SUPERBOARD 486/VLB Motherboard Settings and Configuration
ORCHID TECHNOLOGY
SUPERBOARD 486/VLB
Processor | 80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
Processor Speed | 20/25/33/50(internal)/50/66(internal)MHz |
Chip Set | OPTI |
Max. Onboard DRAM | 32MB |
Cache | 64/256KB |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | 32-bit VESA local bus slots (2) |
NPU Options | None |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Power LED & keylock | J23 | 32-bit VESA local bus slots | S1 - S2 |
Speaker | J24 | Reset switch | SW1 |
Turbo LED | JP12 | Turbo switch | SW2 |
USER CONFIGURABLE SETTINGS | |||
Function | Jumper | Position | |
» | Monitor type select color | JP1 | Open |
| Monitor type select monochrome | JP1 | Closed |
» | CMOS memory normal operation | JP2 | pins 2 & 3 closed |
| CMOS memory clear | JP2 | pins 1 & 2 closed |
» | Factory configured - do not alter | JP14 | N/A |
» | Factory configured - do not alter (VESA host select 80486) | JP15 | Closed |
» | Factory configured - do not alter (VESA host select 80486) | JP16 | Open |
» | VESA high speed write wait state select one | JP17 | Closed |
| VESA high speed write wait state select zero | JP17 | Open |
» | CPU speed select > 33MHz | JP18 | Closed |
| CPU speed select £ 33MHz | JP18 | Open |
» | Factory configured - do not alter | JP19 | 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 |
32MB | (4) 4M x 9 | (4) 4M x 9 |
CPU TYPE CONFIGURATION | |||||
Type | Oscillator | JP4 | JP5 | JP6 | JP7 |
80486SX-20MHz | 20MHz | 1 & 2 | Open | 2 & 3 | Open |
80486SX-20MHz | 40MHz | 2 & 3 | Open | 2 & 3 | Open |
80486SX-25MHz | 25MHz | 1 & 2 | Open | 2 & 3 | Open |
80486SX-25MHz | 50MHz | 2 & 3 | Open | 2 & 3 | Open |
ODP486SX-25MHz | 25MHz | 1 & 2 | Open | 2 & 3 | Open |
ODP486SX-25MHz | 50MHz | 2 & 3 | Open | 2 & 3 | Open |
80486DX-25MHz | 25MHz | 1 & 2 | 2 & 3 | 1 & 2 | Closed |
80486DX-33MHz | 66MHz | 2 & 3 | 2 & 3 | 1 & 2 | Closed |
80486DX-50MHz | 50MHz | 1 & 2 | 2 & 3 | 1 & 2 | Closed |
80486DX2-50MHz | 25MHz | 1 & 2 | 2 & 3 | 1 & 2 | Closed |
80486DX2-50MHz | 50MHz | 2 & 3 | 2 & 3 | 1 & 2 | Closed |
80486DX2-66MHz | 66MHz | 2 & 3 | 2 & 3 | 1 & 2 | Closed |
Note: Pins designated should be in the closed position. | |||||
CACHE CONFIGURATION | |
Size | Bank 0 |
64KB | (9) 8K x 8 |
256KB | (9) 32K x 8 |
CACHE JUMPER CONFIGURATION | ||||
Size | JP8 | JP9 | JP10 | JP11 |
64KB | Open | Open | Open | Open |
256KB | Closed | Closed | Open | Closed |
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