INFORMTECH INTERNATIONAL, INC.
IT486EL
|
Processor |
80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
20/25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
UMC |
|
Max. Onboard DRAM |
128MB |
|
Cache |
64/128/256KB |
|
BIOS |
Phoenix |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J4 |
Reset switch |
S9 |
|
Power LED & keylock |
J5 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Monitor type select monochrome |
JP5 |
Open |
|
Monitor type select color |
JP5 |
Closed | |
|
|
Factory configured - do not alter |
JP6 |
Open |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
4MB |
(4) 1M x 9 |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 1M x 9 |
(4) 1M 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 |
|
128MB |
(4) 16M x 9 |
(4) 16M x 9 |
|
CACHE CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
TAG (U52) |
TAG (U53) |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(2) 8K x 8 |
NONE |
|
128KB |
(4) 32K x 8 |
NONE |
(2) 8K x 8 |
NONE |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(2) 8K x 8 |
(2) 8K x 8 |
|
CACHE JUMPER CONFIGURATION | ||||
|
Size |
JP12 |
JP13 |
JP14 |
JP15 |
|
64KB |
Open |
Open |
Open |
Open |
|
128KB |
Open |
Closed |
Open |
Closed |
|
256KB |
Closed |
Closed |
Closed |
Closed |
|
CPU TYPE CONFIGURATION | ||
|
CPU Type |
JP8 |
JP10 |
|
80486SX |
pins 2 & 3 closed |
Open |
|
80487SX |
pins 1, 2, 3, & 4 closed |
pins 1 & 2 closed |
|
80486DX/DX2 |
pins 1, 2, 3, & 4 closed |
pins 2 & 3 closed |
|
CPU SPEED CONFIGURATION | |||||
|
CPU speed |
JP2 |
JP3 |
JP4 |
JP7 |
JP9 |
|
20MHz |
Open |
Closed |
1 & 2 |
Open |
2 & 3 |
|
25MHz |
Open |
Open |
1 & 2 |
Open |
2 & 3 |
|
33MHz |
Closed |
Open |
1 & 2 |
Open |
2 & 3 |
|
40MHz |
Open |
Open |
2 & 3 |
Closed |
2 & 3 |
|
50iMHz |
Open |
Open |
1 & 2 |
Open |
2 & 3 |
|
50MHz |
Closed |
Open |
1 & 2 |
Open |
1 & 2 |
|
66iMHz |
Closed |
Open |
1 & 2 |
Open |
2 & 3 |
|
Note: Pins designated should be in the closed position. | |||||