LAVA COMPUTER MANUFACTURING, INC.
LAVA DSERIAL-550
| 
 Card Type  | 
 Serial card  | 
| 
 Chip Set  | 
 Unidentified  | 
| 
 Maximum Onboard Memory  | 
 N/A  | 
| 
 I/O Options  | 
 Serial ports (2)  | 
| 
 Hard Drives supported  | 
 None  | 
| 
 Floppy drives supported  | 
 None  | 
| 
 Data Bus  | 
 16-bit ISA  | 
| 
 Card Size  | 
 Half-length, full-height  | 
| 
 CONNECTIONS  | |||
| 
 Function  | 
 Label  | 
 Function  | 
 Label  | 
| 
 Serial port 1  | 
 CN1  | 
 Serial port 2  | 
 CN2  | 
| 
 SERIAL PORT 1 CONFIGURATION  | ||||
| 
 Setting  | 
 JP1/pins 1 & 2  | 
 JP1/pins 2 & 3  | 
 JP1/pins 4 & 5  | 
 JP1/pins 5 & 6  | 
| 
 COM1  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
| 
 COM2  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 COM3  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
| 
 COM4  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 SERIAL PORT 2 CONFIGURATION  | ||||
| 
 Setting  | 
 JP2/pins 1 & 2  | 
 JP2/pins 2 & 3  | 
 JP2/pins 4 & 5  | 
 JP2/pins 5 & 6  | 
| 
 COM1  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
| 
 COM2  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 COM3  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
| 
 COM4  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 SERIAL PORT 1 INTERRUPT SELECTION  | |||||||||
| 
 
 Setting  | 
 JP3/ pins 2 & 3  | 
 JP4/ pins 2 & 3  | 
 JP5/ pins 2 & 3  | 
 JP6/ pins 2 & 3  | 
 JP7/ pins 2 & 3  | 
 JP8/ pins 2 & 3  | 
 JP9/ pins 2 & 3  | 
 JP10/ pins 2 & 3  | 
 JP11/ pins 2 & 3  | 
| 
 IRQ2  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 IRQ3  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 IRQ4  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 IRQ5  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 IRQ7  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 IRQ10  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
| 
 IRQ11  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 IRQ12  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
| 
 IRQ15  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 SERIAL PORT 2 INTERRUPT SELECTION  | |||||||||
| 
 
 Setting  | 
 JP3/ pins 1 & 2  | 
 JP4/ pins 1 & 2  | 
 JP5/ pins 1 & 2  | 
 JP6/ pins 1 & 2  | 
 JP7/ pins 1 & 2  | 
 JP8/ pins 1 & 2  | 
 JP9/ pins 1 & 2  | 
 JP10/ pins 1 & 2  | 
 JP11/ pins 1 & 2  | 
| 
 IRQ2  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 IRQ3  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 IRQ4  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 IRQ5  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 IRQ7  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 IRQ10  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  | 
| 
 IRQ11  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 IRQ12  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
| 
 IRQ15  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  |