UNIDENTIFIED
PRECISION 286 TURBO
| 
 Processor  | 
 80286 (exact location unidentified)  | 
| 
 Processor Speed  | 
 10/12MHz  | 
| 
 Chip Set  | 
 VLSI  | 
| 
 Max. Onboard DRAM  | 
 4MB  | 
| 
 Cache  | 
 None  | 
| 
 BIOS  | 
 AMI/Award/Phoenix  | 
| 
 Dimensions  | 
 330mm x 218mm  | 
| 
 I/O Options  | 
 None  | 
| 
 NPU Options  | 
 80287 (exact location unidentified)  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 External battery  | 
 J13  | 
 Turbo LED  | 
 CN22  | 
| 
 Speaker  | 
 J23  | 
 Reset switch  | 
 CN23  | 
| 
 Turbo switch  | 
 CN20  | 
 Power LED & keylock  | 
 CN24  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper  | 
 Position  | |
| 
 Monitor type select color  | 
 J3  | 
 Closed  | |
| 
 Monitor type select monochrome  | 
 J3  | 
 Open  | |
| 
 Wait state select 0 wait states  | 
 J11  | 
 Closed  | |
| 
 Wait state select 1 wait state  | 
 J11  | 
 Open  | |
| 
 Parity enabled  | 
 J12  | 
 Closed  | |
| 
 Parity disabled  | 
 J12  | 
 Open  | |
| 
 DRAM CONFIGURATION  | |||||
| 
 Size  | 
 Bank 0  | 
 Bank 0A  | 
 Bank 0B  | 
 Bank 1  | 
 Bank 1A  | 
| 
 512KB  | 
 (8) 41256  | 
 NONE  | 
 NONE  | 
 (8) 41256  | 
 NONE  | 
| 
 512KB  | 
 NONE  | 
 (2) 44256  | 
 NONE  | 
 NONE  | 
 (2) 44256  | 
| 
 640KB  | 
 (8) 41256  | 
 NONE  | 
 NONE  | 
 (8) 41256  | 
 NONE  | 
| 
 640KB  | 
 NONE  | 
 (2) 44256  | 
 NONE  | 
 NONE  | 
 (2) 44256  | 
| 
 1MB  | 
 (8) 41256  | 
 NONE  | 
 NONE  | 
 (8) 41256  | 
 NONE  | 
| 
 1MB  | 
 NONE  | 
 (2) 44256  | 
 NONE  | 
 NONE  | 
 (2) 44256  | 
| 
 2MB  | 
 (8) 411000  | 
 NONE  | 
 NONE  | 
 (8) 411000  | 
 NONE  | 
| 
 4MB  | 
 (8) 411000  | 
 NONE  | 
 NONE  | 
 (8) 411000  | 
 NONE  | 
| 
 DRAM CONFIGURATION (CON’T)  | |||||
| 
 Size  | 
 Bank 1B  | 
 Bank 2  | 
 Bank 2A  | 
 Bank 3  | 
 Bank 3A  | 
| 
 512KB  | 
 NONE  | 
 NONE  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 512KB  | 
 NONE  | 
 NONE  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 640KB  | 
 NONE  | 
 (8) 4164  | 
 NONE  | 
 (8) 4164  | 
 NONE  | 
| 
 640KB  | 
 NONE  | 
 NONE  | 
 (2) 4464  | 
 NONE  | 
 (2) 4464  | 
| 
 1MB  | 
 NONE  | 
 (8) 41256  | 
 NONE  | 
 (8) 41256  | 
 NONE  | 
| 
 1MB  | 
 NONE  | 
 NONE  | 
 (2) 44256  | 
 NONE  | 
 (2) 44256  | 
| 
 2MB  | 
 NONE  | 
 NONE  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 4MB  | 
 NONE  | 
 (8) 411000  | 
 NONE  | 
 (8) 411000  | 
 NONE  | 
| 
 Note: See table below for parity configuration.  | |||||
| 
 DRAM PARITY CONFIGURATION  | ||||
| 
 Size  | 
 P 0  | 
 P 1  | 
 P 2  | 
 P 3  | 
| 
 512KB  | 
 (1) 41256  | 
 (1) 41256  | 
 NONE  | 
 NONE  | 
| 
 512KB  | 
 NONE  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 640KB  | 
 (1) 41256  | 
 (1) 41256  | 
 (1) 4164  | 
 (1) 4164  | 
| 
 640KB  | 
 NONE  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 1MB  | 
 (1) 41256  | 
 (1) 41256  | 
 (1) 41256  | 
 (1) 41256  | 
| 
 1MB  | 
 NONE  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 DRAM CONFIGURATION (SIMM)  | ||
| 
 Size  | 
 Bank 0B  | 
 Bank 1B  | 
| 
 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  | 
| 
 DRAM JUMPER CONFIGURATION  | |||
| 
 Size  | 
 J6  | 
 J7  | 
 J8  | 
| 
 512KB  | 
 Closed  | 
 Closed  | 
 Closed  | 
| 
 640KB  | 
 Closed  | 
 Closed  | 
 Open  | 
| 
 1MB  | 
 Closed  | 
 Open  | 
 Closed  | 
| 
 2MB  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 4MB  | 
 Open  | 
 Closed  | 
 Closed  |