FREE COMPUTER TECHNOLOGY, INC.
80486VISA
Processor |
80486SX/80487SX/80486DX/80486DX2 |
Processor Speed |
20/25/33/50(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 (2) |
NPU Options |
None |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
External battery |
JP1 |
Speaker |
JP17 |
Reset switch |
JP14 |
Power LED & keylock |
JP18 |
Turbo switch |
JP15 |
32-bit VESA local bus slots (2) |
S1 & S2 |
Turbo LED |
JP16 |
USER CONFIGURABLE SETTINGS | |||
Function |
Jumper |
Position | |
» |
Monitor type select monochrome |
JP2 |
Closed |
Monitor type select color |
JP2 |
Open |
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) 1M x 9 |
NONE |
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 |
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
SRAM CONFIGURATION | |||
Size |
Cache |
Location |
TAG |
64KB |
(8) 8K x 8 |
Banks 0 & 1 |
(1) 8K x 8 |
128KB |
(4) 32K x 8 |
Bank 0 |
(1) 8K x 8 |
256KB |
(8) 32K x 8 |
Banks 0 & 1 |
(1) 32K x 8 |
SRAM JUMPER CONFIGURATION | ||
Size |
JP12 |
JP13 |
64KB |
Open |
Open |
128KB |
Closed |
pins 1 & 2 closed |
256KB |
Closed |
pins 2 & 3 closed |
CPU JUMPER CONFIGURATION | ||
CPU |
JP9 |
JP10 |
80486DX2 |
pins 1 & 2 and 3 & 4 closed |
pins 1 & 2 closed |
80486DX |
pins 1 & 2 and 3 & 4 closed |
pins 1 & 2 closed |
ODP486SX |
pins 1 & 2 and 3 & 4 closed |
pins 2 & 3 closed |
80487SX |
pins 1 & 2 and 3 & 4 closed |
pins 2 & 3 closed |
80486SX |
pins 2 & 3 closed |
Open |
CPU SPEED JUMPER CONFIGURATION | |||
Speed |
JP6 |
JP7 |
JP11 |
20MHz |
Closed |
Closed |
pins 1 & 2 closed |
25/50i MHz |
Open |
Closed |
pins 1 & 2 closed |
33/66i MHz |
Closed |
Open |
pins 1 & 2 closed |
40MHz |
Closed |
Closed |
pins 2 & 3 closed |
50MHz |
Open |
Closed |
pins 2 & 3 closed |