INFORMTECH INTERNATIONAL, INC.
286/SUPRA (MODEL C)
| 
 Processor  | 
 80286  | 
| 
 Processor Speed  | 
 6/8/10/12/16/20MHz  | 
| 
 Chip Set  | 
 C & T  | 
| 
 Max. Onboard DRAM  | 
 2MB  | 
| 
 SRAM Cache  | 
 None  | 
| 
 BIOS  | 
 Award  | 
| 
 Dimensions  | 
 330mm x 218mm  | 
| 
 I/O Options  | 
 16-bit external memory card slot, auxillary keyboard connector  | 
| 
 NPU Options  | 
 80287  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Auxiliary keyboard  | 
 J9  | 
 Power LED & keylock  | 
 P5  | 
| 
 Turbo LED  | 
 P2  | 
 External battery  | 
 P8  | 
| 
 Speaker  | 
 P3  | 
 16-bit external memory card  | 
 S1  | 
| 
 Reset switch  | 
 P4  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper/Switch  | 
 Position  | |
| 
 BIOS type select 27256  | 
 J4  | 
 pins 2 & 3 closed  | |
| 
 BIOS type select 27128  | 
 J4  | 
 pins 1 & 2 closed  | |
| » | 
 Keyboard controller clock speed select 6MHz  | 
 J5  | 
 pins 1 & 2 closed  | 
| 
 Keyboard controller clock speed select 12MHz  | 
 J5  | 
 pins 2 & 3 closed  | |
| 
 Battery type select Alkaline 4.5VDC  | 
 J7  | 
 closed  | |
| 
 Battery type select Lithium 6VDC  | 
 J7  | 
 open  | |
| » | 
 Power good signal detect from power supply  | 
 J8  | 
 pins 2 & 3 closed  | 
| 
 Power good signal detect from board  | 
 J8  | 
 pins 1 & 2 closed  | |
| 
 Monitor type select color  | 
 SW1/Switch 3  | 
 closed  | |
| 
 Monitor type select monochrome  | 
 SW1/Switch 3  | 
 open  | |
| 
 CPU SPEED/BUS CLOCK CONFIGURATION  | ||||||
| 
 
 CPU Speed  | 
 AT Bus Speed  | 
 
 J2  | 
 
 J3  | 
 
 J10  | 
 
 J13  | 
 
 J14  | 
| 
 20MHz  | 
 8MHz  | 
 pins 1 & 2  | 
 pins 1 & 2  | 
 pins 2 & 3  | 
 open  | 
 open  | 
| 
 20MHz  | 
 10MHz  | 
 N/A  | 
 pins 1 & 2  | 
 pins 2 & 3  | 
 closed  | 
 open  | 
| 
 20MHz  | 
 12MHz  | 
 pins 2 & 3  | 
 pins 1 & 2  | 
 pins 2 & 3  | 
 open  | 
 open  | 
| 
 16MHz  | 
 8MHz  | 
 pins 1 & 2  | 
 pins 1 & 2  | 
 pins 1 & 2  | 
 open  | 
 open  | 
| 
 16MHz  | 
 12MHz  | 
 pins 2 & 3  | 
 pins 1 & 2  | 
 pins 1 & 2  | 
 open  | 
 open  | 
| 
 12MHz  | 
 6MHz  | 
 N/A  | 
 pins 2 & 3  | 
 N/A  | 
 closed  | 
 open  | 
| 
 12MHz  | 
 8MHz  | 
 pins 1 & 2  | 
 pins 2 & 3  | 
 N/A  | 
 open  | 
 open  | 
| 
 12MHz  | 
 12MHz  | 
 pins 2 & 3  | 
 N/A  | 
 N/A  | 
 open  | 
 closed  | 
| 
 10MHz  | 
 10MHz  | 
 N/A  | 
 pins 1 & 2  | 
 pins 2 & 3  | 
 closed  | 
 closed  | 
| 
 8MHz  | 
 8MHz  | 
 pins 1 & 2  | 
 N/A  | 
 N/A  | 
 open  | 
 closed  | 
| 
 6MHz  | 
 6MHz  | 
 N/A  | 
 pins 2 & 3  | 
 N/A  | 
 closed  | 
 closed  | 
| 
 Note:Pins designated should be in the closed position.  | ||||||
| 
 NPU CLOCK RATE CONFIGUARATION  | |||
| 
 NPU  | 
 Clock Rate  | 
 SW1/Switch 1  | 
 SW1/Switch 2  | 
| 
 80287-8  | 
 6MHz  | 
 closed  | 
 closed  | 
| 
 80287-8  | 
 8MHz  | 
 open  | 
 closed  | 
| 
 80287-10  | 
 10MHz  | 
 closed  | 
 open  | 
| 
 80287-12  | 
 12MHz  | 
 open  | 
 open  | 
| 
 DRAM CONFIGURATION  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 J11  | 
 J12  | 
| 
 512KB  | 
 (18) 41256  | 
 NONE  | 
 open  | 
 open  | 
| 
 1MB  | 
 (18) 41256  | 
 (18) 41256  | 
 closed  | 
 open  | 
| 
 2MB  | 
 (18) 411000  | 
 NONE  | 
 open  | 
 closed  | 
| 
 4MB  | 
 (18) 411000  | 
 (18) 411000  | 
 closed  | 
 closed  |