UNIDENTIFIED

B237

  Data bus:                  16-bit, ISA

  Size:                      Half-length, full-height card

  Hard drive supported:      Two IDE (AT) Interface drives

  Floppy drives supported:   Two 360KB, 720KB, 1.2MB, or 1.44MB drives

[Image]

                              CONNECTIONS

                    Function                           Location

  25-pin parallel port (LPT1/2) - external                CN1

  15-pin game port - external                             CN2

  10-pin serial port (COM1/3) - internal                  CN3

  10-pin serial port (COM2/4) - internal                  CN4

  34-pin control cable connector - floppy drive           CN5

  40-pin IDE (AT) Interface connector                     CN6

  4-pin connector - drive active LED                      CN7

                    PARALLEL PORT ADDRESS

       Setting               JP3                  JP4

        3BCh           pins 2 & 3 closed   pins 1 & 2 closed

        378h           pins 1 & 3 closed   pins 1 & 2 closed

        278h           pins 1 & 2 closed   pins 2 & 3 closed

       Disable         pins 2 & 3 closed   pins 2 & 3 closed

                          SERIAL PORTS COM SELECT

   Serial 1      Serial 2         JP5            JP6             JP7

     COM1          COM2        pins 1 & 2     pins 1 & 2      pins 1 & 2
                                 closed         closed         closed

     COM2          COM1        pins 1 & 2     pins 1 & 2      pins 2 & 3
                                 closed         closed         closed

                     FLOPPY DRIVE SELECT

       Setting               JP8                  JP9

       Enabled         pins 1 & 2 closed   pins 1 & 2 closed

      Disabled         pins 2 & 3 closed   pins 2 & 3 closed