UNIDENTIFIED
386SX SYSTEM
| 
 Processor  | 
 80386SX  | 
| 
 Processor Speed  | 
 16/25MHz  | 
| 
 Chip Set  | 
 Headland  | 
| 
 Video Chip Set  | 
 Trident  | 
| 
 Maximum Onboard Memory  | 
 6MB  | 
| 
 Maximum Video Memory  | 
 1MB  | 
| 
 Cache  | 
 None  | 
| 
 BIOS  | 
 Phoenix  | 
| 
 Dimensions  | 
 396mm x 368mm  | 
| 
 I/O Options  | 
 Floppy drive interface, game port, IDE interface, parallel port, serial ports (2), VGA port, riser slot, modem/fax interface  | 
| 
 NPU Options  | 
 80387SX  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 Game port  | 
 CN1  | 
 Modem/fax interface  | 
 J25  | 
| 
 VGA port  | 
 CN2  | 
 IDE interface  | 
 J27  | 
| 
 Parallel port  | 
 CN3  | 
 IDE interface LED  | 
 J28  | 
| 
 Serial port 2  | 
 CN4  | 
 Floppy drive interface LED  | 
 J29  | 
| 
 Serial port 1  | 
 CN5  | 
 Power LED  | 
 J30  | 
| 
 Chassis fan power  | 
 J14  | 
 Floppy drive interface  | 
 J31  | 
| 
 Reset switch  | 
 J17  | 
 Riser slot  | 
 SL1  | 
| 
 Speaker  | 
 J21  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Label  | 
 Position  | |
| 
 Game port enabled  | 
 J6  | 
 Pins 1 & 2 closed  | |
| 
 Game port disabled  | 
 J6  | 
 Pins 2 & 3 closed  | |
| 
 Serial port 2 enabled  | 
 J8  | 
 Pins 1 & 2 closed  | |
| 
 Serial port 2 disabled  | 
 J8  | 
 Pins 2 & 3 closed  | |
| 
 Parallel port enabled  | 
 J9  | 
 Pins 1 & 2 closed  | |
| 
 Parallel port disabled  | 
 J9  | 
 Pins 2 & 3 closed  | |
| 
 Serial port 2 address select 2F8  | 
 J10  | 
 Pins 1 & 2 closed  | |
| 
 Serial port 2 address select 2E8  | 
 J10  | 
 Pins 2 & 3 closed  | |
| 
 Parallel port address select 378  | 
 J11  | 
 Pins 1 & 2 closed  | |
| 
 Parallel port address select 278  | 
 J11  | 
 Pins 2 & 3 closed  | |
| 
 Serial port 1 enabled  | 
 J12  | 
 Pins 1 & 2 closed  | |
| 
 Serial port 1 disabled  | 
 J12  | 
 Pins 2 & 3 closed  | |
| 
 Serial port 1 address select 3F8  | 
 J13  | 
 Pins 1 & 2 closed  | |
| 
 Serial port 1 address select 3E8  | 
 J13  | 
 Pins 2 & 3 closed  | |
| 
 Monitor type select color  | 
 J15  | 
 Pins 1 & 2 closed  | |
| 
 Monitor type select monochrome  | 
 J15  | 
 Pins 2 & 3 closed  | |
| 
 Video mode select interlaced  | 
 J18  | 
 Closed  | |
| 
 Video mode select non interlaced  | 
 J18  | 
 Open  | |
| 
 NPU synchronous with CPU  | 
 J20  | 
 Open  | |
| 
 NPU asynchronous with CPU  | 
 J20  | 
 Closed  | |
| 
 IDE interface enabled  | 
 J23  | 
 Pins 1 & 2 closed  | |
| 
 IDE interface disabled  | 
 J23  | 
 Pins 2 & 3 closed  | |
| 
 Floppy drive interface enabled  | 
 J24  | 
 Pins 1 & 2 closed  | |
| 
 Floppy drive interface disabled  | 
 J24  | 
 Pins 2 & 3 closed  | |
| 
 DRAM CONFIGURATION  | ||||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
 Bank 2  | 
 Bank 3  | 
| 
 1MB  | 
 512KB  | 
 512KB  | 
 None  | 
 None  | 
| 
 1.5MB  | 
 512KB  | 
 512KB  | 
 (2) 256K x 9  | 
 None  | 
| 
 2MB  | 
 512KB  | 
 512KB  | 
 (2) 256K x 9  | 
 (2) 256K x 9  | 
| 
 3MB  | 
 512KB  | 
 512KB  | 
 (2) 1M x 9  | 
 None  | 
| 
 5MB  | 
 512KB  | 
 512KB  | 
 (2) 1M x 9  | 
 (2) 1M x 9  | 
| 
 3MB  | 
 1MB  | 
 None  | 
 (2) 256K x 9  | 
 (2) 256K x 9  | 
| 
 4MB  | 
 1MB  | 
 None  | 
 (2) 1M x 9  | 
 None  | 
| 
 6MB  | 
 1MB  | 
 None  | 
 (2) 1M x 9  | 
 (2) 1M x 9  | 
| 
 Note: Bank 0 or banks 0 & 1 are factory installed and is not configurable.  | ||||
| 
 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  |