UNIDENTIFIED
386DX W/B
Processor |
80386DX/CX486DLC |
Processor Speed |
33/40MHz |
Chip Set |
OPTI |
Max. Onboard DRAM |
32MB |
Cache |
64/128/256KB |
BIOS |
AMI |
Dimensions |
254mm x 218mm |
I/O Options |
None |
NPU Options |
CX487DLC |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
External battery |
J1 |
Turbo switch |
JP11 |
Power LED & keylock |
J18 |
Turbo LED |
JP12 |
Speaker |
J19 |
Reset switch |
SW1 |
USER CONFIGURABLE SETTINGS | |||
Function |
Jumper |
Position | |
» |
CMOS memory normal operation |
JP3 |
pins 2 & 3 closed |
CMOS memory clear |
JP3 |
pins 1 & 2 closed | |
» |
Monitor type select color |
JP4 |
Closed |
Monitor type select monochrome |
JP4 |
Open | |
» |
CPU clock type select single phase |
JP7 |
pins 2 & 3 closed |
CPU clock type select double phase |
JP7 |
pins 1 & 2 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 |
5MB |
(4) 256K x 9 |
(4) 1M x 9 |
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
16MB |
(4) 4M x 9 |
NONE |
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
20MB |
(4) 4M x 9 |
(4) 1M 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 8 |
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||||||
Size |
JP6 |
JP8 |
JP9 |
JP10 |
JP17 |
JP18 |
64KB |
Open |
Open |
Open |
2 & 3 |
Open |
Open |
128KB |
Closed |
Closed |
Open |
1 & 2 |
Open |
Closed |
256KB |
Closed |
Closed |
Closed |
2 & 3 |
Closed |
Closed |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION | |||
Type |
JP1 |
JP5 |
JP13 |
Cyrix |
Closed |
Closed |
Closed |
Intel |
Open |
Open |
Open |
Note: The location of JP1 is unidentified. |