DATAEXPERT CORPORATION
OPTI-495XLC 3/486WB CACHE
|
Processor |
80386DX/80486SX/80486DX/80486DX2/Pentium Overdrive |
|
Processor Speed |
25/33/40/50(internal)/50/66(internal)/MHz |
|
Chip Set |
OPTi |
|
Max. Onboard DRAM |
64MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
230mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (2) |
|
NPU Options |
80387DX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Power LED & keylock |
J1 |
Turbo LED |
J5 |
|
Speaker |
J2 |
External battery |
J6 |
|
Turbo switch |
J3 |
32-bit VESA Local bus slot |
S1 |
|
Reset switch |
J4 |
32-bit VESA Local bus slot |
S2 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
CMOS memory normal operation (Internal battery) |
J6 |
pins 2 & 3 closed |
|
CMOS memory clear |
J6 |
pins 3 & 4 closed | |
|
|
Monitor type select color |
JP21 |
Closed |
|
Monitor type select monochrome |
JP21 |
Open | |
|
|
Factory configured - do not alter |
JP23 |
N/A |
|
|
Battery type select - NI-CD recharge |
JP26 |
pins 2 & 3 closed |
|
Battery type select - Lithum discharge |
JP26 |
pins 1 & 2 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 |
|
5MB |
(4) 256K x 9 |
(4) 1M x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
17MB |
(4) 256K x 9 |
(4) 4M x 9 |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 16M x 9 |
NONE |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||||
|
Size |
JP10 |
JP11 |
JP16 |
JP17 |
|
64KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
Open |
Open |
|
128KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |
Open |
|
256KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
Closed |
Closed |
|
80386/80486 CONFIGURATION | |||||
|
Type |
JP14 |
JP15 |
JP20 |
JP25 |
JP30 |
|
80386 |
Open |
Open |
pins 2 & 3 |
pins 1 & 2 |
pins 2 & 3 |
|
80486 |
Closed |
Closed |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
|
Note:Pins designated should be in the closed position. | |||||
|
CPU TYPE CONFIGURATION | |||
|
Type |
JP2 |
JP18 |
JP19 |
|
80486SX (PGA) |
Open |
Open |
pins 2 & 3 closed |
|
80486SX (PQFP) |
Open |
Closed |
pins 2 & 3 closed |
|
80486DX |
pins 1 & 2 closed |
Closed |
pins 1 & 2 closed |
|
80486DX2 |
pins 1 & 2 closed |
Closed |
pins 1 & 2 closed |
|
Pentium Overdrive |
pins 2 & 3 closed |
Closed |
pins 1 & 2 closed |
|
CPU SPEED CONFIGURATION | |||||
|
Speed |
JP6 |
JP7 |
JP8 |
JP9 |
JP22 |
|
80386DX/33MHz |
Open |
Open |
Closed |
pins 1 & 2 |
Open |
|
80486SX/25MHz |
Open |
Open |
Open |
pins 1 & 2 |
Closed |
|
80486SX/33MHz |
Open |
Open |
Closed |
pins 1 & 2 |
Open |
|
80486DX/25MHz |
Open |
Open |
Open |
pins 1 & 2 |
Closed |
|
80486DX/40MHz |
Open |
Closed |
Closed |
pins 1 & 2 |
Open |
|
80486DX/50i MHz |
Open |
Open |
Open |
pins 1 & 2 |
Closed |
|
80486DX/50MHz |
Open |
Closed |
Open |
pins 1 & 2 |
Open |
|
80486DX/66i MHz |
Open |
Open |
Closed |
pins 1 & 2 |
Open |
|
Note:Pins designated should be in the closed position. | |||||