ADVANCED INTEGRATED RESEARCH, INC.
486SH REV. 1.1
|
Processor |
80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive |
|
Processor Speed |
20/25/33/40/50(Internal)/50/66(Internal)MHz |
|
Chip Set |
SIS |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (3) |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Turbo switch |
J5 |
|
Power LED & keylock |
J2 |
Turbo LED |
J6 |
|
Speaker |
J3 |
32-bit VESA Local bus slots |
S1, S2, & S3 |
|
Reset switch |
J4 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Monitor type select monochrome, VGA or EGA |
JP7 |
Open | |
|
Monitor type select CGA |
JP7 |
Closed | |
|
CMOS memory normal operation |
JP10 |
pins 1 & 2 closed | |
|
CMOS memory clear |
JP10 |
pins 2 & 3 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 x9 |
NONE |
|
8MB |
(4) 1M x9 |
(4) 1M x9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
20MB |
(4) 1M x9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG/U36 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 32K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
JP1 |
JP2 |
JP3 |
JP20 |
JP21 |
|
64KB |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
|
128KB |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
pins 2 & 3 |
|
256KB |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
|
Note:Pins designated should be in the closed position. | |||||
|
CPU TYPE CONFIGURATION | ||||
|
Type |
JP15 |
JP16 |
JP18 |
JP19 |
|
486SX (PGA) |
pins 2 & 3 closed |
Open |
Open |
Closed |
|
80486SX (PQFP) |
pins 2 & 3 closed |
Open |
Open |
Open |
|
80487SX |
pins 1 & 2 closed |
pins 2 & 3 closed |
Closed |
Closed |
|
80486DX |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |
Closed |
|
ODP486SX |
pins 1 & 2 closed |
pins 2 & 3 closed |
Closed |
Closed |
|
80486DX2 |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |
Closed |
|
Pentium Overdrive |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |
Closed |
|
CPU SPEED CONFIGURATION | ||||
|
Speed |
JP5 |
JP11 |
JP12 |
JP14 |
|
20MHz |
Open |
Open |
Closed |
pins 1 & 2 closed |
|
25MHz |
Closed |
Closed |
Open |
pins 1 & 2 closed |
|
33MHz |
Closed |
Open |
Open |
pins 1 & 2 closed |
|
40MHz |
Open |
Closed |
Open |
pins 2 & 3 closed |
|
50i MHz |
Closed |
Closed |
Open |
pins 1 & 2 closed |
|
50MHz |
Open |
Open |
Open |
pins 2 & 3 closed |
|
66i MHz |
Closed |
Open |
Open |
pins 1 & 2 closed |