LAVA COMPUTER MFG, INC. LAVA 2SP-550 Card Type Multi I/O Chipset Controller 16450/16550 UART I/O Options Parallel port, Serial ports (2) Maximum Dram N/A [Image] CONNECTIONS Purpose Location Purpose Location 25-pin Parallel CN1 Serial port 2 CN3 port internal Serial port 1 CN2 SERIAL PORT 1 CONFIGURATION COM JP1/B JP1/A COM1 Pins 1 & 2 closed All open COM2 Pins 2 & 3 closed All open COM3 All open Pins 1 & 2 closed COM4 All open Pins 2 & 3 closed SERIAL PORT 2 CONFIGURATION COM JP2/B JP2/A COM1 Pins 2 & 3 closed All open COM2 Pins 1 & 2 closed All open COM3 All open Pins 2 & 3 closed COM4 All open Pins 1 & 2 closed SERIAL PORT 1 INTERRUPT SELECT Setting JP3 JP4 JP5 JP6 IRQ13 Pins 1 & 2 All open All open All open closed IRQ12 All open Pins 1 & 2 All open All open closed IRQ11 All open All open Pins 1 & 2 All open closed IRQ10 All open All open All open Pins 1 & 2 closed SERIAL PORT 1 INTERRUPT SELECT Setting JP7 JP8 JP9 JP10 IRQ5 Pins 1 & 2 All open All open All open closed IRQ2 All open Pins 1 & 2 All open All open closed IRQ4 All open All open Pins 1 & 2 All open closed IRQ3 All open All open All open Pins 1 & 2 closed SERIAL PORT 2 INTERRUPT SELECT Setting JP3 JP4 JP5 JP6 IRQ13 Pins 2 & 3 All open All open All open closed IRQ12 All open Pins 2 & 3 All open All open closed IRQ11 All open All open Pins 2 & 3 All open closed IRQ10 All open All open All open Pins 2 & 3 closed SERIAL PORT 2 INTERRUPT SELECT Setting JP7 JP8 JP9 JP10 IRQ5 Pins 2 & 3 All open All open All open closed IRQ2 All open Pins 2 & 3 All open All open closed IRQ4 All open All open Pins 2 & 3 All open closed IRQ3 All open All open All open Pins 2 & 3 closed PARALLEL PORT SELECT Port JP11/A LPT1 Pins 1 & 2 closed LPT2 Pins 2 & 3 closed PARALLEL PORT INTERRUPT SELECT IRQ JP11/B IRQ5 Pins 1 & 2 closed IRQ7 Pins 2 & 3 closed PARALLEL PORT DIRECTION SELECT Setting JP12 Bi-Directional Pins 1 & 2 closed Uni-Drectional Pins 2 & 3 closed