UNIDENTIFIED
486UL (VER. 2)
|
Processor |
80486SX/80487SX/ODP486/80486DX/80486DX2 |
|
Processor Speed |
25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
UMC |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
64MB |
|
Maximum Video Memory |
None |
|
Cache |
64/128/256KB |
|
BIOS |
AMI/Award |
|
Dimensions |
250mm x 220mm |
|
I/O Options |
32-bit VESA local bus slots (3) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Power LED & keylock |
J5 |
|
Turbo LED |
J2 |
Reset switch |
J6 |
|
Turbo switch |
J3 |
32-bit VESA local bus slots |
SL1 - SL3 |
|
Speaker |
J4 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
Turbo switch enabled/controlled by kbd CTRL, ALT - (low), CTRL, ALT + (high) |
J3 |
Open | |
|
Turbo switch disabled |
J3 |
Closed | |
|
|
Any VESA card installed |
JP9 |
1 & 2 |
|
Weitek Power 9000 VESA card installed |
JP9 |
2 & 3 | |
|
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) 1M x 9 |
(4) 256K x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
None |
|
17MB |
(4) 4M x 9 |
(4) 256K x 9 |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 16M x 9 |
None |
|
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 RESISTOR CONFIGURATION | |||
|
Size |
RN6 |
RN7 |
RN8 |
|
64KB |
Installed |
Not installed |
Not installed |
|
128KB |
Not installed |
Installed |
Not installed |
|
256KB |
Not installed |
Not installed |
Installed |
|
CPU SPEED SELECTION | ||||
|
Speed |
J22 |
JP3 |
JP4 |
JP5 |
|
25MHz |
Pins 1 & 2 closed |
Closed |
Open |
Open |
|
33MHz |
Pins 1 & 2 closed |
Closed |
Closed |
Closed |
|
40MHz |
Pins 1 & 2 closed |
Closed |
Closed |
Open |
|
50iMHz |
Pins 1 & 2 closed |
Closed |
Open |
Open |
|
50MHz |
Pins 2 & 3 closed |
Open |
Open |
Closed |
|
66iMHz |
Pins 1 & 2 closed |
Closed |
Closed |
Closed |
|
CPU TYPE SELECTION | ||
|
Type |
JP1 |
JP2 |
|
80486SX |
Pins 2 & 3 closed |
Open |
|
80487SX |
Pins 1 & 2, 3 & 4 closed |
Pins 2 & 3 closed |
|
ODP486 |
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 |
JP13 | |
|
0 |
Open | |
|
1 |
Closed | |
|
VL-BUS SPEED SELECTION | |
|
CPU speed |
JP12 |
|
<= 33MHz |
Open |
|
>33 MHz |
Closed |