UNIDENTIFIED
VL-486
|
Processor |
80486SX/80487SX/ODP487SX/80486DX/80486DX2 |
|
Processor Speed |
25/33/50(internal)/50/66(internal)MHz |
|
Chip Set |
UMC |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
32MB |
|
Maximum Video Memory |
None |
|
Cache |
128/256KB |
|
BIOS |
AMI |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (2) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
BATT |
Turbo switch |
CN4 |
|
Power LED & keylock |
CN1 |
Turbo LED |
CN5 |
|
Speaker |
CN2 |
Auxiliary keyboard connector |
KBD |
|
Reset switch |
CN3 |
32-bit VESA local bus slots |
SL1 & SL2 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
Battery type select internal |
BATT |
Pins 2 & 3 closed | |
|
Battery type select external |
BATT |
Closed | |
|
CMOS memory clear |
BATT |
Pins 3 & 4 closed | |
|
Monitor type select color |
C/M |
Closed | |
|
Monitor type select monochrome |
C/M |
Open | |
|
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 |
|
5MB |
(4) 256K x 9 |
(4) 1M x 9 |
|
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 |
|
Note: The location of banks 0 & 1 is unidentified. | ||
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
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 |
JS3 |
JS4 |
JS5 |
JS6 |
|
128KB |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
256KB |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
CPU SPEED SELECTION | |||||
|
Speed |
JC2 |
JC3 |
JF2 |
JF3 |
JF5 |
|
25MHz |
Open |
2 & 3 |
Closed |
Closed |
Open |
|
33MHz |
Open |
2 & 3 |
Open |
Closed |
Closed |
|
50iMHz |
Open |
2 & 3 |
Closed |
Closed |
Open |
|
50MHz |
Closed |
1 & 2 |
Open |
Open |
Open |
|
66iMHz |
Open |
2 & 3 |
Open |
Closed |
Closed |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU TYPE SELECTION | ||
|
Type |
JC5 |
JC6 |
|
80486SX |
Pins 2 & 3 closed |
Open |
|
80487SX |
Pins 1 & 2, 3 & 4 closed |
Pins 2 & 3 closed |
|
ODP487SX |
Pins 1 & 2, 3 & 4 closed |
Pins 2 & 3 closed |
|
80486DX |
Pins 1 & 2, 3 & 4 closed |
Pins 1 & 2 closed |
|
80486DX2 |
Pins 1 & 2, 3 & 4 closed |
Pins 1 & 2 closed |
|
VL BUS WAIT STATE SELECTION | ||
|
Setting |
J2 | |
|
0 |
Open | |
|
1 |
Closed | |
|
VL BUS SPEED SELECTION | |
|
Speed |
J1 |
|
<= 33MHz |
Open |
|
>33 MHz |
Closed |