UNIDENTIFIED
386DX CACHE MAINBOARD
|
Processor |
80386DX |
|
Processor Speed |
33/40MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
Cache |
128KB |
|
BIOS |
AMI |
|
Dimensions |
220mm x 170mm |
|
I/O Options |
None |
|
NPU Options |
80387DX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Turbo switch |
JP4 |
|
Power LED & keylock |
J16 |
Speaker |
JP6 |
|
Turbo LED |
JP3 |
Reset switch |
S1 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Monitor type select monochrome |
JP1 |
Open |
|
Monitor type select color |
JP1 |
Closed | |
|
|
CMOS memory normal operation |
JP2 |
pins 1 & 2 closed |
|
CMOS memory clear |
JP2 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
1MB |
(4) 256K x 9 |
NONE |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | |
|
Size |
Bank 0 |
|
128KB |
(4) 32K x 8 |
|
CPU SPEED CONFIGURATION | ||
|
Speed |
JP7 |
JP8 |
|
50MHz |
Closed |
Open |
|
66MHz |
Open |
Closed |
|
80MHz |
Open |
Open |