AUSTIN COMPUTER SYSTEMS
486/SLC 25
|
Processor |
80386SX/CX486SLC |
|
Processor Speed |
25MHz |
|
Chip Set |
C & T |
|
Max. Onboard DRAM |
16MB |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
220mm x 220mm |
|
I/O Options |
16-bit external cache memory card slot |
|
NPU Options |
80387SX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J1 |
External battery |
J13 |
|
Turbo switch |
J7 |
Reset switch |
J14 |
|
Turbo LED |
J8 |
16-bit external cache memory card |
S1 |
|
Power LED & keylock |
J10 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
CPU speed select forced high |
J7 |
pins 1 & 2 closed | |
|
Monitor type select color |
J12 |
pins 1 & 2 closed | |
|
Monitor type select monochrome |
J12 |
pins 2 & 3 closed | |
|
CMOS memory normal operation |
J15 |
pins 2 & 3 closed | |
|
CMOS memory clear |
J15 |
pins 1 & 2 closed | |
|
Cache card absent |
W1 |
pins 2 & 3 closed | |
|
Cache card present |
W1 |
pins 1 & 2 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
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 |
|
2MB |
(2) 1M x 9 |
NONE |
NONE |
NONE |
|
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 JUMPER CONFIGURATION FOR CACHE CARD | |||||
|
Size |
J2 |
J3 |
J4 |
J5 |
J6 |
|
64KB/2-Way Set Associative |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
64KB/Directly Mapped |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
Note: Pins designated should be in the closed position. | |||||