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 |