UNIDENTIFIED
MB4D33L
|
Processor |
80386DX/TI486DLC/80486SX/80486DX/80486DX2 |
|
Processor Speed |
20/25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI/Award |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (2) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
JP4 |
Turbo switch |
JP18 |
|
Speaker |
JP15 |
Reset switch |
JP25 |
|
Power LED & keylock |
JP16 |
32-bit VESA local bus slots |
SL1 & SL2 |
|
Turbo LED |
JP17 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
I/O bus speed select CLKIN/4 |
JP5 |
Closed |
|
I/O bus speed select CLKIN/5 |
JP5 |
Open | |
|
|
Monitor type select color |
JP6 |
Closed |
|
Monitor type select monochrome |
JP6 |
Open | |
|
|
CMOS memory normal operation |
JP14 |
pins 1 & 2 closed |
|
CMOS memory clear |
JP14 |
pins 2 & 3 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 |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
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 |
JP1 |
JP2 |
JP3 |
|
64KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
128KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
256KB |
pins 1 & 2 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
CPU TYPE CONFIGURATION | ||||
|
Type |
JP7 |
JP8 |
JP11 |
JP13 |
|
80386DX |
Open |
Open |
pins 2 & 3 closed |
Open |
|
TI486DLC |
Closed |
Closed |
pins 2 & 3 closed |
Open |
|
80486SX |
Open |
Open |
pins 1 & 2 closed |
Closed |
|
80486DX |
Open |
Open |
pins 1 & 2 closed |
Closed |
|
80486DX2 |
Open |
Open |
pins 1 & 2 closed |
Closed |
|
CPU TYPE CONFIGURATION (80486 ONLY) | ||
|
Type |
JP9 |
JP10 |
|
80486SX |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
80486DX |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
80486DX2 |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
CPU SPEED CONFIGURATION (80386 ONLY) | |||||||
|
Speed |
JP12 |
JP19 |
JP20 |
JP21 |
JP22 |
JP23 |
JP24 |
|
25MHz |
1 & 2 |
Open |
2 & 3 |
1 & 2 |
Open |
Closed |
Open |
|
33MHz |
1 & 2 |
Open |
2 & 3 |
1 & 2 |
Open |
Open |
Closed |
|
40MHz |
1 & 2 |
Closed |
2 & 3 |
1 & 2 |
Closed |
Open |
Open |
|
Note: Pins designated should be in the closed position. | |||||||
|
CPU SPEED CONFIGURATION (80486 ONLY) | |||||||
|
Speed |
JP12 |
JP19 |
JP20 |
JP21 |
JP22 |
JP23 |
JP24 |
|
20MHz |
1 & 2 |
Open |
1 & 2 |
1 & 2 |
Open |
Closed |
Closed |
|
25MHz |
1 & 2 |
Open |
1 & 2 |
1 & 2 |
Open |
Closed |
Open |
|
33MHz |
1 & 2 |
Open |
1 & 2 |
1 & 2 |
Open |
Open |
Closed |
|
40MHz |
2 & 3 |
Closed |
2 & 3 |
2 & 3 |
Closed |
Closed |
Closed |
|
50iMHz |
1 & 2 |
Open |
1 & 2 |
1 & 2 |
Open |
Closed |
Open |
|
50MHz |
2 & 3 |
Closed |
2 & 3 |
2 & 3 |
Closed |
Closed |
Open |
|
66iMHz |
1 & 2 |
Open |
1 & 2 |
1 & 2 |
Open |
Open |
Closed |
|
Note: Pins designated should be in the closed position. | |||||||
|
VESA SLOT ID CONFIGURATION | ||
|
Type |
jp26 |
jp27 |
|
80386 serials |
Open |
Closed |
|
80486 serials |
Closed |
Open |