
LAVA COMPUTER MANUFACTURING, INC.

VL-550

Data Bus                32-bit VESA Local Bus
Card Size               Three-quarter length, full-height card
Hard Drives supported   Four EIDE (AT) drives
Floppy drives supported Two 360KB, 720KB, 1.2MB, or 1.44MB drives


[Image]

                                CONNECTIONS

        Function          Location           Function           Location

  9-pin serial port 1 -      CN1      40-pin primary              CN5
  external                            EIDE(AT) connector

  25-pin parallel port -     CN2      4-pin connector -           CN6
  external                            drive active LED

  25-pin serial port 2 -     CN3      40-pin secondary            CN7
  internal                            EIDE(AT) connector

  34-pin cable connector     CN4
  - floppy drive

  Note: 25-pin serial port 2 connector is attached via ribbon to 10-pin
  internal connector CN3.

                        USER CONFIGURABLE SETTINGS

                  Function                     Label         Position

  Floppy drive interface enabled                JP1         Pins 1 & 2
                                                              closed

  Floppy drive interface disabled               JP1         Pins 2 & 3
                                                              closed

  IOCHRDY signal disabled                       JP2            Open

  IOCHRDY signal enabled                        JP2           Closed

  Parallel port IRQ5 select                     JP5         Pins 1 & 2
                                                              closed

  Parallel port IRQ7 select                     JP5         Pins 2 & 3
                                                              closed

  Serial port 2 COM2 (2F8h) select              JP17        Pins 2 & 3
                                                              closed

  Serial port 2 COM4 (2E8h) select              JP17        Pins 1 & 2
                                                              closed

  Serial port 1 COM1 (3F8h) select              JP18        Pins 2 & 3
                                                              closed

  Serial port 1 COM3 (3E8h) select              JP18        Pins 1 & 2
                                                              closed

  IDE(AT) secondary interface enabled           JP22        Pins 2 & 3
                                                              closed

  IDE(AT) secondary interface disabled          JP22        Pins 1 & 2
                                                              closed

  VESA local bus speed 33 Mhz select            JP23        Pins 1 & 2
                                                              closed

  VESA local bus speed 50 Mhz select            JP23        Pins 2 & 3
                                                              closed

  IDE(AT) interface enabled                     JP24        Pins 2 & 3
                                                              closed

  IDE(AT) interface disabled                    JP24        Pins 1 & 2
                                                              closed

                    DMA CHANNEL SELECTION

       Channel               JP3                  JP4

          1            Pins 1 & 2 closed   Pins 1 & 2 closed

          3            Pins 2 & 3 closed   Pins 2 & 3 closed

               PARALLEL PORT ADDRESS SELECTION

       Setting               JP14                 JP15

     LPT1 (3BCh)       Pins 1 & 2 closed   Pins 1 & 2 closed

     LPT2 (378h)       Pins 2 & 3 closed   Pins 1 & 2 closed

     LPT3 (278h)       Pins 1 & 2 closed   Pins 2 & 3 closed

      Disabled         Pins 2 & 3 closed   Pins 2 & 3 closed

                     SERIAL PORT 1 INTERRUPT SELECTION

   IRQ      JP6     JP7     JP8     JP9     JP10    JP11    JP12    JP13

   IRQ2     Open    Open    2 & 3   Open    Open    Open    Open    Open

   IRQ3     2 & 3   Open    Open    Open    Open    Open    Open    Open

   IRQ4     Open    2 & 3   Open    Open    Open    Open    Open    Open

   IRQ5     Open    Open    Open    2 & 3   Open    Open    Open    Open

  IRQ10     Open    Open    Open    Open    2 & 3   Open    Open    Open

  IRQ11     Open    Open    Open    Open    Open    2 & 3   Open    Open

  IRQ12     Open    Open    Open    Open    Open    Open    2 & 3   Open

  IRQ15     Open    Open    Open    Open    Open    Open    Open   2 & 3

  Note: Designated pins should be in the closed position.

                     SERIAL PORT 2 INTERRUPT SELECTION

   IRQ      JP6     JP7     JP8     JP9     JP10    JP11    JP12    JP13

   IRQ2     Open    Open    1 & 2   Open    Open    Open    Open    Open

   IRQ3     1 & 2   Open    Open    Open    Open    Open    Open    Open

   IRQ4     Open    1 & 2   Open    Open    Open    Open    Open    Open

   IRQ5     Open    Open    Open    1 & 2   Open    Open    Open    Open

  IRQ10     Open    Open    Open    Open    1 & 2   Open    Open    Open

  IRQ11     Open    Open    Open    Open    Open    1 & 2   Open    Open

  IRQ12     Open    Open    Open    Open    Open    Open    1 & 2   Open

  IRQ15     Open    Open    Open    Open    Open    Open    Open   1 & 2

  Note: Designated pins should be in the closed position.

                       PARALLEL PORT MODE SELECTION

           Setting                    JP16                   JP19

       Uni-directional         Pins 1 & 2 closed      Pins 1 & 2 closed

             EPP               Pins 1 & 2 closed      Pins 2 & 3 closed

           EPP/ECP             Pins 2 & 3 closed      Pins 1 & 2 closed

  External floppy disk mode    Pins 2 & 3 closed      Pins 2 & 3 closed

                   VESA BUS I/O DELAY MODE SELECTION

        Setting                  JP20                    JP21

  PIO mode 0 - 600nsec     Pins 1 & 2 closed       Pins 1 & 2 closed

  PIO mode 1 - 500nsec     Pins 2 & 3 closed       Pins 1 & 2 closed

  PIO mode 2 - 400nsec     Pins 1 & 2 closed       Pins 2 & 3 closed

  PIO mode 3 - 240nsec     Pins 2 & 3 closed       Pins 2 & 3 closed

