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