EVEREX SYSTEMS, INC.
3000B 80386SX-20
| Processor | 80386SX | 
| Processor Speed | 20MHz | 
| Chip Set | Suntac | 
| Max. Onboard DRAM | 8MB | 
| Cache | 64KB | 
| BIOS | AMI | 
| Dimensions | 355mm x 304mm | 
| I/O Options | None | 
| NPU Options | 80387SX | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Front panel display | J1 | External battery | J4 | 
| Speaker | J2 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper | Position | |
| » | Factory configured - do not alter | J6 | N/A | 
| » | Factory configured - do not alter | W7 | Open | 
| » | Factory configured - do not alter | W8 | Closed | 
| » | I/O bus (8-bit) speed select 5 wait states | W2 | pins 1 & 2 closed | 
| I/O bus (8-bit) speed select 4 wait states | W2 | pins 2 & 3 closed | |
| » | Power on speed select fast/switchable from keyboard | W3 | pins 2 & 3 closed | 
| Power on speed select slow | W3 | pins 1 & 2 closed | |
| Power on speed select fast | W3 | Open | |
| » | I/O bus (16-bit) speed select 2 wait states | W5 | pins 2 & 3 closed | 
| I/O bus (16-bit) speed select 1 wait states | W5 | pins 1 & 2 closed | |
| » | Monitor type select monochrome | W9 | Closed | 
| Monitor type select color | W9 | Open | |
| DRAM CONFIGURATION | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | 
| 1MB | (2) 256K x 9 | (2) 256K x 9 | NONE | NONE | 
| 2MB | (2) 256K x 9 | (2) 256K x 9 | (2) 256K x 9 | (2) 256K x 9 | 
| 2MB | (2) 1M x 9 | NONE | NONE | NONE | 
| 4MB | (2) 1M x 9 | (2) 1M x 9 | NONE | NONE | 
| 6MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | NONE | 
| 8MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | 
| DRAM SWITCH CONFIGURATION | ||||
| Size | SW1/1 | SW1/2 | SW1/3 | SW1/4 | 
| 1MB | On | On | On | On | 
| 2MB | On | On | On | Off | 
| 2MB | On | Off | Off | On | 
| 4MB | On | Off | On | Off | 
| 6MB | On | Off | Off | Off | 
| 8MB | Off | Off | Off | Off | 
| DRAM JUMPER CONFIGURATION | ||
| Size | W4 | W6 | 
| 1MB | pins 1 & 2 closed | pins 1 & 2 closed | 
| 2MB | pins 1 & 2 closed | pins 1 & 2 closed | 
| 2MB | pins 2 & 3 closed | pins 2 & 3 closed | 
| 4MB | pins 2 & 3 closed | pins 2 & 3 closed | 
| 6MB | pins 2 & 3 closed | pins 2 & 3 closed | 
| 8MB | pins 2 & 3 closed | pins 2 & 3 closed | 
| SRAM CONFIGURATION | |
| Size | Bank 3 | 
| 64KB | (9) 64K x 1 | 
| Notes:Cache location & chip sizes are unidentified. | |