ROLAND CORPORATION

LAPC-1

Card Type          Sound Card
Chipset/Controller Roland
I/O Options        Line out, MIDI port, speaker jack
Maximum DRAM       N/A

[Image]

                               CONNECTIONS

         Purpose           Location          Purpose           Location

  MIDI port                   CN1      Line out (left)           CN3

  Line out (right)            CN2      Speaker jack              CN4

                         I/O ADDRESS CONFIGURATION

  Data Port Address     Command Port           J7               J8
                          Address

  »      330h (for          331h           Pins 1 & 2        Pins 1 & 2
         Board 1)                            closed           closed

         332h (for          333h           Pins 1 & 2        Pins 2 & 3
         Board 2)                            closed           closed

         334h (for          335h           Pins 2 & 3        Pins 1 & 2
         Board 3)                            closed           closed

         336h (for          337h           Pins 2 & 3        Pins 2 & 3
         Board 4)                            closed           closed

       Note:Multiple LAPC-1 cards in the same system can only function
       with software which is capable of controlling multiple MPU-401
       interfaces.

                             INTERRUPT SELECT

    IRQ         J1         J2        J3        J4        J5         J6

  »   IRQ2    Closed      Open      Open      Open      Open       Open

      IRQ3     Open       Open      Open      Open      Open      Closed

      IRQ4     Open       Open      Open      Open     Closed      Open

      IRQ5     Open       Open      Open     Closed     Open       Open

      IRQ6     Open       Open     Closed     Open      Open       Open

      IRQ7     Open      Closed     Open      Open      Open       Open

       Note:These settings apply when all jumpers in the interrupt jumper
       block other than the one designated as closed are left open.