UNIDENTIFIED
VLSI-286
| 
 Processor  | 
 80286  | 
| 
 Processor Speed  | 
 12MHz  | 
| 
 Chip Set  | 
 VLSI  | 
| 
 Max. Onboard DRAM  | 
 4MB  | 
| 
 Cache  | 
 None  | 
| 
 BIOS  | 
 Unidentified  | 
| 
 Dimensions  | 
 330mm x 218mm  | 
| 
 I/O Options  | 
 None  | 
| 
 NPU Options  | 
 80287  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 External battery  | 
 J3  | 
 Turbo switch  | 
 J20  | 
| 
 Speaker  | 
 J18  | 
 Power LED & keylock  | 
 J21  | 
| 
 Reset switch  | 
 J19  | 
 Turbo LED  | 
 J22  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper  | 
 Position  | |
| » | 
 Monitor type select color  | 
 JP1  | 
 Closed  | 
| 
 Monitor type select monochrome  | 
 JP1  | 
 Open  | |
| » | 
 Battery type select internal  | 
 J3  | 
 pins 2 & 3 closed  | 
| 
 Battery type select external  | 
 J3  | 
 Closed  | |
| » | 
 BIOS wait state select 1 wait state  | 
 JP6  | 
 Open  | 
| 
 BIOS wait states select 2 wait states  | 
 JP6  | 
 Closed  | |
| » | 
 Oscillator select Y2  | 
 JP9  | 
 pins 1 & 2 closed  | 
| 
 Oscillator select Y1  | 
 JP9  | 
 pins 2 & 3 closed  | |
| » | 
 BIOS type select 27256  | 
 JP14  | 
 Closed  | 
| 
 BIOS type select 27128  | 
 JP14  | 
 Open  | |
| » | 
 DRAM wait state select 0 wait states  | 
 JP13  | 
 Closed  | 
| 
 DRAM wait state select 1 wait states  | 
 JP13  | 
 Open  | |
| » | 
 CPU speed select switchable at keyboard  | 
 J20  | 
 pins 1 & 2 closed  | 
| 
 CPU speed select forced high  | 
 J20  | 
 pins 2 & 3 closed  | |
| 
 DRAM CONFIGURATION  | ||||||
| 
 Size  | 
 Bank 0  | 
 P-0  | 
 Bank 1  | 
 P-1  | 
 Bank 2  | 
 Bank 3  | 
| 
 512KB  | 
 (4) 44256  | 
 (2) 41256  | 
 NONE  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 640KB  | 
 (4) 44256  | 
 (2) 41256  | 
 (16) 4164  | 
 (2) 4164  | 
 NONE  | 
 NONE  | 
| 
 1MB  | 
 (4) 44256  | 
 (2) 41256  | 
 NONE  | 
 (2) 41256  | 
 (4) 44256  | 
 NONE  | 
| 
 2MB  | 
 NONE  | 
 (2) 411000  | 
 NONE  | 
 NONE  | 
 NONE  | 
 (16) 411000  | 
| 
 4MB  | 
 NONE  | 
 (2) 411000  | 
 (16) 411000  | 
 (2) 411000  | 
 NONE  | 
 (16) 411000  | 
| 
 DRAM JUMPER CONFIGURATION  | |||
| 
 Size  | 
 JP3  | 
 JP4  | 
 JP5  | 
| 
 512KB  | 
 Closed  | 
 Closed  | 
 Closed  | 
| 
 640KB  | 
 Closed  | 
 Closed  | 
 Open  | 
| 
 1MB  | 
 Closed  | 
 Open  | 
 Closed  | 
| 
 2MB  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 4MB  | 
 Open  | 
 Closed  | 
 Closed  |