UNIDENTIFIED
P386 MAINBOARD
|
Processor |
80386 |
|
Processor Speed |
20/25MHz |
|
Chip Set |
C & T |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
16MB (8 MB on external memory card) |
|
Maximum Video Memory |
None |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
External memory card |
|
NPU Options |
80287/80387 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Auxiliary keyboard connector |
J2 |
Turbo LED |
J16 |
|
External battery |
J3 |
Speaker |
J17 |
|
Reset switch |
J10 |
Power LED & keylock |
J18 |
|
Turbo switch |
J15 |
External memory card |
SL1 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
|
CMOS memory normal operation |
J4 |
Open |
|
CMOS memory clear |
J4 |
Closed | |
|
Monitor type select color |
J5 |
Pins 1 & 2 closed | |
|
Monitor type select monochrome |
J5 |
Pins 2 & 3 closed | |
|
DRAM CONFIGURATION | |||||
|
Size |
Start Bank |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB (A) |
SIP |
(4) 256K x 9 |
None |
None |
None |
|
1MB (B) |
DIP |
None |
None |
(8) 44256 |
None |
|
2MB (A) |
SIP |
(4) 256K x 9 |
(4) 256K x 9 |
None |
None |
|
2MB (B) |
DIP |
None |
None |
(8) 44256 |
(8) 44256 |
|
4MB (A) |
SIP |
(4) 256K x 9 |
(4) 256K x 9 |
(8) 44256 |
(8) 44256 |
|
4MB (B) |
DIP |
(4) 256K x 9 |
(4) 256K x 9 |
(8) 44256 |
(8) 44256 |
|
4MB (C) |
SIP |
(4) 1M x 9 |
None |
None |
None |
|
8MB |
SIP |
(4) 1M x 9 |
(4) 1M x 9 |
None |
None |
|
10MB (A) |
SIP |
(4) 1M x 9 |
(4) 1M x 9 |
(8) 44256 |
(8) 44256 |
|
10MB (B) |
DIP |
(4) 1M x 9 |
(4) 1M x 9 |
(8) 44256 |
(8) 44256 |
|
DRAM PARITY CONFIGURATION | |||
|
Size |
Start Bank |
P 2 |
P 3 |
|
1MB (A) |
SIP |
None |
None |
|
1MB (B) |
DIP |
(4) 41256 |
None |
|
2MB (A) |
SIP |
None |
None |
|
2MB (B) |
DIP |
(4) 41256 |
(4) 41256 |
|
4MB (A) |
SIP |
(4) 41256 |
(4) 41256 |
|
4MB (B) |
DIP |
(4) 41256 |
(4) 41256 |
|
4MB (C) |
SIP |
None |
None |
|
8MB |
SIP |
None |
None |
|
10MB (A) |
SIP |
(4) 41256 |
(4) 41256 |
|
10MB (B) |
DIP |
(4) 41256 |
(4) 41256 |
|
DRAM JUMPER CONFIGURATION | ||||
|
Size |
J6 |
J7 |
J8 |
J9 |
|
1MB (A) |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
|
1MB (B) |
2 & 3, 4 & 5 |
2 & 3, 4 & 5 |
2 & 3, 4 & 5 |
2 & 3, 4 & 5 |
|
2MB (A) |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
|
2MB (B) |
2 & 3, 4 & 5 |
2 & 3, 4 & 5 |
2 & 3, 4 & 5 |
2 & 3, 4 & 5 |
|
4MB (A) |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
|
4MB (B) |
2 & 3, 4 & 5 |
2 & 3, 4 & 5 |
2 & 3, 4 & 5 |
2 & 3, 4 & 5 |
|
4MB (C) |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
|
8MB |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
|
10MB (A) |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
1 & 2, 3 & 4 |
|
10MB (B) |
2 & 3, 4 & 5 |
2 & 3, 4 & 5 |
2 & 3, 4 & 5 |
2 & 3, 4 & 5 |
|
Note: Pins designated should be in the closed position. | ||||
|
NPU SELECTION | ||
|
Setting |
J11 |
J12 |
|
None |
Pins 2 & 3 closed |
Open |
|
80287 |
Pins 2 & 3 closed |
Open |
|
80387 |
Pins 1 & 2 closed |
Closed |