UNIDENTIFIED
404 386SX
|
Processor |
80386SX |
|
Processor Speed |
16/20/25MHz |
|
Chip Set |
ALI |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
8MB |
|
Maximum Video Memory |
None |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
80387SX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Power LED & keylock |
J20 |
|
Reset switch |
J18 |
Turbo LED |
J21 pins 1 & 2 |
|
Speaker |
J19 |
Turbo switch |
J21 pins 4 & 5 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
Fast A20 gate signal from chip set |
J4 |
Pins 1 & 2 closed | |
|
Fast A20 gate signal from keyboard controller |
J4 |
Pins 2 & 3 closed | |
|
Monitor type select color |
JP1 |
Pins 2 & 3 closed | |
|
Monitor type select monochrome |
JP1 |
Pins 1 & 2 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
512KB |
(2) 256K x 9 |
None |
None |
None |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
None |
None |
|
1.5MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
None |
|
2MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
(2) 1M x 9 |
None |
None |
None |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
None |
None |
|
6MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
None |
|
8MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
CPU SPEED SELECTION | ||
|
Speed |
J3 |
J5 |
|
16MHz |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
20MHz |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
25MHz |
Pins 2 & 3 closed |
Pins 2 & 3 closed |