ASUS COMPUTER INTERNATIONAL
EISA-486SI
|
Processor |
80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
|
Processor Speed |
20/25/33/50/66(internal)MHz |
|
Chip Set |
SIS |
|
Max. Onboard DRAM |
128MB |
|
Cache |
64/128/256KB |
|
BIOS |
Award |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS |
|||
|
Purpose |
Location |
Purpose |
Location |
|
Reset switch |
CON1 |
Speaker |
CON4 |
|
Turbo switch |
CON2 |
Power LED & keylock |
CON5 |
|
Turbo LED |
CON3 |
|
|
|
USER CONFIGURABLE SETTINGS |
|||
|
Function |
Jumper |
Position |
|
|
» |
Factory configured - do not alter |
JP1 |
Closed |
|
» |
Factory configured - do not alter |
JP2 |
pins 1 & 2 closed |
|
» |
Factory configured - do not alter |
JP3 |
pins 2 & 3 closed |
|
» |
Factory configured - do not alter |
JP4 |
pins 2 & 3 closed |
|
» |
Factory configured - do not alter |
JP5 |
pins 2 & 3 closed |
|
» |
Factory configured - do not alter |
JP6 |
pins 1 & 2 closed |
|
» |
Factory configured - do not alter |
JP7 |
pins 2 & 3 closed |
|
» |
Factory configured - do not alter |
JP8 |
pins 2 & 3 closed |
|
» |
CPU speed select <= 33MHz (internal) |
JP9 |
pins 1 & 2 closed |
|
|
CPU speed select 50MHz (internal) |
JP9 |
pins 2 & 3 closed |
|
Note: Jumpers JP1 - JP8 are absent from revisions 1.2 and later. |
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|
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 |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 16M x 9 |
NONE |
|
128MB |
(4) 16M x 9 |
(4) 16M x 9 |
|
CACHE CONFIGURATION |
||||
|
Size |
Bank 0 |
Bank 1 |
TAG (U39) |
TAG (U40) |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
NONE |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
NONE |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 8K x 8 |
(1) 8K x 8 |
|
CACHE RESISTOR CONFIGURATION |
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|
Size |
RP1/row 1 |
RP1/row 2 |
RP1/row 3 |
|
64KB |
Installed |
Not installed |
Not installed |
|
128KB |
Not installed |
Installed |
Not installed |
|
256KB |
Not installed |
Not installed |
Installed |
|
CPU TYPE CONFIGURATION |
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|
Type |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
SW1/5 |
SW1/6 |
|
80486SX |
Off |
Off |
Off |
Off |
On |
On |
|
80487SX |
Off |
On |
On |
On |
Off |
On |
|
80486DX |
On |
On |
On |
Off |
Off |
On |
|
80486DX2 |
On |
On |
On |
Off |
Off |
On |