UNIDENTIFIED
CMC-820
| 
 Processor  | 
 80386DX  | 
| 
 Processor Speed  | 
 10/20MHz  | 
| 
 Chip Set  | 
 C & T  | 
| 
 Max. onboard DRAM  | 
 16MB  | 
| 
 Cache  | 
 None  | 
| 
 BIOS  | 
 Unknown  | 
| 
 Dimensions  | 
 330mm x 218mm  | 
| 
 I/O Options  | 
 32-bit external memory cards (2)  | 
| 
 NPU Options  | 
 80387DX/3167  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 External battery  | 
 J1  | 
 Speaker  | 
 J11  | 
| 
 Turbo LED  | 
 J7  | 
 Keylock  | 
 J12  | 
| 
 Reset Switch  | 
 J10  | 
 32-bit system memory cards  | 
 S1 & S2  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Jumper/Switch  | 
 Position  | |
| » | 
 BIOS type select 27128 or 27256  | 
 J3  | 
 pins 1 & 2 closed  | 
| 
 BIOS type select 27512  | 
 J3  | 
 pins 2 & 3 closed  | |
| » | 
 Monitor type select color  | 
 J5  | 
 Closed  | 
| 
 Monitor type select monochrome  | 
 J5  | 
 Open  | |
| » | 
 NPU enabled  | 
 J6  | 
 Closed  | 
| 
 NPU disabled  | 
 J6  | 
 Open  | |
| » | 
 NPU type select Intel or 80387  | 
 J9  | 
 Closed  | 
| 
 NPU type select Weitek 3167  | 
 J9  | 
 Open  | |
| 
 DRAM CONFIGURATION  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 1MB  | 
 (4) 256K x 9  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 2MB  | 
 (4) 256K x 9  | 
 (4) 256K x 9  | 
 NONE  | 
 NONE  | 
| 
 4MB  | 
 (4) 256K x 9  | 
 (4) 256K x 9  | 
 (4) 256K x 9  | 
 (4) 256K x 9  | 
| 
 4MB  | 
 (4) 1M x 9  | 
 NONE  | 
 NONE  | 
 NONE  | 
| 
 8MB  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
 NONE  | 
 NONE  | 
| 
 10MB  | 
 (4) 256K x 9  | 
 (4) 256K x 9  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 16MB  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 Note:The numbering of bank 0 and bank 1 are located on the system board. Banks 2 & 3 are located on the external memory card.  | ||||
| 
 CPU SPEED CONFIGURATION  | ||
| 
 Speed  | 
 J4  | 
 J8  | 
| 
 10MHz  | 
 pins 2 & 3 closed  | 
 pins 1 & 2 closed  | 
| 
 20MHz  | 
 pins 1 & 2 closed  | 
 pins 2 & 3 closed  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Serial port DB-9  | 
 J101  | 
 Parallel port DB-9  | 
 J103  | 
| 
 Serial port 10-pins header  | 
 J102  | 
 Parallel port 10-pins header  | 
 J104  | 
| 
 I/O CONFIGURATION  | ||||
| 
 Port  | 
 SW1/switch 1  | 
 SW1/switch 2  | 
 SW1/switch 3  | 
 SW1/switch 4  | 
| 
 Serial port DB-9  | 
 On  | 
 Off  | 
 On  | 
 On  | 
| 
 Serial port 10-pins header  | 
 On  | 
 On  | 
 On  | 
 Off  | 
| 
 Parallel port DB-9  | 
 On  | 
 On  | 
 Off  | 
 On  | 
| 
 Parallel port 10-pins header  | 
 Off  | 
 On  | 
 On  | 
 On  |