UNIDENTIFIED
386 MOTHERBOARD
|
Processor |
80386SX |
|
Processor Speed |
16/25MHz |
|
Chip Set |
C & T |
|
Max. Onboard DRAM |
8MB |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit external memory cards (2) |
|
NPU Options |
80287/80387SX/3167 (location of the 80287 is unidentified) |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
CN1 |
Reset switch |
J19 |
|
Turbo switch |
J16 |
Turbo LED |
J22 |
|
Power LED & keylock |
J17 |
32-bit system memory cards |
SL1 & SL2 |
|
Speaker |
J18 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Factory configured - do not alter |
CN2 |
N/A |
|
80287 not installed |
JP1 |
Open | |
|
80287 installed |
JP1 |
Closed | |
|
Monitor type select color |
JP3 |
pins 1 & 2 closed | |
|
Monitor type select monochrome |
JP3 |
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 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
NPU TYPE CONFIGURATION (80387/WEITEK ONLY) | ||
|
Setting |
JP11 |
JP12 |
|
NPU not installed |
Open |
Open |
|
NPU installed |
Closed |
Closed |
|
MISCELLANEOUS TECHNICAL NOTE |
|
Note: The location of pin 1 is unidentified. |