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 |