EVEREX SYSTEMS, INC.
STEP 286
| Processor | 80286 | 
| Processor Speed | 12/16MHz | 
| Chip Set | C & T | 
| Max. Onboard DRAM | 4MB | 
| Cache | None | 
| BIOS | AMI | 
| Dimensions | 246mm x 216mm | 
| I/O Options | None | 
| NPU Options | 80287 | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Turbo LED | P1 | Speaker | P4 | 
| Turbo Switch | P2 | Power LED & Keylock | P5 | 
| Reset switch | P3 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper | Position | |
| » | Monitor type select monochrome | SW3 | Closed | 
| Monitor type select color | SW3 | Open | |
| » | DRAM access time 100ns | W2 | Closed | 
| DRAM access time 70ns | W2 | Open | |
| » | CPU select 0 wait states | W3 | Closed | 
| CPU select 1 wait state | W3 | Open | |
| » | Factory configured - do not alter | W4 - W11 | N/A | 
| » | DRAM access time 80ns | W15 | closed | 
| DRAM access time 60ns to 70ns | W15 | open | |
| Note:On 12MHz board W2 controls DRAM access time and W15 must remain closed. On 16MHz board W15 controls DRAM access time and W2 must remain open. | |||
| DRAM CONFIGURATION | ||
| Size | Bank 0 | Bank 1 | 
| 512KB | (18) 41256 | NONE | 
| 1MB | (18) 41256 | (18) 41256 | 
| 2MB | (18) 411000 | NONE | 
| 2.5MB | (18) 411000 | (18) 41256 | 
| 4MB | (18) 411000 | (18) 411000 | 
| DRAM SWITCH CONFIGURATION | |||
| Size | SW2/2 | SW2/3 | SW2/4 | 
| 512KB | On | On | On | 
| 1MB | On | On | Off | 
| 2MB | Off | On | On | 
| 2.5MB | On | Off | On | 
| 4MB | On | On | On | 
| NPU SPEED CONFIGURATION | ||
| Speed | W12 | W13 | 
| 5MHz or disabled | pins 2 & 3, 5 & 6 closed | pins 2 & 3, 5 & 6 closed | 
| 8 or 10MHz | pins 1 & 2, 4 & 5 closed | pins 1 & 2, 4 & 5 closed |