MICROMEDIA TECHNOLOGIES, INC.
486-S
|
Processor |
80486SX/80486DX/80486DX2 |
|
Processor Speed |
20/25/33/50(internal)MHz |
|
Chip Set |
SIS |
|
Max. Onboard DRAM |
32MB |
|
Cache |
32/64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
230mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Power LED & keylock |
CN1 |
Turbo LED |
CN4 |
|
Speaker |
CN2 |
Reset switch |
CN5 |
|
Turbo switch |
CN3 |
External battery |
CN6 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
CMOS memory normal operation |
JP10 |
pins 1 & 2 closed |
|
CMOS memory clear |
JP10 |
pins 2 & 3 closed | |
|
» |
Monitor type select color |
JP13 |
Closed |
|
Monitor type select monochrome |
JP13 |
Open | |
|
» |
Power good signal detect from board |
JP17 |
pins 1 & 2 closed |
|
Power good signal detect from power supply |
JP17 |
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 |
|
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 |
|
32KB |
(4) 8K x 8 |
NONE |
(1) 8K x 8 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 32K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||||||||
|
Size |
JP1 |
JP2 |
JP3 |
JP4 |
JP5 |
JP6 |
JP7 |
JP8 |
JP9 |
|
32KB |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
64KB |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
|
128KB |
2 & 3 |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
|
256KB |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
Note:Pins designated should be in the closed position. | |||||||||
|
CPU TYPE CONFIGURATION | |||
|
Type |
JP14 |
JP15 |
JP16 |
|
80486SX |
Open |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
80487SX |
Closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
80486DX |
Closed |
pins 1 & 2 closed |
pins 1 & 2 closed |