SER
486-VLA
Processor |
CX486M6/80486SX/80487SX/80486DX/80486DX2 |
Processor Speed |
25/33/40/50(internal)/50/66(internal)MHz |
Chip Set |
ALI |
Max. Onboard DRAM |
32MB |
Cache |
64/128/256KB |
BIOS |
AMI |
Dimensions |
254mm x 218mm |
I/O Options |
32-bit VESA local bus slots (3) |
NPU Options |
None |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
Speaker |
J1 |
Turbo switch |
J5 |
Power LED & keylock |
J2 |
External battery |
J6 |
Reset switch |
J3 |
32-bit VESA local bus slots |
SL1 - SL3 |
Turbo LED |
J4 |
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 |
JP21 |
JP22 |
JP23 |
JP24 |
64KB |
1 & 2 |
1 & 2 |
Open |
3 & 4 |
128KB |
2 & 3 |
1 & 2 |
Open |
1 & 2, 3 & 4, 5 & 6 |
256KB |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2, 3 & 4, 5 & 6 |
Note: Pins designated should be in the closed position. |
CPU TYPE CONFIGURATION | |||||||
Type |
JP7 |
JP9 |
JP11 |
JP12 |
JP16 |
JP17 |
JP20 |
CX486M6 |
2 & 3 |
2 & 3 |
Open |
Open |
1 & 2 |
Open |
1 & 2 |
80486SX |
1 & 2 |
1 & 2 |
Closed |
Closed |
1 & 2 |
Open |
1 & 2 |
80487SX |
1 & 2 |
1 & 2 |
Closed |
Closed |
2 & 3 |
1 & 2 |
1 & 2 |
80486DX |
1 & 2 |
1 & 2 |
Closed |
Closed |
2 & 3 |
2 & 3 |
1 & 2 |
80486DX2 |
1 & 2 |
1 & 2 |
Closed |
Closed |
2 & 3 |
2 & 3 |
1 & 2 |
Note: Pins designated should be in the closed position. |
CPU SPEED CONFIGURATION | ||||
Speed |
JP6 |
JP10 |
JP25 |
JP26 |
25MHz |
1 & 2 |
1 & 2 |
3 & 4 |
1 & 2 |
33MHz |
1 & 2 |
1 & 2 |
1 & 2, 5 & 6 |
1 & 2 |
40MHz |
2 & 3 |
2 & 3 |
1 & 2, 3 & 4 |
2 & 3 |
50iMHz |
1 & 2 |
1 & 2 |
3 & 4 |
1 & 2 |
50MHz |
2 & 3 |
2 & 3 |
3 & 4 |
2 & 3 |
66iMHz |
1 & 2 |
1 & 2 |
1 & 2, 5 & 6 |
1 & 2 |
Note: Pins designated should be in the closed position. |
VESA WAIT STATE CONFIGURATION | |
Wait states |
JP1 |
0 wait states |
pins 1 & 2 closed |
1 wait state |
pins 2 & 3 closed |
BUS SPEED CONFIGURATION | |
CPU speed |
JP2 |
<= 33MHz |
pins 1 & 2 closed |
> 33MHz |
pins 2 & 3 closed |