SHUTTLE COMPUTER INTERNATIONAL, INC.
80386SX-20 CACHE MAINBOARD
|
Processor |
80386SX |
|
Processor Speed |
20MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
16MB |
|
Cache |
64KB |
|
BIOS |
AMI |
|
Dimensions |
248mm x 330mm |
|
I/O Options |
None |
|
NPU Options |
80387SX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Turbo LED |
JP8 |
Reset switch |
S2 |
|
Power LED & keylock |
J22 |
Turbo switch |
S3 |
|
Speaker |
J21 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
CMOS memory normal operation |
JP1 |
pins 2 & 3 closed | |
|
CMOS memory clear |
JP1 |
pins 1 & 2 closed | |
|
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 |
|
2MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
|
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 |
|
5MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 1M x 9 |
(2) 1M 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 |
|
9MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 4M x 9 |
NONE |
|
10MB |
(2) 1M x 9 |
(2) 4M x 9 |
NONE |
NONE |
|
12MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 4M x 9 |
NONE |
|
16MB |
(2) 4M x 9 |
(2) 4M x 9 |
NONE |
NONE |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
16KB |
(4) 4K x 8 |
(4) 4K x 8 |
(3) 16K x 4 |
|
32KB |
(4) 8K x 8 |
NONE |
(3) 16K x 4 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(3) 16K x 4 |
|
Note:The location of the cache is unidentified. | |||
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
JP3 |
JP4 |
JP5 |
JP6 |
JP7 |
|
16KB |
1 & 2 |
1 & 2 |
1 & 2 |
Open |
Open |
|
32KB |
2 & 3 |
1 & 2 |
1 & 2 |
Closed |
Open |
|
64KB |
2 & 3 |
2 & 3 |
2 & 3 |
Open |
Closed |
|
Note: Pins designated should be in the closed position. | |||||