UNIDENTIFIED
VL/ISA-PB486P3
|
Processor |
80486SX/CX486DX/80486DX/80486DX2/80486DX4/P24D/Pentium Overdrive |
|
Processor Speed |
25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
64MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
254mm x 220mm |
|
I/O Options |
32-bit VESA local bus slots (3), green PC connector |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Turbo switch |
CN1 (pins 1 - 2) |
Green PC connector |
JP32 |
|
Turbo LED |
CN1 (pins 3 - 4) |
Reset switch |
S1 |
|
Power LED & keylock |
J2 |
32-bit VESA local bus slots |
SL1 - SL3 |
|
Speaker |
JP18 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
CPU voltage select 5v |
JP1 |
Closed |
|
CPU voltage select 3.3v |
JP1 |
Open | |
|
» |
CMOS memory normal operation |
JP26 |
pins 2 & 3 closed |
|
CMOS memory clear |
JP26 |
pins 1 & 2 closed | |
|
DRAM CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
1MB |
(4) 256K x 9 |
NONE |
NONE |
|
2MB |
NONE |
(1) 512K x 36 |
NONE |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
|
4MB |
NONE |
(1) 1M x 36 |
NONE |
|
4MB |
NONE |
(1) 512K x 36 |
(1) 512K x 36 |
|
6MB |
NONE |
(1) 512K x 36 |
(1) 1M x 36 |
|
8MB |
(4) 1M x 9 |
NONE |
(1) 1M x 36 |
|
8MB |
NONE |
(1) 2M x 36 |
NONE |
|
8MB |
NONE |
(1) 1M x 36 |
(1) 1M x 36 |
|
10MB |
NONE |
(1) 512K x 36 |
(1) 2M x 36 |
|
12MB |
(4) 1M x 9 |
NONE |
(1) 2M x 36 |
|
12MB |
NONE |
(1) 1M x 36 |
(1) 2M x 36 |
|
16MB |
(4) 4M x 9 |
NONE |
NONE |
|
16MB |
NONE |
(1) 2M x 36 |
(1) 2M x 36 |
|
16MB |
NONE |
(1) 4M x 36 |
NONE |
|
20MB |
(4) 1M x 9 |
NONE |
(1) 4M x 36 |
|
20MB |
NONE |
(1) 1M x 36 |
(1) 4M x 36 |
|
32MB |
(4) 4M x 9 |
NONE |
(1) 4M x 36 |
|
32MB |
NONE |
(1) 4M x 36 |
(1) 4M x 36 |
|
32MB |
NONE |
(1) 8M x 36 |
NONE |
|
64MB |
NONE |
(1) 8M x 36 |
(1) 8M x 36 |
|
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 |
JP10 |
JP11 |
JP13 |
|
64KB |
Open |
Open |
pins 2 & 3 closed |
|
128KB |
Open |
Closed |
pins 1 & 2 closed |
|
256KB |
Closed |
Closed |
pins 2 & 3 closed |
|
CPU TYPE CONFIGURATION | |||||
|
Type |
JP3 |
JP4 |
JP5 |
JP6 |
JP7 |
|
80486SX |
Open |
Open |
Open |
1 & 2 |
Open |
|
SL80486SX |
Open |
Open |
Open |
1 & 2 |
Open |
|
CX486DX (1x) |
1 & 2 |
Open |
2 & 3 |
2 & 3 |
Open |
|
CX486DX (2x) |
1 & 2 |
Open |
2 & 3 |
2 & 3 |
Open |
|
80486DX |
1 & 2 |
Open |
2 & 3 |
1 & 2 |
Open |
|
SL80486DX |
1 & 2 |
Open |
2 & 3 |
1 & 2 |
Open |
|
80486DX2 |
1 & 2 |
Open |
2 & 3 |
1 & 2 |
Open |
|
SL80486DX2 |
1 & 2 |
Open |
2 & 3 |
1 & 2 |
Open |
|
80486DX4 (2x) |
1 & 2 |
Open |
2 & 3 |
1 & 2 |
Open |
|
80486DX4 (2.5x) |
1 & 2 |
Open |
2 & 3 |
1 & 2 |
Open |
|
80486DX4 (3x) |
