ORCHID TECHNOLOGY
SUPERBOARD 486
|
Processor |
80486SX/80487SX/80486DX |
|
Processor Speed |
20/25/33/50MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit external video card |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J10 |
32-bit external video card |
S1 |
|
Power LED & keylock |
J23 |
Reset switch |
SW1 |
|
Speaker |
J24 |
Turbo switch |
SW2 |
|
Turbo LED |
JP12 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Factory configured - do not alter |
JP1 |
Open | |
|
CMOS memory normal operation |
JP2 |
pins 2 & 3 closed | |
|
CMOS memory clear |
JP2 |
pins 1 & 2 closed | |
|
CPU speed select 20/25/33MHz |
JP4 |
pins 2 & 3 closed | |
|
CPU speed select 50MHz |
JP4 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
JPX |
N/A | |
|
Factory configured - do not alter |
JPY |
N/A | |
|
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 |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
TAG (U33) |
TAG (U34) |
|
64KB |
(8) 8K x 8 |
(1) 64K x 1 |
(1) 8K x 8 |
|
256KB |
(8) 32K x 8 |
(1) 64K x 1 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||||
|
Size |
J8 |
J9 |
J10 |
J11 |
|
64KB |
Open |
Open |
Open |
Open |
|
256KB |
Closed |
Closed |
Open |
Closed |
|
CPU JUMPER CONFIGURATION | |||
|
CPU |
JP5 |
JP6 |
JP7 |
|
80486SX |
Open |
pins 2 & 3 closed |
Open |
|
80487SX |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |
|
80486DX |
pins 2 & 3 closed |
pins 1 & 2 closed |
Closed |