
DATA TECHNOLOGY CORPORATION

DTC2278D+ (400537-89A)

Card Type               Hard drive controller card
Hard drives supported   Four IDE(AT) interface drives
Floppy drives supported Two 360KB, 720KB, 1.2MB, 1.44MB drives
Data-bus                32-bit VESA Local Bus
Size                    Full-length, half-height card

[Image]

                                CONNECTIONS

        Function            Label            Function             Label

  25-pin parallel port -     J1       34-pin control cable         J5
  external                            connector - floppy
                                      drive

  10-pin serial port 2 -     J2       40-pin IDE(AT)               J6
  internal                            secondary interface
                                      connector

  9-pin serial port 1 -      J3       40-pin IDE(AT) primary       J7
  external                            interface connector

  16-pin game port -         J4       Drive active LED             J8
  internal

                       USER CONFIGURABLE CONNECTIONS

               Function                     Location          Setting

     Game port enabled                       W14             Closed

      Game port disabled                      W14              Open

                      SERIAL PORT 1 ADDRESS SELECTION

           Setting                     W5                     W6

          COM1 (3F8h)         Pins 1 & 2 closed      Pins 2 & 3 closed

           COM3 (3E8h)         Pins 2 & 3 closed      Pins 1 & 2 closed

            Disabled           Pins 1 & 2 closed      Pins 1 & 2 closed

                      SERIAL PORT 2 ADDRESS SELECTION

           Setting                     W3                     W4

          COM2 (2F8h)         Pins 1 & 2 closed      Pins 2 & 3 closed

           COM4 (2E8h)         Pins 2 & 3 closed      Pins 1 & 2 closed

            Disabled           Pins 1 & 2 closed      Pins 1 & 2 closed

               PARALLEL PORT ADDRESS SELECTION

       Setting                W1                   W2

     LPT1 (378h)       Pins 2 & 3 closed   Pins 1 & 2 closed

     LPT2 (278h)       Pins 1 & 2 closed   Pins 2 & 3 closed

     LPT3 (3BCh)       Pins 2 & 3 closed   Pins 2 & 3 closed

      Disabled         Pins 1 & 2 closed   Pins 1 & 2 closed

                     SERIAL PORT 1 INTERRUPT SELECTION

         IRQ                 W19               W20              W21

           IRQ3              Open            Closed             Open

          IRQ4              Open             Open             Closed

           IRQ5             Closed            Open              Open

                     SERIAL PORT 2 INTERRUPT SELECTION

         IRQ                 W16               W17              W18

          IRQ3              Open             Open             Closed

           IRQ4              Open            Closed             Open

           IRQ5             Closed            Open              Open

                     PARALLEL PORT INTERRUPT SELECTION

           IRQ                      W12                      W13

             IRQ5                  Closed                   Open

            IRQ7                   Open                   Closed

                      MISCELLANEOUS TECHNICAL NOTES

  The parallel port on the DTC2278D+ only supports bidirectional mode.

