IBM CORPORATION

EASY OPTIONS PROFESSIONAL AUDIO CARD AC523, EASY OPTIONS SOUND CARD CD651

Card Type                  Sound card
Chip Set                   Unidentified
Maximum Onboard Memory     N/A
I/O Options                Audio extension connector, CD-ROM audio, CD-ROM
                           interface, game/MIDI port, line in, microphone
                           in, MIDI extension connector, PC speaker,
                           speaker out, volume
Data Bus                   16-bit ISA
Floppy drives supported    N/A

[Image]

                                CONNECTIONS

          Function            Label            Function            Label

  Game/MIDI port               CN1    MIDI extension connector      CN6

  Audio extension connector    CN2    Line in                        J1

  CD-ROM interface             CN3    Mic in                         J2

  PC speaker                   CN4    Speaker out                    J3

  CD - audio in                CN5    Volume                        VR1

                        USER CONFIGURABLE SETTINGS

                  Function                      Label        Position

  »   Game port enabled                         JYEN          Closed

      Game port disabled                        JYEN           Open

  »   MIDI base address is 330h                 MSEL          Closed

      MIDI base address is 300h                 MSEL           Open

                     AUDIO BASE I/O ADDRESS SELECTION

          Address                   IOS0                    IOS1

  »          220h                  Closed                  Closed

             240h                   Open                   Closed

             260h                  Closed                   Open

             280h                   Open                    Open

                            INTERRUPT SELECTION

           IRQ                      IS0                      IS1

              2/9                  Closed                  Closed

  »            5                    Open                   Closed

               7                   Closed                   Open

              10                    Open                    Open

                        8-BIT DMA CHANNEL SELECTION

         Channel                   DAS0                     DAS1

              0                   Closed                   Closed

  »           1                    Open                    Closed

              3                   Closed                    Open

                       16-BIT DMA CHANNEL SELECTION

         Channel                   DBS0                     DBS1

  »           5                   Closed                   Closed

              6                    Open                    Closed

              7                   Closed                    Open

                  AUDIO INTERNAL AMPLIFIER CONFIGURATION

           Setting                    OPSL                   OPSR

            Disabled           Pins 1 & 2 closed      Pins 1 & 2 closed

  »          Enabled           Pins 2 & 3 closed      Pins 2 & 3 closed