1 & 2 |
Open |
2 & 3 |
1 & 2 |
Open |
|
P24D (WB) |
1 & 2 |
Open |
2 & 3 |
1 & 2 |
1 & 2 |
|
P24D (WT) |
1 & 2 |
Open |
2 & 3 |
1 & 2 |
2 & 3 |
|
Pentium Overdrive |
1 & 2 |
Closed |
2 & 3 |
1 & 2 |
Open |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU TYPE CONFIGURATION (CON’T) | |||||
|
Type |
JP8 |
JP9 |
JP12 |
JP22 |
JP23 |
|
80486SX |
2 & 3 |
Open |
Open |
1 & 2 |
Open |
|
SL80486SX |
2 & 3 |
Open |
Open |
1 & 2 |
Open |
|
CX486DX (1x) |
1 & 2 |
1 & 2 |
Open |
1 & 2 |
Open |
|
CX486DX (2x) |
1 & 2 |
1 & 2 |
Open |
1 & 2 |
Open |
|
80486DX |
1 & 2 |
Open |
Open |
1 & 2 |
Open |
|
SL80486DX |
1 & 2 |
Open |
Open |
1 & 2 |
Open |
|
80486DX2 |
1 & 2 |
Open |
Open |
1 & 2 |
Open |
|
SL80486DX2 |
1 & 2 |
Open |
Open |
1 & 2 |
Open |
|
80486DX4 (2x) |
1 & 2 |
Open |
Open |
1 & 2 |
Open |
|
80486DX4 (2.5x) |
1 & 2 |
Open |
Open |
1 & 2 |
Open |
|
80486DX4 (3x) |
1 & 2 |
Open |
Open |
1 & 2 |
Open |
|
P24D (WB) |
1 & 2 |
2 & 3 |
Closed |
1 & 2 |
Closed |
|
P24D (WT) |
1 & 2 |
2 & 3 |
Closed |
1 & 2 |
Closed |
|
Pentium Overdrive |
1 & 2 |
2 & 3 |
Open |
1 & 2 |
Open |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU TYPE CONFIGURATION (CON’T) | ||||||
|
Type |
JP24 |
JP25 |
JP27 |
JP36 |
JP40 |
JP43 |
|
80486SX |
Open |
Open |
Open |
1 & 2 |
Closed |
Open |
|
SL80486SX |
Closed |
Closed |
Open |
2 & 3 |
Closed |
Open |
|
CX486DX (1x) |
Open |
Open |
1 & 2 |
1 & 2 |
Closed |
Open |
|
CX486DX (2x) |
Open |
Open |
2 & 3 |
1 & 2 |
Closed |
Open |
|
80486DX |
Open |
Open |
Open |
1 & 2 |
Closed |
Open |
|
SL80486DX |
Closed |
Closed |
Open |
2 & 3 |
Closed |
Open |
|
80486DX2 |
Open |
Open |
Open |
1 & 2 |
Closed |
Open |
|
SL80486DX2 |
Closed |
Closed |
Open |
2 & 3 |
Closed |
Open |
|
80486DX4 (2x) |
Closed |
Closed |
Open |
2 & 3 |
Closed |
1 & 2 |
|
80486DX4 (2.5x) |
Closed |
Closed |
Open |
2 & 3 |
Closed |
2 & 3 |
|
80486DX4 (3x) |
Closed |
Closed |
Open |
2 & 3 |
Closed |
Open |
|
P24D (WB) |
Closed |
Closed |
Open |
2 & 3 |
Closed |
Open |
|
P24D (WT) |
Closed |
Closed |
Open |
2 & 3 |
Closed |
Open |
|
Pentium Overdrive |
Open |
Open |
Open |
1 & 2 |
Closed |
Open |
|
Note: Pins designated should be in the closed position. | ||||||
|
CPU SPEED CONFIGURATION | ||
|
Speed |
JP38 |
JP39 |
|
25MHz |
Open |
Closed |
|
33MHz |
Closed |
Open |
|
40MHz |
Open |
Open |
|
50iMHz |
Open |
Closed |
|
50MHz |
Closed |
Closed |
|
66iMHz |
Closed |
Open |
|
VESA WAIT STATE CONFIGURATION | |
|
Wait states |
JP33 |
|
0 wait states |
Open |
|
1 wait state |
Closed |
|
BUS SPEED CONFIGURATION | |
|
CPU speed |
JP34 |
|
<= 33MHz |
Open |
|
> 33MHz |
Closed |