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VL-550

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

   

CONNECTIONS

Function

Location

Function

Location

9-pin serial port 1 - external

CN1

40-pin primary EIDE(AT) connector

CN5

25-pin parallel port - external

CN2

4-pin connector - drive active LED

CN6

25-pin serial port 2 - internal

CN3

40-pin secondary EIDE(AT) connector

CN7

34-pin cable connector - floppy drive

CN4

   

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