UNIDENTIFIED
386DX-25/33 SYSTEM
| 
 Processor  | 
 80386DX  | 
| 
 Processor Speed  | 
 25/33MHz  | 
| 
 Chip Set  | 
 Unidentified  | 
| 
 Video Chip Set  | 
 Trident  | 
| 
 Maximum Onboard Memory  | 
 32MB  | 
| 
 Maximum Video Memory  | 
 1MB  | 
| 
 Cache  | 
 None  | 
| 
 BIOS  | 
 Phoenix  | 
| 
 Dimensions  | 
 378mm x 310mm  | 
| 
 I/O Options  | 
 Floppy drive interface, game port, IDE interface, parallel port, serial ports (2), VGA port, riser slot, modem connector  | 
| 
 NPU Options  | 
 80387DX/3167  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Game port  | 
 CN1  | 
 IDE interface  | 
 J24  | 
| 
 VGA port  | 
 CN2  | 
 IDE interface LED  | 
 J25  | 
| 
 Parallel port  | 
 CN3  | 
 Floppy drive interface LED  | 
 J26  | 
| 
 Serial port 2  | 
 CN4  | 
 Power LED  | 
 J27  | 
| 
 Serial port 1  | 
 CN5  | 
 Floppy drive interface  | 
 J28  | 
| 
 Chassis fan power  | 
 J4  | 
 Reset switch  | 
 J29  | 
| 
 External battery  | 
 J10  | 
 Riser slot  | 
 SL1  | 
| 
 Modem connector  | 
 J23  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Label  | 
 Position  | |
| 
 HDC enabled  | 
 J2  | 
 Pins 2 & 3 closed  | |
| 
 HDC disabled  | 
 J2  | 
 Pins 1 & 2 closed  | |
| 
 Game port enabled  | 
 J3  | 
 Pins 1 & 2 closed  | |
| 
 Game port disabled  | 
 J3  | 
 Pins 2 & 3 closed  | |
| 
 Monitor type select color  | 
 J5  | 
 Closed  | |
| 
 Monitor type select monochrome  | 
 J5  | 
 Open  | |
| 
 Serial port 2 enabled  | 
 J6  | 
 Pins 1 & 2 closed  | |
| 
 Serial port 2 disabled  | 
 J6  | 
 Pins 2 & 3 closed  | |
| 
 Parallel port enabled  | 
 J7  | 
 Pins 1 & 2 closed  | |
| 
 Parallel port disabled  | 
 J7  | 
 Pins 2 & 3 closed  | |
| 
 Serial port 2 COM select COM2  | 
 J8  | 
 Pins 1 & 2 closed  | |
| 
 Serial port 2 COM select COM4  | 
 J8  | 
 Pins 2 & 3 closed  | |
| 
 Parallel port LPT select LPT1  | 
 J9  | 
 Pins 1 & 2 closed  | |
| 
 Parallel port LPT select LPT2  | 
 J9  | 
 Pins 2 & 3 closed  | |
| 
 Serial port 1 enabled  | 
 J11  | 
 Pins 1 & 2 closed  | |
| 
 Serial port 1 disabled  | 
 J11  | 
 Pins 2 & 3 closed  | |
| 
 Serial port 1 COM select COM1  | 
 J12  | 
 Pins 1 & 2 closed  | |
| 
 Serial port 1 COM select COM3  | 
 J12  | 
 Pins 2 & 3 closed  | |
| 
 »  | 
 Monitor type select standard  | 
 J16  | 
 Pins 1 & 2 closed  | 
| 
 Monitor type select non standard monochrome  | 
 J16  | 
 Pins 2 & 3 closed  | |
| 
 Monitor type select non standard color  | 
 J16  | 
 Open  | |
| 
 Video mode select interlaced  | 
 J19  | 
 Closed  | |
| 
 Video mode select non interlaced  | 
 J19  | 
 Open  | |
| 
 IDE interface enabled  | 
 J21  | 
 Pins 1 & 2 closed  | |
| 
 IDE interface disabled  | 
 J21  | 
 Pins 2 & 3 closed  | |
| 
 Floppy drive interface enabled  | 
 J22  | 
 Pins 1 & 2 closed  | |
| 
 Floppy drive interface disabled  | 
 J22  | 
 Pins 2 & 3 closed  | |
| 
 DRAM CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 1MB  | 
 (4) 256K x 9  | 
 None  | 
| 
 2MB  | 
 (4) 256K x 9  | 
 (4) 256K x 9  | 
| 
 4MB  | 
 (4) 1M x 9  | 
 None  | 
| 
 5MB  | 
 (4) 1M x 9  | 
 (4) 256K x 9  | 
| 
 8MB  | 
 (4) 1M x 9  | 
 (4) 1M x 9  | 
| 
 16MB  | 
 (4) 4M x 9  | 
 None  | 
| 
 17MB  | 
 (4) 4M x 9  | 
 (4) 256K x 9  | 
| 
 20MB  | 
 (4) 4M x 9  | 
 (4) 1M x 9  | 
| 
 32MB  | 
 (4) 4M x 9  | 
 (4) 4M x 9  | 
| 
 Note: Banks are interchangeable.  | ||
| 
 VIDEO MEMORY CONFIGURATION  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 256KB  | 
 (2) 44256  | 
 None  | 
 None  | 
 None  | 
| 
 512KB  | 
 (2) 44256  | 
 (2) 44256  | 
 None  | 
 None  | 
| 
 1MB  | 
 (2) 44256  | 
 (2) 44256  | 
 (2) 44256  | 
 (2) 44256  |