UNIDENTIFIED
GH-286
| Processor | 80286 | 
| Processor Speed | 10/12MHz | 
| Chip Set | G-2 | 
| Max. Onboard DRAM | 4MB | 
| Cache | None | 
| BIOS | AMI | 
| Dimensions | 330mm x 218mm | 
| I/O Options | None | 
| NPU Options | 80287 | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Turbo switch | J4 | Speaker | J17 | 
| External battery | J14 | Turbo LED | J19 | 
| Power LED & keylock | J16 | Reset switch | J20 | 
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper/Switch | Position | |
| » | CPU speed select [CTRL][ALT][+] = fast, [CTRL][ALT][-] = slow | J4 | pins 1 & 2 closed | 
| CPU speed select fast | J4 | pins 2 & 3 closed | |
| » | NPU mode select synchronous with CPU | JP2 | pins 2 & 3 closed | 
| NPU mode select asynchronous with CPU | JP2 | pins 1 & 2 closed | |
| » | Parity check enabled | JP3 | Closed | 
| Parity check disabled | JP3 | Open | |
| » | DRAM select 0 wait states | J18 | pins 2 & 3 closed | 
| DRAM select 1 wait state | J18 | Open | |
| DRAM wait states select [CTRL][ALT][0] = 0 [CTRL][ALT][1] = 1 | J18 | pins 1 & 2 closed | |
| » | Monitor type select color | SW1/1 | On | 
| Monitor type select monochrome | SW1/1 | Off | |
| 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 | (4) 4464 | (2) 4164 | NONE | NONE | 
| 1MB | (4) 44256 | (2) 41256 | (4) 44256 | (2) 41256 | NONE | NONE | 
| 2MB | NONE | NONE | NONE | NONE | (2) 1M x 9 | NONE | 
| 4MB | NONE | NONE | NONE | NONE | (2) 1M x 9 | (2) 1M x 9 | 
| DRAM SWITCH CONFIGURATION | |||
| Size | SW1/2 | SW1/3 | SW1/4 | 
| 512KB | On | On | Off | 
| 640KB | On | Off | On | 
| 1MB | On | Off | Off | 
| 2MB | Off | Off | On | 
| 4MB | Off | Off | Off |