UNIDENTIFIED
80486 CACHE SYSTEM
|
Processor |
80486SX/80487SX/80486DX |
|
Processor Speed |
25/33/40/50MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit system card |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J1 |
Turbo switch |
J5 |
|
Power LED & keylock |
J2 |
External battery |
J6 |
|
Reset switch |
J3 |
32-bit system card |
SL1 |
|
Turbo LED |
J4 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
NPU wait state select 0 wait states |
JP1 |
Open |
|
NPU wait state select 1 wait state |
JP1 |
Closed | |
|
|
Monitor type select color |
JP2 |
Open |
|
Monitor type select monochrome |
JP2 |
Closed | |
|
|
Factory configured - do not alter |
JP17 |
Open |
|
|
Factory configured - do not alter |
JPA |
Open |
|
|
Factory configured - do not alter |
JPB |
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) 1M x 9 |
(4) 256K x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
17MB |
(4) 4M x 9 |
(4) 256K 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 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
|
CACHE CONFIGURATION (TAG) | ||||
|
Size |
U15 |
U16 |
U17 |
U18 |
|
64KB |
NONE |
NONE |
(1) 16K x 4 |
(1) 8K x 8 |
|
128KB |
NONE |
NONE |
(1) 16K x 4 |
(1) 8K x 8 |
|
256KB |
(1) 16K x 4 |
(1) 16K x 4 |
(1) 16K x 4 |
NONE |
|
CACHE JUMPER CONFIGURATION | ||||
|
Size |
JP6 |
JP7 |
JP8 |
JP9 |
|
64KB |
Open |
Open |
Open |
Open |
|
128KB |
Closed |
Open |
Closed |
pins 2 & 3 closed |
|
256KB |
Closed |
Closed |
Closed |
pins 1 & 2 closed |
|
CPU TYPE CONFIGURATION | |||
|
Type |
JP3 |
JP4 |
JP5 |
|
80486SX |
Open |
pins 1 & 2 closed |
Open |
|
80487SX |
Closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
80486DX |
Closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
CLOCK SELECT CONFIGURATION | |||
|
Clock |
JP10 |
JP11 |
JP12 |
|
CLK/3 |
pins 1 & 2 closed |
Closed |
Open |
|
CLK/4 |
pins 1 & 2 closed |
Open |
Closed |
|
ECLK/5 |
pins 1 & 2 closed |
Open |
Open |
|
CLK/6 |
pins 1 & 2 closed |
Closed |
Closed |