I-BUS
LB486SLC
| 
 Processor  | 
 CX486SLC  | 
| 
 Processor Speed  | 
 33MHz  | 
| 
 Chip Set  | 
 OPTI  | 
| 
 Max. Onboard DRAM  | 
 16MB  | 
| 
 Cache  | 
 128KB  | 
| 
 BIOS  | 
 Unidentified  | 
| 
 Dimensions  | 
 300mm x 89mm  | 
| 
 I/O Options  | 
 Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA port  | 
| 
 NPU Options  | 
 80387SX  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Speaker  | 
 J3  | 
 Parallel port  | 
 J15  | 
| 
 Reset switch  | 
 J4  | 
 Serial port 1  | 
 J16  | 
| 
 PS/2 mouse port  | 
 J6  | 
 Serial port 2  | 
 J17  | 
| 
 Auxiliary keyboard connector  | 
 J7  | 
 IDE interface LED  | 
 J18  | 
| 
 Floppy drive interface  | 
 J13  | 
 VGA port  | 
 J22  | 
| 
 IDE interface  | 
 J14  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper  | 
 Position  | |
| 
 »  | 
 Factory configured - do not alter  | 
 J1  | 
 Closed  | 
| 
 »  | 
 Factory configured - do not alter  | 
 J2  | 
 Closed  | 
| 
 »  | 
 Battery type select internal  | 
 J8  | 
 pins 2 & 3 closed  | 
| 
 CMOS memory clear  | 
 J8  | 
 pins 1 & 2 closed  | |
| 
 IDE IRQ14 enabled  | 
 J12  | 
 Closed  | |
| 
 IDE IRQ14 disabled  | 
 J12  | 
 Open  | |
| 
 VGA IRQ9 enabled  | 
 J23  | 
 Closed  | |
| 
 VGA IRQ9 disabled  | 
 J23  | 
 Open  | |
| 
 On board video disabled  | 
 J24  | 
 pins 1 & 2 closed  | |
| 
 On board video enabled  | 
 J24  | 
 pins 2 & 3 closed  | |
| 
 Password enabled  | 
 J25  | 
 Closed  | |
| 
 Password disabled  | 
 J25  | 
 Open  | |
| 
 DRAM CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 512KB  | 
 (2) 256K x 9  | 
 NONE  | 
| 
 1MB  | 
 (2) 256K x 9  | 
 (2) 256K x 9  | 
| 
 2MB  | 
 (2) 1M x 9  | 
 NONE  | 
| 
 4MB  | 
 (2) 1M x 9  | 
 (2) 1M x 9  | 
| 
 8MB  | 
 (2) 4M x 9  | 
 NONE  | 
| 
 16MB  | 
 (2) 4M x 9  | 
 (2) 4M x 9  | 
| 
 CACHE CONFIGURATION  | 
| 
 Note: 128KB cache is factory installed and is not configurable.  | 
| 
 PARALLEL PORT IRQ CONFIGURATION  | |
| 
 IRQ  | 
 J21  | 
| 
 IRQ3  | 
 pins 3 & 4 closed  | 
| 
 IRQ4  | 
 pins 5 & 6 closed  | 
| 
 IRQ5  | 
 pins 7 & 8 closed  | 
| 
 IRQ7  | 
 pins 9 & 10 closed  | 
| 
 IRQ12  | 
 pins 1 & 2 closed  | 
| 
 SERIAL PORT 1 IRQ CONFIGURATION  | |
| 
 IRQ  | 
 J20  | 
| 
 IRQ3  | 
 pins 3 & 4 closed  | 
| 
 IRQ4  | 
 pins 5 & 6 closed  | 
| 
 IRQ5  | 
 pins 7 & 8 closed  | 
| 
 IRQ7  | 
 pins 9 & 10 closed  | 
| 
 IRQ12  | 
 pins 1 & 2 closed  | 
| 
 SERIAL PORT 2 IRQ CONFIGURATION  | |
| 
 IRQ  | 
 J19  | 
| 
 IRQ3  | 
 pins 3 & 4 closed  | 
| 
 IRQ4  | 
 pins 5 & 6 closed  | 
| 
 IRQ5  | 
 pins 7 & 8 closed  | 
| 
 IRQ7  | 
 pins 9 & 10 closed  | 
| 
 IRQ12  | 
 pins 1 & 2 closed  |