FREE COMPUTER TECHNOLOGY, INC.
80486EISA (Ver. 2.0)
|
Processor |
80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
20/25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
128MB |
|
Cache |
64/128/256/512KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 365mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Turbo LED |
H1 |
Speaker |
H4 |
|
Reset switch |
H2 |
Power LED & keylock |
H5 |
|
Turbo switch |
H3 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Factory configured - do not alter |
JP1 |
Open | |
|
Factory configured - do not alter |
JP2 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
4MB |
(4) 1M x 9 |
NONE |
|
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 |
|
64MB |
(4) 16M x 9 |
NONE |
|
128MB |
(4) 16M x 9 |
(4) 16M x 9 |
|
CACHE CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
TAG (U26) |
TAG (U31) |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
(1) 16K x 1 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
(1) 16K x 1 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
(1) 16K x 1 |
|
512KB |
(4) 128K x 8 |
NONE |
(1) 32K x 8 |
(1) 64K x 1 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
J4 |
J5 |
J6 |
J7 |
J8 |
|
64KB |
pins 2 & 3 closed |
Open |
Open |
Open |
Open |
|
128KB |
pins 1 & 2 closed |
Closed |
Open |
Open |
Closed |
|
256KB |
pins 2 & 3 closed |
Closed |
Closed |
Open |
Closed |
|
512KB |
pins 1 & 2 closed |
Closed |
Closed |
Closed |
Closed |
|
CPU SPEED CONFIGURATION | ||
|
Speed |
J9 |
J10 |
|
20MHz |
Open |
Open |
|
25MHz |
Open |
Open |
|
33MHz |
Open |
Closed |
|
40MHz |
Closed |
Open |
|
50iMHz |
Open |
Open |
|
50MHz |
Closed |
Closed |
|
66iMHz |
Open |
Closed |
|
CPU TYPE CONFIGURATION | ||
|
Type |
J11 |
J12 |
|
80486SX |
pins 2 & 3 closed |
open |
|
80487SX |
pins 1 & 2 and 3 & 4 closed |
pins 1 & 2 closed |
|
80486DX |
pins 1 & 2 and 3 & 4 closed |
pins 2 & 3 closed |
|
80486DX2 |
pins 1 & 2 and 3 & 4 closed |
pins 2 & 3 closed |