BUFFALO PRODUCTS, INC.
486UV AT
|
Processor |
80486SX/80487SX/80486DX |
|
Processor Speed |
20/25/33/50(internal)/50MHz |
|
Chip Set |
UMC |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI/Phoenix |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit system memory card, 32-bit local bus slot |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Turbo switch |
J6 |
|
Power LED & keylock |
J3 |
Turbo LED |
J7 |
|
Speaker |
J4 |
32-bit system memory card |
JME1 |
|
Reset switch |
J5 |
32-bit VESA Local bus slot |
SL1 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Monitor type select color |
JP10 |
Open |
|
Monitor type select monochrome |
JP10 |
Closed | |
|
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 |
|
DRAM CONFIGURATION (WITH MEMORY CARD INSTALLED) | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(4) 256K x 9 |
NONE |
NONE |
NONE |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
NONE |
NONE |
|
3MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
NONE |
|
4MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
NONE |
|
5MB |
(4) 256K x 9 |
(4) 1M x 9 |
NONE |
NONE |
|
6MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 1M x 9 |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
NONE |
|
9MB |
(4) 256K x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
10MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
12MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
|
16MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
NONE |
NONE |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
24MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
36MB |
NONE |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
|
40MB |
NONE |
NONE |
(4) 4M x 9 |
(4) 4M x 9 |
|
48MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
|
64MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
JP13 |
JP14 |
JP16 |
JP17 |
JP18 |
|
64KB |
1 & 2 |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
|
128KB |
2 & 3 |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
|
256KB |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
Note:Pins designated should be in the closed position. | |||||
|
CPU SPEED CONFIGURATION | ||||
|
Speed |
JP1 |
JP2 |
JP3 |
JP8 |
|
20MHz |
Open |
pins 2 & 3 closed |
pins 3 & 4 closed |
See note |
|
25MHz |
Open |
pins 2 & 3 closed |
pins 3 & 4 closed |
See note |
|
33MHz |
Closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
Open |
|
50MHz |
Closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
Open |
|
Note:For 20MHz 486SX/487SX CPU, U14 oscillator frequency can be 20MHz or 40mhz. If U14 oscillator frequency is 20mhz, open JP8. If U14 oscillator frequency is 40 Mhz, close JP8 | ||||
|
VESA CONFIGURATION | |||
|
Type |
JP23 |
JP24 |
JP25 |
|
Weitek 4167 installed |
Open |
Closed |
Open |
|
Local bus installed |
Closed |
Open |
Open |
|
Weitek & Local bus installed |
Open |
Open |
Closed |