FREE COMPUTER TECHNOLOGY, INC.
80486VESA (03-0027X-01)
|
Device Type |
Mainboard |
|
Processor |
80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
|
Processor Speed |
20/25/33/40/50(internal)/50/66(internal) MHz |
|
Chip Set |
SIS |
|
Max. Onboard DRAM |
32MB |
|
SRAM Cache |
64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit VESA local bus slot (2) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
JP1 |
Turbo LED |
JP16 |
|
Power saving feature |
JP2 |
Speaker |
JP17 |
|
Power saving feature |
JP11 |
Power LED & keylock |
JP18 |
|
Reset switch |
JP14 |
32-bit VESA card |
S1 |
|
Turbo switch |
JP15 |
32-bit VESA card |
S2 |
|
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 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
None |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CPU SPEED CONFIGURATION | |||
|
Speed |
JP6 |
JP7 |
JP8 |
|
20MHz |
Open |
Closed |
Closed |
|
25MHz |
Closed |
Open |
Closed |
|
33MHz |
Closed |
Closed |
Open |
|
40MHz |
Open |
Open |
Closed |
|
50MHz |
Open |
Closed |
Open |
|
CPU TYPE CONFIGURATION | ||||
|
CPU Type |
JP9 |
JP10 |
JP22 |
JP23 |
|
80486SX/DX PQFP |
1 & 2, 3 & 4 |
1 & 2 |
Closed |
Open |
|
80486SX PGA |
2 & 3 |
Open |
Open |
Closed |
|
80486DX/DX2 PGA |
1 & 2, 3 & 4 |
1 & 2 |
Open |
Closed |
|
80487SX/SX2 PGA |
1 & 2, 3 & 4 |
2 & 3 |
Open |
Closed |
|
(2)80486DX2 PGA |
1 & 2, 3 & 4 |
1 & 2 |
Open |
Closed |
|
(2)80487SX PGA |
1 & 2, 3 & 4 |
2 & 3 |
Open |
Closed |
|
Note:Pins designated should be in the closed position. | ||||
|
WAIT STATE SELECTION | |
|
Setting |
JP19 |
|
0 |
Open |
|
1 |
Closed |
|
VL-BUS SPEED SELECTION | |
|
Setting |
JP20 |
|
<= 33MHz |
Open |
|
>33 MHz |
Closed |
|
CACHE SIZE | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
64KB |
(8) 8K x 8 |
(8) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 32 |
None |
(1) 8K x 8 |
|
256KB |
(8) 32K x 8 |
(8) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER | ||
|
Size |
JP12 |
JP13 |
|
64KB |
Open |
Open |
|
128KB |
Closed |
1 & 2 |
|
256KB |
Closed |
2 & 3 |
|
Note: Pins designated should be in the closed position. | ||