UNIDENTIFIED
S 286 SYSTEM BOARD
| 
 Processor  | 
 80286  | 
| 
 Processor Speed  | 
 6/10/12/16MHz  | 
| 
 Chip Set  | 
 VLSI  | 
| 
 Video Chip Set  | 
 None  | 
| 
 Maximum Onboard Memory  | 
 4MB  | 
| 
 Maximum Video Memory  | 
 None  | 
| 
 Cache  | 
 None  | 
| 
 BIOS  | 
 Award/Phoenix  | 
| 
 Dimensions  | 
 330mm x 218mm  | 
| 
 I/O Options  | 
 None  | 
| 
 NPU Options  | 
 80287  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Speaker  | 
 J19  | 
 Turbo switch  | 
 JP4  | 
| 
 Power LED & keylock  | 
 J20  | 
 Turbo LED  | 
 JP5  | 
| 
 External battery  | 
 J21  | 
 Reset switch  | 
 JP6  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Label  | 
 Position  | |
| 
 »  | 
 Factory configured - do not alter  | 
 DSP/2  | 
 On  | 
| 
 EMS port address select 0E8H - 0EFH  | 
 DSP/4  | 
 On  | |
| 
 EMS port address select 098H - 09FH  | 
 DSP/4  | 
 Off  | |
| 
 »  | 
 Factory configured - do not alter  | 
 JP2  | 
 Unidentified  | 
| 
 BIOS type select Phoenix  | 
 JP7  | 
 Pins 1 & 2 closed  | |
| 
 BIOS type select Award  | 
 JP7  | 
 Pins 2 & 3 closed  | |
| 
 EMS type select extended mode  | 
 JP8  | 
 Open  | |
| 
 EMS type select expanded mode  | 
 JP8  | 
 Closed  | |
| 
 »  | 
 Factory configured - do not alter  | 
 JP10  | 
 Unidentified  | 
| 
 Wait state select 1 wait state  | 
 JP11  | 
 Pins 1 & 2 closed  | |
| 
 Wait state select 0 wait states  | 
 JP11  | 
 Pins 2 & 3 closed  | |
| 
 Monitor type select monochrome  | 
 SW1  | 
 Pins 1 & 2 closed  | |
| 
 Monitor type select color  | 
 SW1  | 
 Pins 2 & 3 closed  | |
| 
 DRAM CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 512KB  | 
 (18) 41256  | 
 None  | 
| 
 640KB  | 
 (18) 41256  | 
 (18) 4164  | 
| 
 1MB  | 
 (18) 41256  | 
 (18) 41256  | 
| 
 1MB (EMS)  | 
 (18) 41256  | 
 (18) 41256  | 
| 
 2MB  | 
 (18) 411000  | 
 None  | 
| 
 2MB (EMS)  | 
 (18) 411000  | 
 None  | 
| 
 4MB  | 
 (18) 411000  | 
 (18) 411000  | 
| 
 4MB (EMS)  | 
 (18) 411000  | 
 (18) 411000  | 
| 
 DRAM SWITCH CONFIGURATION  | |||
| 
 Size  | 
 DSP/6  | 
 DSP/7  | 
 DSP/8  | 
| 
 512KB  | 
 On  | 
 On  | 
 On  | 
| 
 640KB  | 
 On  | 
 On  | 
 Off  | 
| 
 1MB  | 
 On  | 
 Off  | 
 On  | 
| 
 1MB (EMS)  | 
 On  | 
 Off  | 
 Off  | 
| 
 2MB  | 
 Off  | 
 On  | 
 On  | 
| 
 2MB (EMS)  | 
 Off  | 
 On  | 
 Off  | 
| 
 4MB  | 
 Off  | 
 Off  | 
 On  | 
| 
 4MB (EMS)  | 
 Off  | 
 Off  | 
 Off  | 
| 
 DRAM JUMPER CONFIGURATION  | |
| 
 Size  | 
 J18  | 
| 
 256KB  | 
 Pins 1 & 2 closed  | 
| 
 512KB  | 
 Pins 2 & 3 closed  | 
| 
 CLOCK SPEED SELECTION  | ||
| 
 Speed  | 
 DSP/1  | 
 JP1  | 
| 
 Low  | 
 On  | 
 Pins 2 & 3 closed  | 
| 
 High  | 
 Off  | 
 Pins 2 & 3 closed  | 
| 
 Keyboard controlled  | 
 N/A  | 
 Pins 1 & 2 closed  | 
| 
 BIOS SELECTION  | ||
| 
 Size  | 
 JP9  | 
 DSP/5  | 
| 
 27128  | 
 Pins 1 & 2 closed  | 
 On  | 
| 
 27256  | 
 Pins 2 & 3 closed  | 
 Off  | 
| 
 I/O WAIT STATE SELECTION  | ||
| 
 Wait states  | 
 DSP/3  | 
 JP3  | 
| 
 4  | 
 On  | 
 Pins 2 & 3 closed  | 
| 
 6  | 
 Off  | 
 Pins 2 & 3 closed  | 
| 
 Keyboard controlled  | 
 N/A  | 
 Pins 1 & 2 closed  |