DIGITAL EQUIPMENT CORPORATION
PC 2230 CE
| 
 Processor  | 
 80286  | 
| 
 Processor Speed  | 
 12MHz  | 
| 
 Chip Set  | 
 Unidentified  | 
| 
 Video Chip Set  | 
 ATI  | 
| 
 Maximum Onboard Memory  | 
 4MB  | 
| 
 Maximum Video Memory  | 
 64KB  | 
| 
 Cache  | 
 None  | 
| 
 BIOS  | 
 Unidentified  | 
| 
 Dimensions  | 
 238mm x 228mm  | 
| 
 I/O Options  | 
 Floppy drive interface, IDE interface, parallel port, serial ports (2), VGA port, riser slot  | 
| 
 NPU Options  | 
 80287  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Floppy/hard drive power interface  | 
 J5  | 
 Serial port  | 
 J10  | 
| 
 IDE interface  | 
 J6  | 
 Parallel port  | 
 J11  | 
| 
 Floppy drive interface  | 
 J7  | 
 VGA port  | 
 J12  | 
| 
 Serial port  | 
 J9  | 
 Riser slot  | 
 SL1  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Label  | 
 Position  | |
| 
 SIMM type select 256KB  | 
 W6  | 
 Open  | |
| 
 SIMM type select 1MB  | 
 W6  | 
 Closed  | |
| 
 »  | 
 BIOS type select 27256  | 
 W8  | 
 Closed  | 
| 
 BIOS type select 27128  | 
 W8  | 
 Open  | |
| 
 Shadow RAM enabled  | 
 W9  | 
 Open  | |
| 
 Shadow RAM disabled  | 
 W9  | 
 Closed  | |
| 
 SIMM type select all same type  | 
 W18  | 
 Open  | |
| 
 SIMM type select mixed SIMMs  | 
 W18  | 
 Closed  | |
| 
 »  | 
 Keyboard clock speed select 8MHz  | 
 W22  | 
 Pins 1 & 2 closed  | 
| 
 Keyboard clock speed select 4MHz  | 
 W22  | 
 Pins 2 & 3 closed  | |
| 
 »  | 
 Burn in mode not disabled  | 
 W26  | 
 Open  | 
| 
 Burn in mode enabled  | 
 W26  | 
 Closed  | |
| 
 »  | 
 Manufacturing mode disabled  | 
 W27  | 
 Open  | 
| 
 Manufacturing mode enabled  | 
 W27  | 
 Closed  | |
| 
 »  | 
 Floppy drive interface enabled  | 
 W28  | 
 Open  | 
| 
 Floppy drive interface disabled  | 
 W28  | 
 Closed  | |
| 
 »  | 
 Video type select normal  | 
 W29  | 
 Open  | 
| 
 Video type select slow  | 
 W29  | 
 Closed  | |
| 
 Speaker volume select high  | 
 W30  | 
 Open  | |
| 
 Speaker volume select low  | 
 W30  | 
 Closed  | |
| 
 »  | 
 60ns CAS enabled  | 
 W31  | 
 Closed  | 
| 
 60ns CAS disabled  | 
 W31  | 
 Open  | |
| 
 I/O half speed enabled  | 
 W33  | 
 Pins 1 & 2 closed  | |
| 
 I/O half speed disabled  | 
 W33  | 
 Pins 2 & 3 closed  | |
| 
 Monitor type select color  | 
 S1/1  | 
 On  | |
| 
 Monitor type select monochrome  | 
 S1/1  | 
 Off  | |
| 
 Monochrome mode using a color monitor  | 
 S1/2  | 
 On  | |
| 
 Color mode using a monochrome monitor  | 
 S1/2  | 
 Off  | |
| 
 DRAM CONFIGURATION  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 256KB  | 
 (1) 256K x 9  | 
 None  | 
 None  | 
 None  | 
| 
 512KB  | 
 (1) 256K x 9  | 
 (1) 256K x 9  | 
 None  | 
 None  | 
| 
 768KB  | 
 (1) 256K x 9  | 
 (1) 256K x 9  | 
 (1) 256K x 9  | 
 None  | 
| 
 1MB  | 
 (1) 256K x 9  | 
 (1) 256K x 9  | 
 (1) 256K x 9  | 
 (1) 256K x 9  | 
| 
 1MB  | 
 (1) 1M x 9  | 
 None  | 
 None  | 
 None  | 
| 
 1.2MB  | 
 (1) 1M x 9  | 
 (1) 256K x 9  | 
 None  | 
 None  | 
| 
 1.5MB  | 
 (1) 1M x 9  | 
 (1) 256K x 9  | 
 (1) 256K x 9  | 
 None  | 
| 
 1.79MB  | 
 (1) 1M x 9  | 
 (1) 256K x 9  | 
 (1) 256K x 9  | 
 (1) 256K x 9  | 
| 
 DRAM CONFIGURATION (CON’T)  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 2MB  | 
 (1) 1M x 9  | 
 (1) 1M x 9  | 
 None  | 
 None  | 
| 
 2.28MB  | 
 (1) 1M x 9  | 
 (1) 1M x 9  | 
 (1) 256K x 9  | 
 None  | 
| 
 2.5MB  | 
 (1) 1M x 9  | 
 (1) 1M x 9  | 
 (1) 256K x 9  | 
 (1) 256K x 9  | 
| 
 3MB  | 
 (1) 1M x 9  | 
 (1) 1M x 9  | 
 (1) 1M x 9  | 
 None  | 
| 
 4MB  | 
 (1) 1M x 9  | 
 (1) 1M x 9  | 
 (1) 1M x 9  | 
 (1) 1M x 9  | 
| 
 Note: The location of banks 0, 1, 2, & 3 is unidentified.  | ||||
| 
 DRAM JUMPER SELECTION  | ||
| 
 SIMMS installed  | 
 W16  | 
 W17  | 
| 
 1  | 
 Open  | 
 Open  | 
| 
 2  | 
 Open  | 
 Closed  | 
| 
 3  | 
 Closed  | 
 Open  | 
| 
 4  | 
 Closed  | 
 Closed  | 
| 
 DRAM SPEED SELECTION  | ||
| 
 Speed  | 
 W13  | 
 W14  | 
| 
 100ns  | 
 Open  | 
 Closed  | 
| 
 120ns  | 
 Closed  | 
 Open  | 
| 
 VIDEO MEMORY CONFIGURATION  | 
| 
 Note: The location of the 64KB video memory is unidentified.  | 
| 
 ONBOARD VIDEO SELECTION  | |||
| 
 Setting  | 
 W10  | 
 W21  | |
| » | 
 Enabled  | 
 Closed  | 
 Closed  | 
| 
 Disabled  | 
 Open  | 
 Open  | |
| 
 Disabled  | 
 Open  | 
 Closed  | |
| 
 Disabled  | 
 Closed  | 
 Open  | |