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 |