
DATA TECHNOLOGY CORPORATION

DTC540DB

Data Bus                SASI
Card Size               146 x 203mm
Hard Drives Supported   Two ST506/412-MFM devices

                        One QIC-02 device
Floppy Drives Supported Four 360KB drives

[Image]

                                CONNECTIONS

         Function            Label            Function            Label

  50-pin SASI connector -      J1      34-pin cable connector      J7
  to SASI controller                   - floppy drive

  34-pin hard drive            J2      50-pin QIC-02               J8
  control cable                        connector - internal

  20-pin hard drive data       J3      4-pin DC power in           J10
  cable

  20-pin hard drive data       J4
  cable

                        USER CONFIGURABLE SETTINGS

                  Setting                     Label         Position

     SASI bus terminated                       T1          Installed

      SASI bus not terminated                   T1        Not installed

     SASI bus parity enabled                   W1          Pins 1 & 2
                                                             closed

      SASI bus parity disabled                  W1          Pins 2 & 3
                                                             closed

     QIC-02 parity enabled                     W2          Pins 1 & 2
                                                             closed

      QIC-02 parity disabled                    W2          Pins 2 & 3
                                                             closed

     Logical Unit Number 0 is assigned         W5            Open
      to hard drive

      Logical Unit Number 0 is assigned         W5           Closed
      to floppy drive

     Logical Unit Number 1 is assigned         W6           Closed
      to floppy drive

      Logical Unit Number 1 is assigned         W6            Open
      to hard drive

     Factory configured - do not alter         W7           Closed

     Logical Unit Number 3 is assigned         W8            Open
      to QIC-02 tape drive

      Logical Unit Number 3 is assigned         W8           Closed
      to floppy drive

     Motor On signal normal                   W14            Open

      Motor On signal forced high              W14           Closed

     Floppy drive not always considered       W15            Open
      ready

      Floppy drive always considered           W15           Closed
      ready

     Factory configured - do not alter        W31            Open

     Factory configured - do not alter        W32          Pins 1 & 2
                                                             closed

                           SASI BUS ADDRESS SELECTION

  Setting   W0/A     W0/B     W0/C     W0/D     W0/E    W0/F     W0/G     W0/H

      0    Closed   Open     Open     Open     Open    Open     Open     Open

       1    Open    Closed    Open     Open     Open    Open     Open     Open

       2    Open     Open    Closed    Open     Open    Open     Open     Open

       3    Open     Open     Open    Closed    Open    Open     Open     Open

       4    Open     Open     Open     Open    Closed   Open     Open     Open

       5    Open     Open     Open     Open     Open    Closed   Open     Open

       6    Open     Open     Open     Open     Open    Open     Closed   Open

       7    Open     Open     Open     Open     Open    Open     Open     Closed

                           SECTOR SIZE SELECTION

          Setting                     W3                      W4

            128 bytes                Open                    Open

           256 bytes               Closed                   Open

            512 bytes                Open                   Closed

           1024 bytes               Closed                  Closed

