UNIDENTIFIED
386SX-20/25
|
Processor |
80386SX |
|
Processor Speed |
20/25MHz |
|
Chip Set |
Headland |
|
Max. onboard DRAM |
8MB |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
80387SX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
JP3 |
Turbo Switch |
JP11 |
|
Power LED & keylock |
JP9 |
Speaker |
JP12 |
|
Turbo LED |
JP10 |
Reset |
JP13 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Monitor type select color |
JP2 |
Closed | |
|
Monitor type select monochrome |
JP2 |
Open | |
|
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 |
|
3MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 1M x 9 |
NONE |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
NONE |
NONE |
|
4.5MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 256K x 9 |
NONE |
|
5MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
|
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 |
|
PIPELINE MODE CONFIGURATION | ||||
|
Mode |
CPU Speed |
JP5 |
JP6 |
JP7 |
|
Enabled |
20 or 25MHz |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
Disabled |
20mhz only |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |