UNIDENTIFIED
80386 MOTHERBOARD
|
Processor |
80386DX |
|
Processor Speed |
25MHz |
|
Chip Set |
C & T |
|
Max. Onboard DRAM |
8MB |
|
Cache |
None |
|
BIOS |
AMI/Award/Phoenix |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit external memory card slots (2) |
|
NPU Options |
80287/80387 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J11 |
32-bit external memory card |
S1 |
|
Turbo switch |
J12 |
32-bit external memory card |
S2 |
|
Power LED & keylock |
J13 |
Reset switch |
SW1 |
|
External battery |
JP10 |
Turbo LED |
SW2 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Monitor type select color |
JP8 |
pins 1 & 2 closed | |
|
Monitor type select monochrome |
JP8 |
pins 2 & 3 closed | |
|
CMOS memory normal operation |
JP9 |
Open | |
|
CMOS memory clear |
JP9 |
Closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
NONE |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
NONE |
|
10MB |
(4) 1M x 9 |
(4) 1M x 9 |
(36) 41256 |
(36) 41256 |
|
16MB |
(4) 1M x 9 |
(4) 1M x 9 |
(36) 411000 |
(36) 411000 |
|
Note:Banks 2 & 3 are used when a 32-bit external memory card is installed. | ||||
|
NPU TYPE CONFIGURATION | |||
|
Type |
JP3 |
JP6 |
JP7 |
|
80287 |
Open |
Closed |
Open |
|
80387 |
Closed |
Closed |
Closed |
|
Disabled |
Open |
Open |
Open |
|
NPU MODE CONFIGURATION | ||
|
Setting |
JP2 |
JP4 |
|
Synchronous with cpu |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
Synchronous with oscillator osc1 |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
BIOS CONFIGURATION | ||
|
Setting |
JP1 |
JP20 |
|
AMI/Award |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
Phoenix |
pins 2 & 3 closed |
pins 2 & 3 closed |