3            J4

  Serial port 2            J3       Serial port 4            J5

                        BASE ADDRESS CONFIGURATION

  Address Range      SW1/1         SW1/2         SW1/3          SW1/4

  3F8h - 3FFh         Off           N/A           N/A            N/A

  2F0h - 2F7h         On            N/A           N/A            N/A

  2F8h - 2FFh         N/A           Off           N/A            N/A

  3E0h - 3E7h         N/A           On            N/A            N/A

  3E8h - 3EFh         N/A           N/A           Off            N/A

  2E0h - 2E7h         N/A           N/A            On            N/A

  2E8h - 2FFh         N/A           N/A           N/A            Off

  260h - 267h         N/A           N/A           N/A             On

                    PRIMARY PORT ADDRESS CONFIGURATION

    Address Range        SW3/5        SW3/6        SW3/7         SW3/8

  »    3F8h - 3FFh        On           Off          Off           Off

       2F0h - 2F7h        On           Off          Off           Off

       2F8h - 2FFh        Off           On          Off           Off

       3E0h - 3E7h        Off           On          Off           Off

       3E8h - 3EFh        Off          Off           On           Off

       2E0h - 2E7h        Off          Off           On           Off

       2E8h - 2FFh        Off          Off          Off           On

       260h - 267h        Off          Off          Off           On

         Disabled         Off          Off          Off           Off

                   SECONDARY PORT ADDRESS CONFIGURATION

    Address Range        SW3/1        SW3/2        SW3/3         SW3/4

  »    2F8h - 2FFh        Off           On          Off           Off

       3F8h - 3FFh        On           Off          Off           Off

       2F0h - 2F7h        On           Off          Off           Off

       3E0h - 3E7h        Off           On          Off           Off

       3E8h - 3EFh        Off          Off           On           Off

       2E0h - 2E7h        Off          Off           On           Off

       2E8h - 2FFh        Off          Off          Off           On

       260h - 267h        Off          Off          Off           On

         Disabled         Off          Off          Off           Off

                     THIRD PORT ADDRESS CONFIGURATION

    Address Range        SW2/1        SW2/2        SW2/3         SW2/4

  »    3E8h - 3EFh        Off          Off           On           Off

       3F8h - 3FFh        On           Off          Off           Off

       2F0h - 2F7h        On           Off          Off           Off

       2F8h - 2FFh        Off           On          Off           Off

       3E0h - 3E7h        Off           On          Off           Off

       2E0h - 2E7h        Off          Off           On           Off

       2E8h - 2FFh        Off          Off          Off           On

       260h - 267h        Off          Off          Off           On

         Disabled         Off          Off          Off           Off

                     FOURTH PORT ADDRESS CONFIGURATION

    Address Range        SW2/5        SW2/6        SW2/7         SW2/8

  »    260h - 267h        Off          Off          Off           On

       3F8h - 3FFh        On           Off          Off           Off

       2F0h - 2F7h        On           Off          Off           Off

       2F8h - 2FFh        Off           On          Off           Off

       3E0h - 3E7h        Off           On          Off           Off

       3E8h - 3EFh        Off          Off           On           Off

       2E0h - 2E7h        Off          Off           On           Off

       2E8h - 2FFh        Off          Off          Off           On

         Disabled         Off          Off          Off           Off

                             INTERRUPT SELECT

   Port 1      Port    Port    Port    SW1/5    SW1/6     SW1/7    SW1/8
                2       3       4

  »   IRQ4    IRQ3     IRQ4    IRQ3     Off       On       Off      On

      IRQ3    IRQ4     IRQ2    IRQ5      On       On       On       On

      IRQ4    IRQ3     IRQ2    IRQ5     Off       On       On       On

      IRQ3    IRQ4     IRQ5    IRQ2      On      Off       On       On

      IRQ4    IRQ3     IRQ5    IRQ2     Off      Off       On       On

      IRQ3    IRQ4     IRQ3    IRQ4      On       On       Off      On

      IRQ3    IRQ4     IRQ4    IRQ3      On      Off       Off      On

      IRQ4    IRQ3     IRQ3    IRQ4     Off      Off       Off      On