
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

