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.