FREE COMPUTER TECHNOLOGY, INC.
80486VESA
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 | Speaker | JP17 |
Reset switch | JP14 | Power LED & keylock | JP18 |
Turbo switch | JP15 | 32-bit VESA card (2) | S1 & S2 |
Turbo LED | JP16 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select color | JP2 | Open |
Monitor type select monochrome | JP2 | Closed |
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 |
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 |
CPU SPEED CONFIGURATION | |||||
Speed | JP6 | JP7 | JP11 | J19 | JP20 |
20MHz | Closed | Closed | pins 1 & 2 | Open | Open |
25MHz | Open | Closed | pins 1 & 2 | Open | Open |
33MHz | Closed | Open | pins 1 & 2 | Open | Open |
40MHz | Closed | Closed | pins 2 & 3 | Closed | Closed |
50i MHz | Open | Closed | pins 1 & 2 | Open | Open |
50MHz | Open | Closed | pins 2 & 3 | Closed | Closed |
66i MHz | Closed | Open | pins 1 & 2 | Open | Open |
Note:Pins designated should be in the closed postion. |
CPU TYPE CONFIGURATION | ||||
CPU Type | JP9 | JP10 | JP22 | JP23 |
80486SX PQFP | pins 1 & 2, 3 & 4 | pins 1 & 2 | Closed | Open |
80486DX PQFP | pins 1 & 2, 3 & 4 | pins 1 & 2 | Closed | Open |
80486SX PGA | pins 2 & 3 | Open | Open | Closed |
80487SX PGA | pins 1 & 2 and 3 & 4 | pins 2 & 3 | Open | Closed |
80486DX PGA | pins 1 & 2 and 3 & 4 | pins 1 & 2 | Open | Closed |
ODP486SX PGA | pins 1 & 2 and 3 & 4 | pins 2 & 3 | Open | Closed |
80486DX2 PGA | pins 1 & 2 and 3 & 4 | pins 1 & 2 | Open | Closed |
Note:Pins designated should be in the closed postion. |
SRAM CONFIGURATION | |||||
Size | Cache | Location | TAG | JP12 | JP13 |
64KB | (8) 8K x 8 | Banks 0 & 1 | (1) 8K x 8 | Open | Open |
128KB | (4) 32K x 8 | Bank 0 | (1) 8K x 8 | Closed | pins 1 & 2 |
256KB | (8) 32K x 8 | Banks 0 & 1 | (1) 32K x 8 | Closed | pins 2 & 3 |
Note:Pins designated should be in the closed position. |