SONY CORPORATION

CDU-31A ADAPTER BOARD

Card Type               CD-ROM drive controller card
Chipset                 Unidentified
Maximum onboard memory  Unidentified
I/O options             CD-ROM audio in, line out
Hard Drives supported   None
Floppy drives supported None
Data Bus                8-bit ISA
Card Size               Half-length, full-height card

[Image]

                                CONNECTIONS

        Function          Location          Function           Location

  34-pin proprietary        CN1       Line out                    CN3
  CD-ROM interface -
  internal

  Audio in - CD-ROM         CN2       50-pin proprietary          CN4
                                      CD-ROM connector -
                                      external

                        USER CONFIGURABLE SETTINGS

                  Function                      Label        Position

  »   Factory configured - do not alter         JP1/C        Reserved

  »   Factory configured - do not alter         JP1/D        Reserved

  »   Factory configured - do not alter         JP2/D        Reserved

  »   Factory configured - do not alter         JP3/D        Reserved

                         DMA CHANNEL SELECTION

  Channel    JP2/A     JP2/B     JP2/C     JP3/A     JP3/B     JP3/C

     1         On       Off       Off        On       Off       Off

     2        Off        On       Off       Off        On       Off

     3        Off       Off        On       Off       Off        On

             INTERRUPT SELECTION

    IRQ      JP4/A   JP4/B    JP4/C   JP4/D

     3       Off      Off      On      Off

     4       Off      On      Off      On

     5        On      Off     Off      Off

     6       Off      On      Off      Off

   BASE I/O ADDRESS SELECTION

  Address    JP1/A      JP1/B

   320h      Closed    Closed

   330h      Closed     Open

   340h       Open     Closed

   360h       Open      Open