FREE COMPUTER TECHNOLOGY, INC.
80486VESA (03-0030X-02)
|
Device Type |
Mainboard |
|
Processor |
80486SX/80486SX2/80487SX/ODP486/80486DX/80486DX2/ 80486DX3/P24T |
|
Processor Speed |
20/25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
SIS 461 |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
32MB |
|
Maximum Video Memory |
1MB |
|
Cache |
64/128/256KB |
|
BIOS |
Unidentified |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (3) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
JP1 |
Reset switch |
JP17 |
|
Power saving |
JP2 |
Turbo LED |
JP18 |
|
Power saving |
JP3 |
Turbo switch |
JP19 |
|
Speaker |
JP15 |
32-bit VESA local bus slots |
SL1 – SL3 |
|
Power LED & keylock |
JP16 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
» |
Factory configured - do not alter |
JP21 |
Unidentified |
|
SIMM 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 |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
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) 16K/32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||
|
Size |
JP11 |
JP12 |
|
64KB |
Open |
Open |
|
128KB |
Pins 1 & 2 closed |
Closed |
|
256KB |
Pins 2 & 3 closed |
Closed |
|
CPU SPEED SELECTION | |||
|
Speed |
JP4 |
JP5 |
JP6 |
|
20MHz |
Closed |
Closed |
Open |
|
25MHz |
Closed |
Open |
Closed |
|
33MHz |
Open |
Closed |
Closed |
|
40MHz |
Closed |
Open |
Open |
|
50iMHz |
Closed |
Open |
Closed |
|
50MHz |
Open |
Closed |
Open |
|
66iMHz |
Open |
Closed |
Closed |
|
CPU TYPE SELECTION | ||
|
Type |
JP7 |
JP8 |
|
80486SX |
Pins 2 & 3 closed |
Open |
|
80486SX2 |
Pins 1 & 2, 3 & 4 closed |
Pins 2 & 3 closed |
|
80487SX |
Pins 1 & 2, 3 & 4 closed |
Pins 2 & 3 closed |
|
ODP486 168-pin |
Pins 1 & 2, 3 & 4 closed |
Pins 1 & 2 closed |
|
ODP486 169-pin |
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 |
|
80486DX3 |
Pins 1 & 2, 3 & 4 closed |
Pins 1 & 2 closed |
|
P24T |
Pins 1 & 2, 3 & 4 closed |
Pins 2 & 3 closed |
|
VL BUS WAIT STATE SELECTION | |
|
Setting |
JP13 |
|
0 |
Open |
|
1 |
Closed |
|
VL BUS SPEED SELECTION | |
|
Speed |
JP14 |
|
<= 33MHz |
Open |
|
>33 MHz |
Closed |