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 |