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# LAVA COMPUTER MANUFACTURING, INC.
VL-550
Data Bus 32-bit VESA Local Bus
Card Size Three-quarter length, full-height card
Hard Drives Four EIDE (AT) drives
supported
Floppy drives Two 360KB, 720KB, 1.2MB, or 1.44MB drives
supported
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location | Function | Location |
|-------------------+----------+------------------+----------|
| 9-pin serial port | CN1 | 40-pin primary | CN5 |
| 1 - external | | EIDE(AT) | |
| | | connector | |
|-------------------+----------+------------------+----------|
| 25-pin parallel | CN2 | 4-pin connector | CN6 |
| port - external | | - drive active | |
| | | LED | |
|-------------------+----------+------------------+----------|
| 25-pin serial | CN3 | 40-pin secondary | CN7 |
| port 2 - internal | | EIDE(AT) | |
| | | connector | |
|-------------------+----------+------------------+----------|
| 34-pin cable | CN4 | | |
| connector - | | | |
| 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 | Pins 2 & 3 closed | Pins 2 & 3 closed |
| disk mode | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA BUS I/O DELAY MODE SELECTION |
|------------------------------------------------------------|
| Setting | JP20 | JP21 |
|--------------------+-------------------+-------------------|
| PIO mode 0 - | Pins 1 & 2 closed | Pins 1 & 2 closed |
| 600nsec | | |
|--------------------+-------------------+-------------------|
| PIO mode 1 - | Pins 2 & 3 closed | Pins 1 & 2 closed |
| 500nsec | | |
|--------------------+-------------------+-------------------|
| PIO mode 2 - | Pins 1 & 2 closed | Pins 2 & 3 closed |
| 400nsec | | |
|--------------------+-------------------+-------------------|
| PIO mode 3 - | Pins 2 & 3 closed | Pins 2 & 3 closed |
| 240nsec | | |
+------------------------------------------------------------+