ZENITH DATA SYSTEMS
Z-248/12
| 
 Processor  | 
 80286  | 
| 
 Processor Speed  | 
 12MHz  | 
| 
 Chip Set  | 
 Unidentified  | 
| 
 Video Chip Set  | 
 None  | 
| 
 Maximum Onboard Memory  | 
 6MB  | 
| 
 Maximum Video Memory  | 
 None  | 
| 
 Cache  | 
 None  | 
| 
 BIOS  | 
 Unidentified  | 
| 
 Dimensions  | 
 355mm x 304mm  | 
| 
 I/O Options  | 
 None  | 
| 
 NPU Options  | 
 80287  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Label  | 
 Position  | |
| 
 »  | 
 Factory configured - do not alter  | 
 J101  | 
 Unidentified  | 
| 
 »  | 
 NPU clock mode select /3  | 
 J103  | 
 Closed  | 
| 
 NPU clock mode select direct  | 
 J103  | 
 Open  | |
| 
 »  | 
 Factory configured - do not alter  | 
 J106  | 
 Unidentified  | 
| 
 »  | 
 Factory configured - do not alter  | 
 J113  | 
 Pins 1 & 2 closed  | 
| 
 »  | 
 Speaker enabled  | 
 J114  | 
 Closed  | 
| 
 Speaker disabled  | 
 J114  | 
 Open  | |
| 
 »  | 
 Chip at U-169 is Poach 7  | 
 J115  | 
 Pins 1 & 2 closed  | 
| 
 Chip at U-169 is Poach 1  | 
 J115  | 
 Pins 2 & 3 closed  | |
| 
 »  | 
 Factory configured - do not alter  | 
 J116  | 
 Pins 2 & 3 closed  | 
| 
 DRAM CONFIGURATION  | |||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
| 
 1MB  | 
 (2) 256K x 9  | 
 (2) 256K x 9  | 
 None  | 
| 
 3MB  | 
 (2) 256K x 9  | 
 (2) 256K x 9  | 
 (2) 1M x 9  | 
| 
 6MB  | 
 (2) 1M x 9  | 
 (2) 1M x 9  | 
 (2) 1M x 9  | 
| 
 DRAM JUMPER CONFIGURATION  | |
| 
 Size  | 
 J102  | 
| 
 1MB  | 
 Pins 2 & 3 closed  | 
| 
 3MB  | 
 Pins 2 & 3 closed  | 
| 
 6MB  | 
 Pins 1 & 2 closed  | 
| 
 NPU SPEED SELECTION  | ||
| 
 Speed  | 
 Type  | 
 P113  | 
| 
 6MHz  | 
 80287  | 
 Pins 13 & 14 closed  | 
| 
 8MHz  | 
 80C87  | 
 Pins 13 & 14 closed  | 
| 
 8MHz  | 
 80287  | 
 Pins 7 & 8 closed  | 
| 
 12MHz  | 
 80C87  | 
 Pins 7 & 8 closed  |