ASUS COMPUTER INTERNATIONAL
ISA-486SI
Processor |
80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
Processor Speed |
20/25/33/50(internal)/50/66(internal)MHz |
Chip Set |
SIS |
Max. Onboard DRAM |
32MB |
Cache |
64/128/256KB |
BIOS |
AMI |
Dimensions |
234mm x 221mm |
I/O Options |
None |
NPU Options |
4167 |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
Turbo LED |
CON1 |
Turbo switch |
CON4 |
Power LED & keylock |
CON2 |
Reset switch |
CON5 |
Speaker |
CON3 |
USER CONFIGURABLE SETTINGS | |||
Function |
Jumper |
Position | |
» |
CPU speed select iOSC/1 |
JP1 |
pins 1 & 2 closed |
CPU speed select iOSC/2 |
JP1 |
pins 2 & 3 closed | |
» |
Monitor type select monochrome/other |
JP2 |
pins 2 & 3 closed |
Monitor type select CGA |
JP2 |
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 |
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 |
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 |
CJ1 |
CJ2 |
CJ3 |
64KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
Open |
128KB |
pins 1 & 2 closed |
Open |
Closed |
256KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
Open |
CPU TYPE CONFIGURATION | ||
Type |
CPJ1 |
CPJ2 |
80486SX |
Open |
pins 2 & 3 closed |
80487SX |
pins 2 & 3 closed |
pins 1 & 2 and 3 & 4 closed |
ODP486SX |
pins 2 & 3 closed |
pins 1 & 2 and 3 & 4 closed |
80486DX |
pins 1 & 2 closed |
pins 1 & 2 and 3 & 4 closed |
80486DX2 |
pins 1 & 2 closed |
pins 1 & 2 and 3 & 4 closed |