EVERSOURCE COMPUTERS, INC.
USA 486DX
|
Processor |
80486DX |
|
Processor Speed |
33/50MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
Cache |
256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 220mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Power LED & keylock |
J2 |
Reset switch |
J6 |
|
Turbo switch |
J4 |
External battery |
J7 |
|
Turbo LED |
J5 |
Speaker |
J100 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Monitor type select color |
J3 |
Closed | |
|
Monitor type select monochrome |
J3 |
Open | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
1MB |
(4) 256K x 9 |
NONE |
|
1MB |
NONE |
(4) 256K x 9 |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
NONE |
|
4MB |
NONE |
(4) 1M x 9 |
|
5MB |
(4) 256K x 9 |
(4) 1 M x 9 |
|
5MB |
(4) 1 M x 9 |
(4) 256K x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
16MB |
NONE |
(4) 4M x 9 |
|
17MB |
(4) 4M x 9 |
(4) 256K x 9 |
|
17MB |
(4) 256K x 9 |
(4) 4M x 9 |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 1 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 1 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 8K x 1 |
|
Note:The exact location of TAG is unidentified. | |||
|
CACHE JUMPER CONFIGURATION | |||
|
Size |
JMP1 |
JMP2 |
JMP3 |
|
64KB |
pins 1 & 2 closed |
pins 1 & 2, 3 & 4 closed |
pins 1 & 2 closed |
|
128KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
256KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |