AST RESEARCH, INC.
ADVANTAGE! 8000 SERIES 486 (COBRA)
(202695-1X1)
|
Processor |
80486SX/486 Overdrive/80486DX/80486DX2/80486DX4/Pentium Overdrive |
|
Processor Speed |
25/33/50(internal)/66(internal)/100(internal)MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
128MB |
|
Cache |
64/256KB |
|
BIOS |
Unidentified |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), 8514 video pass through, VGA port, riser slot |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
PS/2 mouse port |
CN2 |
External battery |
J26 |
|
Serial port |
CN3 |
Speaker |
J27 |
|
Serial port |
CN4 |
Chassis fan power |
J28 |
|
Parallel port |
CN5 |
Front console LED |
J29 |
|
VGA port |
CN6 |
Chassis fan power |
J32 |
|
8514 video pass through connector |
J19 |
IDE interface LED |
J40 |
|
IDE interface |
J22 |
Riser slot |
SL1 |
|
Floppy drive interface |
J24 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
|
Factory configured - do not alter |
E6 |
pins 1 & 2 closed |
|
|
CMOS memory normal operation |
E8 |
Open |
|
CMOS memory clear |
E8 |
Closed | |
|
|
Video memory enabled |
E800 |
Closed |
|
|
Flash BIOS normal operation |
SW1/1 |
Off |
|
Flash BIOS force update at boot |
SW1/1 |
On | |
|
|
Password enabled |
SW1/2 |
On |
|
Password disabled |
SW1/2 |
Off | |
|
|
Monitor type select color |
SW1/3 |
On |
|
Monitor type select monochrome |
SW1/3 |
Off | |
|
|
Setup access enabled |
SW1/4 |
Off |
|
Setup access disabled |
SW1/4 |
On | |
|
|
On board video enabled |
SW1/5 |
On |
|
On board video disabled |
SW1/5 |
Off | |
|
|
Factory configured - do not alter |
SW1/6 |
On |
|
|
Factory configured - do not alter |
SW1/7 |
On |
|
|
Factory configured - do not alter |
SW1/8 |
On |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
4MB |
(1) 1M x 32 |
NONE |
NONE |
NONE |
|
8MB |
(1) 2M x 32 |
NONE |
NONE |
NONE |
|
8MB |
(1) 1M x 32 |
(1) 1M x 32 |
NONE |
NONE |
|
9MB |
(1) 1M x 32 |
(1) 1M x 32 |
(1) 256K x 32 |
NONE |
|
10MB |
(1) 1M x 32 |
(1) 1M x 32 |
(1) 256K x 32 |
(1) 256K x 32 |
|
12MB |
(1) 1M x 32 |
(1) 1M x 32 |
(1) 1M x 32 |
NONE |
|
16MB |
(1) 1M x 32 |
(1) 1M x 32 |
(1) 1M x 32 |
(1) 1M x 32 |
|
16MB |
(1) 4M x 32 |
NONE |
NONE |
NONE |
|
17MB |
(1) 2M x 32 |
(1) 2M x 32 |
(1) 256K x 32 |
NONE |
|
18MB |
(1) 2M x 32 |
(1) 2M x 32 |
(1) 256K x 32 |
(1) 256K x 32 |
|
20MB |
(1) 2M x 32 |
(1) 2M x 32 |
(1) 1M x 32 |
NONE |
|
24MB |
(1) 2M x 32 |
(1) 2M x 32 |
(1) 1M x 32 |
(1) 1M x 32 |
|
24MB |
(1) 2M x 32 |
(1) 2M x 32 |
(1) 2M x 32 |
NONE |
|
32MB |
(1) 2M x 32 |
(1) 2M x 32 |
(1) 2M x 32 |
(1) 2M x 32 |
|
32MB |
(1) 8M x 32 |
NONE |
NONE |
NONE |
|
32MB |
(1) 4M x 32 |
(1) 4M x 32 |
NONE |
NONE |
|
33MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 256K x 32 |
NONE |
|
34MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 256K x 32 |
(1) 256K x 32 |
|
36MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 1M x 32 |
NONE |
|
40MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 1M x 32 |
(1) 1M x 32 |
|
40MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 2M x 32 |
NONE |
|
DRAM CONFIGURATION (CONT) | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
48MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 2M x 32 |
(1) 2M x 32 |
|
48MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 4M x 32 |
NONE |
|
64MB |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 4M x 32 |
(1) 4M x 32 |
|
64MB |
(1) 8M x 32 |
(1) 8M x 32 |
NONE |
NONE |
|
66MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 256K x 32 |
(1) 256K x 32 |
|
68MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 1M x 32 |
NONE |
|
72MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 1M x 32 |
(1) 1M x 32 |
|
72MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 2M x 32 |
NONE |
|
80MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 2M x 32 |
(1) 2M x 32 |
|
80MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 4M x 32 |
NONE |
|
96MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 4M x 32 |
(1) 4M x 32 |
|
96MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 8M x 32 |
NONE |
|
128MB |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 8M x 32 |
(1) 8M x 32 |
|
CACHE CONFIGURATION |
|
Note: The location and chips sizes of 64/256KB cache is unidentified. |
|
CACHE JUMPER CONFIGURATION | |
|
Size |
E5 |
|
64KB |
Open |
|
256KB |
Closed |
|
CPU TYPE CONFIGURATION | ||||
|
Type |
E1 |
E2 |
E3 |
E10 |
|
80486SX (PQFP) |
Open |
pins 2 & 3 closed |
pins 1 & 2 closed |
Closed |
|
ODP486SX |
Open |
pins 2 & 3 closed |
pins 1 & 2 closed |
Closed |
|
80486DX |
Open |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |
|
80486DX2 |
Open |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |
|
80486DX2 (WB) |
Open |
pins 1 & 2 closed |
pins 2 & 3 closed |
Open |
|
80486DX4 |
Open |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |
|
Pentium Overdrive |
Open |
pins 2 & 3 closed |
pins 2 & 3 closed |
Open |
|
Note: E10 is not on all boards. | ||||
|
CPU SPEED CONFIGURATION | ||
|
Speed |
E7 |
E9 |
|
25MHz |
pins 1 & 2 closed |
Closed |
|
33MHz |
pins 2 & 3 closed |
Open |
|
50iMHz |
pins 1 & 2 closed |
Closed |
|
66iMHz |
pins 2 & 3 closed |
Open |
|
100iMHz |
pins 1 & 2 closed |
Closed |
|
CPU SPEED CONFIGURATION (80486DX4 ONLY) | |
|
Voltage |
E4 |
|
2x |
pins 2 & 3 closed |
|
2.5x |
pins 1 & 2 closed |
|
3x |
Open |
|
CPU VOLTAGE CONFIGURATION | ||||||
|
Voltage |
E11 |
E12 |
E13 |
E14 |
E15 |
E16 |
|
3v Cyrix |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
Open |
1 & 2 |
|
3v Intel |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
Closed |
2 & 3 |
|
5v Cyrix |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
Open |
Open |
|
5v Intel |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
Closed |
Open |
|
Note: Pins designated should be in the closed position. The location of E12 is unidentified. | ||||||
|
VIDEO MEMORY CONFIGURATION |
|
1024KB is factory installed and is not configurable. |